./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17c1b3adab900925d0968acf284c9fae9bc7d0ec39197e53dc7bd6b93c5a8558 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:44:34,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:44:34,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:44:34,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:44:34,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:44:34,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:44:34,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:44:34,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:44:34,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:44:34,465 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:44:34,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:44:34,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:44:34,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:44:34,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:44:34,466 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:44:34,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:44:34,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:44:34,469 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:44:34,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:44:34,470 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:44:34,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:44:34,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:44:34,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:44:34,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:44:34,471 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:44:34,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:44:34,471 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:44:34,472 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:44:34,472 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:44:34,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:44:34,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:44:34,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:44:34,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:34,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:44:34,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:44:34,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:44:34,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:44:34,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:34,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:44:34,475 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:44:34,475 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:44:34,475 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:44:34,475 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:44:34,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:44:34,475 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:44:34,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:44:34,476 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:44:34,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:44:34,476 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_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c1b3adab900925d0968acf284c9fae9bc7d0ec39197e53dc7bd6b93c5a8558 [2024-11-24 00:44:34,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:44:34,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:44:34,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:44:34,885 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:44:34,885 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:44:34,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-24 00:44:38,433 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/data/f601e2a92/ed9ffd6711f24b8d88c66f331467baaa/FLAGc1d3c99c8 [2024-11-24 00:44:38,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:44:38,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-24 00:44:38,777 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/data/f601e2a92/ed9ffd6711f24b8d88c66f331467baaa/FLAGc1d3c99c8 [2024-11-24 00:44:39,025 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/data/f601e2a92/ed9ffd6711f24b8d88c66f331467baaa [2024-11-24 00:44:39,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:44:39,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:44:39,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:44:39,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:44:39,035 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:44:39,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc410c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39, skipping insertion in model container [2024-11-24 00:44:39,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,062 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:44:39,270 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_87280b91-2441-4146-9525-c2d4caacd1f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118] [2024-11-24 00:44:39,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:44:39,304 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:44:39,337 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_87280b91-2441-4146-9525-c2d4caacd1f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118] [2024-11-24 00:44:39,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:44:39,376 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:44:39,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39 WrapperNode [2024-11-24 00:44:39,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:44:39,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:44:39,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:44:39,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:44:39,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,424 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 290 [2024-11-24 00:44:39,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:44:39,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:44:39,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:44:39,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:44:39,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,454 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]. [2024-11-24 00:44:39,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,460 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:44:39,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:44:39,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:44:39,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:44:39,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (1/1) ... [2024-11-24 00:44:39,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:39,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:39,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:44:39,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:44:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:44:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:44:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:44:39,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:44:39,696 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:44:39,698 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:44:40,302 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-24 00:44:40,302 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:44:40,319 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:44:40,319 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:44:40,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:40 BoogieIcfgContainer [2024-11-24 00:44:40,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:44:40,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:44:40,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:44:40,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:44:40,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:44:39" (1/3) ... [2024-11-24 00:44:40,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f63ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:44:40, skipping insertion in model container [2024-11-24 00:44:40,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:39" (2/3) ... [2024-11-24 00:44:40,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f63ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:44:40, skipping insertion in model container [2024-11-24 00:44:40,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:40" (3/3) ... [2024-11-24 00:44:40,334 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-24 00:44:40,352 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:44:40,355 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 64 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 00:44:40,437 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:44:40,456 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;@5f5c2810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:44:40,456 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:44:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 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) [2024-11-24 00:44:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 00:44:40,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:40,471 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] [2024-11-24 00:44:40,471 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:40,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:40,479 INFO L85 PathProgramCache]: Analyzing trace with hash -976687966, now seen corresponding path program 1 times [2024-11-24 00:44:40,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:40,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625039052] [2024-11-24 00:44:40,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:40,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:40,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:40,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625039052] [2024-11-24 00:44:40,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625039052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:40,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:40,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:44:40,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968888762] [2024-11-24 00:44:40,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:40,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:44:40,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:40,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:44:40,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:44:40,983 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-24 00:44:41,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:41,072 INFO L93 Difference]: Finished difference Result 146 states and 230 transitions. [2024-11-24 00:44:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:44:41,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2024-11-24 00:44:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:41,089 INFO L225 Difference]: With dead ends: 146 [2024-11-24 00:44:41,093 INFO L226 Difference]: Without dead ends: 95 [2024-11-24 00:44:41,097 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 [2024-11-24 00:44:41,101 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:41,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 211 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-24 00:44:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-11-24 00:44:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4782608695652173) internal successors, (136), 92 states have internal predecessors, (136), 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) [2024-11-24 00:44:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2024-11-24 00:44:41,141 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 37 [2024-11-24 00:44:41,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:41,142 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2024-11-24 00:44:41,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-24 00:44:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2024-11-24 00:44:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:44:41,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:41,144 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] [2024-11-24 00:44:41,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:44:41,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:41,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:41,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1572742836, now seen corresponding path program 1 times [2024-11-24 00:44:41,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:41,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745985569] [2024-11-24 00:44:41,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:41,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:41,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:41,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745985569] [2024-11-24 00:44:41,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745985569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:41,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:41,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:44:41,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954892130] [2024-11-24 00:44:41,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:41,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:44:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:41,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:44:41,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:44:41,365 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-24 00:44:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:41,406 INFO L93 Difference]: Finished difference Result 225 states and 344 transitions. [2024-11-24 00:44:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:44:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2024-11-24 00:44:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:41,413 INFO L225 Difference]: With dead ends: 225 [2024-11-24 00:44:41,413 INFO L226 Difference]: Without dead ends: 151 [2024-11-24 00:44:41,414 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 [2024-11-24 00:44:41,417 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:41,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-24 00:44:41,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2024-11-24 00:44:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.5135135135135136) internal successors, (224), 148 states have internal predecessors, (224), 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) [2024-11-24 00:44:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2024-11-24 00:44:41,445 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 38 [2024-11-24 00:44:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:41,445 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2024-11-24 00:44:41,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-24 00:44:41,446 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2024-11-24 00:44:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 00:44:41,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:41,447 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] [2024-11-24 00:44:41,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:44:41,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:41,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1624580866, now seen corresponding path program 1 times [2024-11-24 00:44:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:41,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070504941] [2024-11-24 00:44:41,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:41,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:41,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070504941] [2024-11-24 00:44:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070504941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:41,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:44:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050894845] [2024-11-24 00:44:41,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:41,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:44:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:41,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:44:41,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:44:41,810 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-24 00:44:42,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:42,088 INFO L93 Difference]: Finished difference Result 929 states and 1454 transitions. [2024-11-24 00:44:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:44:42,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2024-11-24 00:44:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:42,104 INFO L225 Difference]: With dead ends: 929 [2024-11-24 00:44:42,105 INFO L226 Difference]: Without dead ends: 799 [2024-11-24 00:44:42,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:44:42,107 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 410 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:42,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 575 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:44:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-11-24 00:44:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 277. [2024-11-24 00:44:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.5217391304347827) internal successors, (420), 276 states have internal predecessors, (420), 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) [2024-11-24 00:44:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 420 transitions. [2024-11-24 00:44:42,152 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 420 transitions. Word has length 39 [2024-11-24 00:44:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:42,153 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 420 transitions. [2024-11-24 00:44:42,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-24 00:44:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 420 transitions. [2024-11-24 00:44:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-24 00:44:42,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:42,154 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] [2024-11-24 00:44:42,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:44:42,155 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:42,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1224060410, now seen corresponding path program 1 times [2024-11-24 00:44:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981181622] [2024-11-24 00:44:42,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:42,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:42,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981181622] [2024-11-24 00:44:42,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981181622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:42,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:42,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:44:42,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135835469] [2024-11-24 00:44:42,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:42,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:44:42,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:42,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:44:42,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:44:42,334 INFO L87 Difference]: Start difference. First operand 277 states and 420 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-24 00:44:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:42,379 INFO L93 Difference]: Finished difference Result 749 states and 1146 transitions. [2024-11-24 00:44:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:44:42,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-11-24 00:44:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:42,383 INFO L225 Difference]: With dead ends: 749 [2024-11-24 00:44:42,383 INFO L226 Difference]: Without dead ends: 491 [2024-11-24 00:44:42,384 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 [2024-11-24 00:44:42,385 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:42,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 141 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:42,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-24 00:44:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 481. [2024-11-24 00:44:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4916666666666667) internal successors, (716), 480 states have internal predecessors, (716), 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) [2024-11-24 00:44:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 716 transitions. [2024-11-24 00:44:42,412 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 716 transitions. Word has length 41 [2024-11-24 00:44:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:42,413 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 716 transitions. [2024-11-24 00:44:42,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-24 00:44:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 716 transitions. [2024-11-24 00:44:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-24 00:44:42,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:42,414 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] [2024-11-24 00:44:42,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:44:42,415 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:42,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1245063065, now seen corresponding path program 1 times [2024-11-24 00:44:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:42,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763108393] [2024-11-24 00:44:42,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:42,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:42,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763108393] [2024-11-24 00:44:42,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763108393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:42,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:42,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:44:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580152766] [2024-11-24 00:44:42,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:42,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:44:42,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:42,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:44:42,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:44:42,851 INFO L87 Difference]: Start difference. First operand 481 states and 716 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-24 00:44:43,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:43,003 INFO L93 Difference]: Finished difference Result 945 states and 1414 transitions. [2024-11-24 00:44:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:44:43,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2024-11-24 00:44:43,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:43,008 INFO L225 Difference]: With dead ends: 945 [2024-11-24 00:44:43,008 INFO L226 Difference]: Without dead ends: 483 [2024-11-24 00:44:43,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:44:43,012 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 46 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:43,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 266 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:44:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-24 00:44:43,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2024-11-24 00:44:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.475) internal successors, (708), 480 states have internal predecessors, (708), 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) [2024-11-24 00:44:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 708 transitions. [2024-11-24 00:44:43,057 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 708 transitions. Word has length 41 [2024-11-24 00:44:43,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:43,057 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 708 transitions. [2024-11-24 00:44:43,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-24 00:44:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 708 transitions. [2024-11-24 00:44:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-24 00:44:43,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:43,059 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] [2024-11-24 00:44:43,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:44:43,064 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:43,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash -59660072, now seen corresponding path program 1 times [2024-11-24 00:44:43,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:43,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493747030] [2024-11-24 00:44:43,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:43,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:43,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493747030] [2024-11-24 00:44:43,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493747030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:43,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:43,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:44:43,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674396375] [2024-11-24 00:44:43,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:43,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:44:43,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:43,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:44:43,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:44:43,221 INFO L87 Difference]: Start difference. First operand 481 states and 708 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-24 00:44:43,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:43,325 INFO L93 Difference]: Finished difference Result 943 states and 1397 transitions. [2024-11-24 00:44:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:44:43,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2024-11-24 00:44:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:43,328 INFO L225 Difference]: With dead ends: 943 [2024-11-24 00:44:43,329 INFO L226 Difference]: Without dead ends: 481 [2024-11-24 00:44:43,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:44:43,330 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 222 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:43,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 56 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:44:43,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-24 00:44:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2024-11-24 00:44:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4416666666666667) internal successors, (692), 480 states have internal predecessors, (692), 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) [2024-11-24 00:44:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 692 transitions. [2024-11-24 00:44:43,348 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 692 transitions. Word has length 42 [2024-11-24 00:44:43,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:43,348 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 692 transitions. [2024-11-24 00:44:43,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-24 00:44:43,349 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 692 transitions. [2024-11-24 00:44:43,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-24 00:44:43,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:43,350 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] [2024-11-24 00:44:43,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:44:43,351 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:43,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 68425235, now seen corresponding path program 1 times [2024-11-24 00:44:43,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:43,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783236152] [2024-11-24 00:44:43,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:43,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:43,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:43,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783236152] [2024-11-24 00:44:43,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783236152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:43,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:43,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:44:43,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468127354] [2024-11-24 00:44:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:43,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:44:43,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:43,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:44:43,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:44:43,520 INFO L87 Difference]: Start difference. First operand 481 states and 692 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-24 00:44:43,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:43,631 INFO L93 Difference]: Finished difference Result 943 states and 1365 transitions. [2024-11-24 00:44:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:44:43,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2024-11-24 00:44:43,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:43,634 INFO L225 Difference]: With dead ends: 943 [2024-11-24 00:44:43,634 INFO L226 Difference]: Without dead ends: 481 [2024-11-24 00:44:43,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:44:43,638 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 206 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:43,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 64 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:44:43,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-24 00:44:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2024-11-24 00:44:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.425) internal successors, (684), 480 states have internal predecessors, (684), 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) [2024-11-24 00:44:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 684 transitions. [2024-11-24 00:44:43,658 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 684 transitions. Word has length 42 [2024-11-24 00:44:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:43,658 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 684 transitions. [2024-11-24 00:44:43,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-24 00:44:43,659 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 684 transitions. [2024-11-24 00:44:43,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-24 00:44:43,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:43,660 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] [2024-11-24 00:44:43,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:44:43,660 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:43,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:43,661 INFO L85 PathProgramCache]: Analyzing trace with hash 933957624, now seen corresponding path program 1 times [2024-11-24 00:44:43,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:43,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308803778] [2024-11-24 00:44:43,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:43,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:44,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308803778] [2024-11-24 00:44:44,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308803778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:44,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:44,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:44:44,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557231919] [2024-11-24 00:44:44,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:44,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:44:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:44,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:44:44,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:44:44,087 INFO L87 Difference]: Start difference. First operand 481 states and 684 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2024-11-24 00:44:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:44,129 INFO L93 Difference]: Finished difference Result 499 states and 709 transitions. [2024-11-24 00:44:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:44:44,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2024-11-24 00:44:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:44,132 INFO L225 Difference]: With dead ends: 499 [2024-11-24 00:44:44,133 INFO L226 Difference]: Without dead ends: 497 [2024-11-24 00:44:44,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:44:44,135 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:44,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 309 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-11-24 00:44:44,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2024-11-24 00:44:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.403225806451613) internal successors, (696), 496 states have internal predecessors, (696), 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) [2024-11-24 00:44:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 696 transitions. [2024-11-24 00:44:44,155 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 696 transitions. Word has length 42 [2024-11-24 00:44:44,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:44,156 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 696 transitions. [2024-11-24 00:44:44,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2024-11-24 00:44:44,156 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 696 transitions. [2024-11-24 00:44:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-24 00:44:44,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:44,161 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] [2024-11-24 00:44:44,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:44:44,161 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:44,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash 883353381, now seen corresponding path program 1 times [2024-11-24 00:44:44,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:44,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677066599] [2024-11-24 00:44:44,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:44,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:44,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:44,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677066599] [2024-11-24 00:44:44,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677066599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:44,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:44,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:44:44,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172451995] [2024-11-24 00:44:44,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:44,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:44:44,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:44,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:44:44,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:44:44,259 INFO L87 Difference]: Start difference. First operand 497 states and 696 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-24 00:44:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:44,290 INFO L93 Difference]: Finished difference Result 968 states and 1382 transitions. [2024-11-24 00:44:44,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:44:44,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2024-11-24 00:44:44,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:44,294 INFO L225 Difference]: With dead ends: 968 [2024-11-24 00:44:44,294 INFO L226 Difference]: Without dead ends: 693 [2024-11-24 00:44:44,295 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 [2024-11-24 00:44:44,296 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 51 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:44,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-24 00:44:44,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2024-11-24 00:44:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 1.4057971014492754) internal successors, (970), 690 states have internal predecessors, (970), 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) [2024-11-24 00:44:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 970 transitions. [2024-11-24 00:44:44,325 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 970 transitions. Word has length 42 [2024-11-24 00:44:44,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:44,325 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 970 transitions. [2024-11-24 00:44:44,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-24 00:44:44,326 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 970 transitions. [2024-11-24 00:44:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 00:44:44,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:44,327 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:44:44,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:44:44,328 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:44,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:44,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1515661308, now seen corresponding path program 1 times [2024-11-24 00:44:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:44,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337948355] [2024-11-24 00:44:44,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:44,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:44:44,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:44,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337948355] [2024-11-24 00:44:44,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337948355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:44,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:44,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:44:44,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465247698] [2024-11-24 00:44:44,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:44,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:44:44,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:44,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:44:44,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:44:44,548 INFO L87 Difference]: Start difference. First operand 691 states and 970 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-24 00:44:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:44,680 INFO L93 Difference]: Finished difference Result 2835 states and 4000 transitions. [2024-11-24 00:44:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:44:44,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 61 [2024-11-24 00:44:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:44,691 INFO L225 Difference]: With dead ends: 2835 [2024-11-24 00:44:44,691 INFO L226 Difference]: Without dead ends: 2165 [2024-11-24 00:44:44,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:44:44,697 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 225 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:44,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 334 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:44:44,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2024-11-24 00:44:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1359. [2024-11-24 00:44:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1358 states have (on average 1.4035346097201766) internal successors, (1906), 1358 states have internal predecessors, (1906), 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) [2024-11-24 00:44:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1906 transitions. [2024-11-24 00:44:44,762 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1906 transitions. Word has length 61 [2024-11-24 00:44:44,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:44,762 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1906 transitions. [2024-11-24 00:44:44,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-24 00:44:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1906 transitions. [2024-11-24 00:44:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 00:44:44,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:44,764 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:44:44,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:44:44,765 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:44,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:44,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1625359882, now seen corresponding path program 1 times [2024-11-24 00:44:44,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:44,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816120787] [2024-11-24 00:44:44,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:44,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-24 00:44:44,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816120787] [2024-11-24 00:44:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816120787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:44,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:44:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485600560] [2024-11-24 00:44:44,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:44,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:44:44,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:44,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:44:44,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:44:44,969 INFO L87 Difference]: Start difference. First operand 1359 states and 1906 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-24 00:44:45,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:45,096 INFO L93 Difference]: Finished difference Result 3503 states and 4936 transitions. [2024-11-24 00:44:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:44:45,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 61 [2024-11-24 00:44:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:45,109 INFO L225 Difference]: With dead ends: 3503 [2024-11-24 00:44:45,110 INFO L226 Difference]: Without dead ends: 2833 [2024-11-24 00:44:45,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:44:45,113 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 219 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:45,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 366 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:44:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2024-11-24 00:44:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2363. [2024-11-24 00:44:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2362 states have (on average 1.397121083827265) internal successors, (3300), 2362 states have internal predecessors, (3300), 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) [2024-11-24 00:44:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3300 transitions. [2024-11-24 00:44:45,208 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3300 transitions. Word has length 61 [2024-11-24 00:44:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:45,208 INFO L471 AbstractCegarLoop]: Abstraction has 2363 states and 3300 transitions. [2024-11-24 00:44:45,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-24 00:44:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3300 transitions. [2024-11-24 00:44:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 00:44:45,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:45,210 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:44:45,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:44:45,210 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:45,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:45,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2114297975, now seen corresponding path program 1 times [2024-11-24 00:44:45,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:45,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857865792] [2024-11-24 00:44:45,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:45,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:44:45,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:45,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857865792] [2024-11-24 00:44:45,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857865792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:45,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:45,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:44:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549368125] [2024-11-24 00:44:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:45,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:44:45,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:45,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:44:45,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:44:45,402 INFO L87 Difference]: Start difference. First operand 2363 states and 3300 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-11-24 00:44:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:45,530 INFO L93 Difference]: Finished difference Result 3763 states and 5320 transitions. [2024-11-24 00:44:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:44:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 62 [2024-11-24 00:44:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:45,545 INFO L225 Difference]: With dead ends: 3763 [2024-11-24 00:44:45,545 INFO L226 Difference]: Without dead ends: 3297 [2024-11-24 00:44:45,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:44:45,548 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 211 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:45,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 343 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:44:45,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2024-11-24 00:44:45,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 2827. [2024-11-24 00:44:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2826 states have (on average 1.402689313517339) internal successors, (3964), 2826 states have internal predecessors, (3964), 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) [2024-11-24 00:44:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3964 transitions. [2024-11-24 00:44:45,669 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3964 transitions. Word has length 62 [2024-11-24 00:44:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:45,669 INFO L471 AbstractCegarLoop]: Abstraction has 2827 states and 3964 transitions. [2024-11-24 00:44:45,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-11-24 00:44:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3964 transitions. [2024-11-24 00:44:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 00:44:45,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:45,671 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:44:45,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:44:45,671 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:45,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash -344216809, now seen corresponding path program 1 times [2024-11-24 00:44:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:45,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53458745] [2024-11-24 00:44:45,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:45,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53458745] [2024-11-24 00:44:45,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53458745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:45,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:45,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:44:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611230093] [2024-11-24 00:44:45,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:45,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:44:45,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:45,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:44:45,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:44:45,799 INFO L87 Difference]: Start difference. First operand 2827 states and 3964 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-24 00:44:45,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:45,852 INFO L93 Difference]: Finished difference Result 4945 states and 6985 transitions. [2024-11-24 00:44:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:44:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-11-24 00:44:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:45,861 INFO L225 Difference]: With dead ends: 4945 [2024-11-24 00:44:45,861 INFO L226 Difference]: Without dead ends: 2139 [2024-11-24 00:44:45,864 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 [2024-11-24 00:44:45,865 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 39 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:45,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-11-24 00:44:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2024-11-24 00:44:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2136 states have (on average 1.4063670411985019) internal successors, (3004), 2136 states have internal predecessors, (3004), 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) [2024-11-24 00:44:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3004 transitions. [2024-11-24 00:44:45,930 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3004 transitions. Word has length 63 [2024-11-24 00:44:45,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:45,930 INFO L471 AbstractCegarLoop]: Abstraction has 2137 states and 3004 transitions. [2024-11-24 00:44:45,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-24 00:44:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3004 transitions. [2024-11-24 00:44:45,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 00:44:45,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:45,933 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:44:45,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:44:45,934 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:45,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2058333971, now seen corresponding path program 1 times [2024-11-24 00:44:45,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:45,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581658812] [2024-11-24 00:44:45,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:45,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:46,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:46,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581658812] [2024-11-24 00:44:46,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581658812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:44:46,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431222203] [2024-11-24 00:44:46,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:46,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:44:46,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:46,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:44:46,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:44:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:46,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:44:46,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:47,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:44:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:48,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431222203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:44:48,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:44:48,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-24 00:44:48,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074740000] [2024-11-24 00:44:48,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:44:48,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:44:48,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:48,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:44:48,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:44:48,765 INFO L87 Difference]: Start difference. First operand 2137 states and 3004 transitions. Second operand has 25 states, 25 states have (on average 6.48) internal successors, (162), 24 states have internal predecessors, (162), 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) [2024-11-24 00:44:54,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:54,205 INFO L93 Difference]: Finished difference Result 17188 states and 24016 transitions. [2024-11-24 00:44:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-24 00:44:54,206 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 24 states have internal predecessors, (162), 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 63 [2024-11-24 00:44:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:54,269 INFO L225 Difference]: With dead ends: 17188 [2024-11-24 00:44:54,269 INFO L226 Difference]: Without dead ends: 15086 [2024-11-24 00:44:54,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2506 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1583, Invalid=7537, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 00:44:54,279 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 2812 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:54,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2812 Valid, 1030 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 00:44:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15086 states. [2024-11-24 00:44:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15086 to 10642. [2024-11-24 00:44:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10642 states, 10641 states have (on average 1.3895310591109857) internal successors, (14786), 10641 states have internal predecessors, (14786), 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) [2024-11-24 00:44:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10642 states to 10642 states and 14786 transitions. [2024-11-24 00:44:54,655 INFO L78 Accepts]: Start accepts. Automaton has 10642 states and 14786 transitions. Word has length 63 [2024-11-24 00:44:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:54,656 INFO L471 AbstractCegarLoop]: Abstraction has 10642 states and 14786 transitions. [2024-11-24 00:44:54,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 24 states have internal predecessors, (162), 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) [2024-11-24 00:44:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 10642 states and 14786 transitions. [2024-11-24 00:44:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:44:54,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:54,658 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:44:54,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:44:54,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 00:44:54,859 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:54,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2139757523, now seen corresponding path program 1 times [2024-11-24 00:44:54,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:54,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140302154] [2024-11-24 00:44:54,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:54,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:55,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:55,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140302154] [2024-11-24 00:44:55,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140302154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:44:55,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424300848] [2024-11-24 00:44:55,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:55,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:44:55,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:55,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:44:55,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:44:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:55,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-24 00:44:55,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:57,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:44:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:59,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424300848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:44:59,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:44:59,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 17] total 36 [2024-11-24 00:44:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464409253] [2024-11-24 00:44:59,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:44:59,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-24 00:44:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:59,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-24 00:44:59,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 00:44:59,778 INFO L87 Difference]: Start difference. First operand 10642 states and 14786 transitions. Second operand has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 states have internal predecessors, (175), 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) [2024-11-24 00:45:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:14,840 INFO L93 Difference]: Finished difference Result 86584 states and 119048 transitions. [2024-11-24 00:45:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2024-11-24 00:45:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 states have internal predecessors, (175), 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 [2024-11-24 00:45:14,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:15,110 INFO L225 Difference]: With dead ends: 86584 [2024-11-24 00:45:15,111 INFO L226 Difference]: Without dead ends: 76034 [2024-11-24 00:45:15,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21157 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=8899, Invalid=39281, Unknown=0, NotChecked=0, Total=48180 [2024-11-24 00:45:15,144 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 6423 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6423 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:15,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6423 Valid, 1294 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-24 00:45:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76034 states. [2024-11-24 00:45:16,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76034 to 44430. [2024-11-24 00:45:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44430 states, 44429 states have (on average 1.3846361610659703) internal successors, (61518), 44429 states have internal predecessors, (61518), 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) [2024-11-24 00:45:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44430 states to 44430 states and 61518 transitions. [2024-11-24 00:45:16,561 INFO L78 Accepts]: Start accepts. Automaton has 44430 states and 61518 transitions. Word has length 64 [2024-11-24 00:45:16,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:16,562 INFO L471 AbstractCegarLoop]: Abstraction has 44430 states and 61518 transitions. [2024-11-24 00:45:16,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 states have internal predecessors, (175), 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) [2024-11-24 00:45:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand 44430 states and 61518 transitions. [2024-11-24 00:45:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 00:45:16,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:16,566 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:45:16,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:45:16,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 00:45:16,768 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:16,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1508040122, now seen corresponding path program 1 times [2024-11-24 00:45:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7789460] [2024-11-24 00:45:16,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:16,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:16,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7789460] [2024-11-24 00:45:16,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7789460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:16,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:16,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421673305] [2024-11-24 00:45:16,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:16,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:16,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:16,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:16,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:16,897 INFO L87 Difference]: Start difference. First operand 44430 states and 61518 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-24 00:45:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:17,246 INFO L93 Difference]: Finished difference Result 69436 states and 96260 transitions. [2024-11-24 00:45:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:17,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2024-11-24 00:45:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:17,295 INFO L225 Difference]: With dead ends: 69436 [2024-11-24 00:45:17,295 INFO L226 Difference]: Without dead ends: 25154 [2024-11-24 00:45:17,330 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 [2024-11-24 00:45:17,331 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 30 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:17,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 159 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25154 states. [2024-11-24 00:45:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25154 to 25152. [2024-11-24 00:45:18,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25152 states, 25151 states have (on average 1.3616953600254462) internal successors, (34248), 25151 states have internal predecessors, (34248), 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) [2024-11-24 00:45:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25152 states to 25152 states and 34248 transitions. [2024-11-24 00:45:18,330 INFO L78 Accepts]: Start accepts. Automaton has 25152 states and 34248 transitions. Word has length 65 [2024-11-24 00:45:18,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:18,331 INFO L471 AbstractCegarLoop]: Abstraction has 25152 states and 34248 transitions. [2024-11-24 00:45:18,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-24 00:45:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 25152 states and 34248 transitions. [2024-11-24 00:45:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 00:45:18,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:18,336 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:45:18,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:45:18,336 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:18,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash 76199226, now seen corresponding path program 1 times [2024-11-24 00:45:18,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:18,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559568953] [2024-11-24 00:45:18,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:18,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:19,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:19,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559568953] [2024-11-24 00:45:19,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559568953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:19,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292717799] [2024-11-24 00:45:19,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:19,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:19,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:19,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:19,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:45:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:19,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 00:45:19,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:45:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:21,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:45:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:23,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292717799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:45:23,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:45:23,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 43 [2024-11-24 00:45:23,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131722361] [2024-11-24 00:45:23,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:45:23,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-24 00:45:23,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:23,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-24 00:45:23,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 00:45:23,285 INFO L87 Difference]: Start difference. First operand 25152 states and 34248 transitions. Second operand has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 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) [2024-11-24 00:45:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:44,510 INFO L93 Difference]: Finished difference Result 62532 states and 85111 transitions. [2024-11-24 00:45:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-11-24 00:45:44,511 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 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 65 [2024-11-24 00:45:44,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:44,593 INFO L225 Difference]: With dead ends: 62532 [2024-11-24 00:45:44,593 INFO L226 Difference]: Without dead ends: 45862 [2024-11-24 00:45:44,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18032 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=6503, Invalid=43897, Unknown=0, NotChecked=0, Total=50400 [2024-11-24 00:45:44,614 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 5061 mSDsluCounter, 4413 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5061 SdHoareTripleChecker+Valid, 4625 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:44,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5061 Valid, 4625 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-24 00:45:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45862 states. [2024-11-24 00:45:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45862 to 29070. [2024-11-24 00:45:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29070 states, 29069 states have (on average 1.3644432213010425) internal successors, (39663), 29069 states have internal predecessors, (39663), 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) [2024-11-24 00:45:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29070 states to 29070 states and 39663 transitions. [2024-11-24 00:45:45,365 INFO L78 Accepts]: Start accepts. Automaton has 29070 states and 39663 transitions. Word has length 65 [2024-11-24 00:45:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:45,365 INFO L471 AbstractCegarLoop]: Abstraction has 29070 states and 39663 transitions. [2024-11-24 00:45:45,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 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) [2024-11-24 00:45:45,366 INFO L276 IsEmpty]: Start isEmpty. Operand 29070 states and 39663 transitions. [2024-11-24 00:45:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 00:45:45,372 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:45,372 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:45:45,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:45:45,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:45:45,573 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:45,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1000094856, now seen corresponding path program 1 times [2024-11-24 00:45:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:45,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444096817] [2024-11-24 00:45:45,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:45,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:45,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:45,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444096817] [2024-11-24 00:45:45,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444096817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:45,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:45,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:45,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178487322] [2024-11-24 00:45:45,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:45,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:45,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:45,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:45,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:45,694 INFO L87 Difference]: Start difference. First operand 29070 states and 39663 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-24 00:45:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:45,820 INFO L93 Difference]: Finished difference Result 47050 states and 64097 transitions. [2024-11-24 00:45:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:45,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-24 00:45:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:45,869 INFO L225 Difference]: With dead ends: 47050 [2024-11-24 00:45:45,870 INFO L226 Difference]: Without dead ends: 18128 [2024-11-24 00:45:45,886 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 [2024-11-24 00:45:45,887 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 24 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:45,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 144 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:45,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18128 states. [2024-11-24 00:45:46,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18128 to 18126. [2024-11-24 00:45:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18126 states, 18125 states have (on average 1.3390344827586207) internal successors, (24270), 18125 states have internal predecessors, (24270), 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) [2024-11-24 00:45:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18126 states to 18126 states and 24270 transitions. [2024-11-24 00:45:46,339 INFO L78 Accepts]: Start accepts. Automaton has 18126 states and 24270 transitions. Word has length 66 [2024-11-24 00:45:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:46,339 INFO L471 AbstractCegarLoop]: Abstraction has 18126 states and 24270 transitions. [2024-11-24 00:45:46,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-24 00:45:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 18126 states and 24270 transitions. [2024-11-24 00:45:46,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 00:45:46,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:46,342 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:45:46,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:45:46,342 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:46,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1535675016, now seen corresponding path program 1 times [2024-11-24 00:45:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:46,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864300227] [2024-11-24 00:45:46,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:45:46,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864300227] [2024-11-24 00:45:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864300227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756696747] [2024-11-24 00:45:46,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:46,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:46,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:46,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:46,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:45:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:46,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:45:46,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:45:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:46,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:45:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:47,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756696747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:45:47,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:45:47,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-11-24 00:45:47,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988348913] [2024-11-24 00:45:47,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:45:47,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:45:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:47,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:45:47,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:45:47,294 INFO L87 Difference]: Start difference. First operand 18126 states and 24270 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 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) [2024-11-24 00:45:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:47,946 INFO L93 Difference]: Finished difference Result 70427 states and 93758 transitions. [2024-11-24 00:45:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:45:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 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 66 [2024-11-24 00:45:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:48,022 INFO L225 Difference]: With dead ends: 70427 [2024-11-24 00:45:48,023 INFO L226 Difference]: Without dead ends: 51769 [2024-11-24 00:45:48,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:45:48,037 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 297 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:48,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 766 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:45:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51769 states. [2024-11-24 00:45:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51769 to 51277. [2024-11-24 00:45:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51277 states, 51276 states have (on average 1.290525782042281) internal successors, (66173), 51276 states have internal predecessors, (66173), 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) [2024-11-24 00:45:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51277 states to 51277 states and 66173 transitions. [2024-11-24 00:45:49,063 INFO L78 Accepts]: Start accepts. Automaton has 51277 states and 66173 transitions. Word has length 66 [2024-11-24 00:45:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:49,063 INFO L471 AbstractCegarLoop]: Abstraction has 51277 states and 66173 transitions. [2024-11-24 00:45:49,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 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) [2024-11-24 00:45:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 51277 states and 66173 transitions. [2024-11-24 00:45:49,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 00:45:49,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:49,070 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:45:49,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:45:49,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:49,271 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:49,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1707252983, now seen corresponding path program 1 times [2024-11-24 00:45:49,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:49,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151070449] [2024-11-24 00:45:49,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:49,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:45:49,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151070449] [2024-11-24 00:45:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151070449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:49,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:49,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:49,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267846916] [2024-11-24 00:45:49,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:49,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:49,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:49,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:49,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:49,374 INFO L87 Difference]: Start difference. First operand 51277 states and 66173 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-24 00:45:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:49,833 INFO L93 Difference]: Finished difference Result 81977 states and 105738 transitions. [2024-11-24 00:45:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:49,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 66 [2024-11-24 00:45:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:49,897 INFO L225 Difference]: With dead ends: 81977 [2024-11-24 00:45:49,897 INFO L226 Difference]: Without dead ends: 31685 [2024-11-24 00:45:49,918 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 [2024-11-24 00:45:49,919 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 45 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:49,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 85 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:45:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31685 states. [2024-11-24 00:45:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31685 to 31685. [2024-11-24 00:45:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31685 states, 31684 states have (on average 1.265907082439086) internal successors, (40109), 31684 states have internal predecessors, (40109), 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) [2024-11-24 00:45:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31685 states to 31685 states and 40109 transitions. [2024-11-24 00:45:50,503 INFO L78 Accepts]: Start accepts. Automaton has 31685 states and 40109 transitions. Word has length 66 [2024-11-24 00:45:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:50,504 INFO L471 AbstractCegarLoop]: Abstraction has 31685 states and 40109 transitions. [2024-11-24 00:45:50,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-24 00:45:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 31685 states and 40109 transitions. [2024-11-24 00:45:50,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 00:45:50,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:50,506 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:45:50,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:45:50,506 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:50,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash 142443222, now seen corresponding path program 1 times [2024-11-24 00:45:50,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:50,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562084435] [2024-11-24 00:45:50,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:50,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:45:50,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562084435] [2024-11-24 00:45:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562084435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:50,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371305616] [2024-11-24 00:45:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:50,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:50,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:50,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:50,569 INFO L87 Difference]: Start difference. First operand 31685 states and 40109 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-24 00:45:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:50,952 INFO L93 Difference]: Finished difference Result 53012 states and 66943 transitions. [2024-11-24 00:45:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:50,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 67 [2024-11-24 00:45:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:50,987 INFO L225 Difference]: With dead ends: 53012 [2024-11-24 00:45:50,987 INFO L226 Difference]: Without dead ends: 21401 [2024-11-24 00:45:51,006 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 [2024-11-24 00:45:51,007 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:51,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 76 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:51,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21401 states. [2024-11-24 00:45:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21401 to 21401. [2024-11-24 00:45:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21401 states, 21400 states have (on average 1.2339719626168224) internal successors, (26407), 21400 states have internal predecessors, (26407), 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) [2024-11-24 00:45:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 26407 transitions. [2024-11-24 00:45:51,578 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 26407 transitions. Word has length 67 [2024-11-24 00:45:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:51,579 INFO L471 AbstractCegarLoop]: Abstraction has 21401 states and 26407 transitions. [2024-11-24 00:45:51,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-24 00:45:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 26407 transitions. [2024-11-24 00:45:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 00:45:51,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:51,585 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:45:51,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:45:51,586 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:51,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:51,587 INFO L85 PathProgramCache]: Analyzing trace with hash 404521601, now seen corresponding path program 1 times [2024-11-24 00:45:51,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:51,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036198210] [2024-11-24 00:45:51,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:51,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:45:51,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:51,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036198210] [2024-11-24 00:45:51,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036198210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:51,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:51,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:51,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54872499] [2024-11-24 00:45:51,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:51,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:51,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:51,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:51,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:51,708 INFO L87 Difference]: Start difference. First operand 21401 states and 26407 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-24 00:45:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:51,935 INFO L93 Difference]: Finished difference Result 32818 states and 40597 transitions. [2024-11-24 00:45:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:51,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 67 [2024-11-24 00:45:51,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:51,963 INFO L225 Difference]: With dead ends: 32818 [2024-11-24 00:45:51,963 INFO L226 Difference]: Without dead ends: 11604 [2024-11-24 00:45:51,976 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 [2024-11-24 00:45:51,981 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 44 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:51,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 88 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:45:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11604 states. [2024-11-24 00:45:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11604 to 11604. [2024-11-24 00:45:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11604 states, 11603 states have (on average 1.219426010514522) internal successors, (14149), 11603 states have internal predecessors, (14149), 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) [2024-11-24 00:45:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11604 states to 11604 states and 14149 transitions. [2024-11-24 00:45:52,204 INFO L78 Accepts]: Start accepts. Automaton has 11604 states and 14149 transitions. Word has length 67 [2024-11-24 00:45:52,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:52,204 INFO L471 AbstractCegarLoop]: Abstraction has 11604 states and 14149 transitions. [2024-11-24 00:45:52,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-24 00:45:52,205 INFO L276 IsEmpty]: Start isEmpty. Operand 11604 states and 14149 transitions. [2024-11-24 00:45:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-24 00:45:52,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:52,210 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2024-11-24 00:45:52,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:45:52,211 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:52,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash -539067345, now seen corresponding path program 1 times [2024-11-24 00:45:52,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:52,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174008230] [2024-11-24 00:45:52,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:53,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:53,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174008230] [2024-11-24 00:45:53,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174008230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:53,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158082554] [2024-11-24 00:45:53,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:53,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:53,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:53,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:53,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:45:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:53,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:45:53,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:45:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:54,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:45:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:56,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158082554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:45:56,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:45:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 31 [2024-11-24 00:45:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193979264] [2024-11-24 00:45:56,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:45:56,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 00:45:56,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:56,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 00:45:56,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2024-11-24 00:45:56,305 INFO L87 Difference]: Start difference. First operand 11604 states and 14149 transitions. Second operand has 32 states, 32 states have (on average 8.25) internal successors, (264), 31 states have internal predecessors, (264), 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) [2024-11-24 00:46:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:46:00,490 INFO L93 Difference]: Finished difference Result 21553 states and 26658 transitions. [2024-11-24 00:46:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-24 00:46:00,490 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.25) internal successors, (264), 31 states have internal predecessors, (264), 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 110 [2024-11-24 00:46:00,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:46:00,503 INFO L225 Difference]: With dead ends: 21553 [2024-11-24 00:46:00,503 INFO L226 Difference]: Without dead ends: 15758 [2024-11-24 00:46:00,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1252, Invalid=5888, Unknown=0, NotChecked=0, Total=7140 [2024-11-24 00:46:00,511 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 2109 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:46:00,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 1436 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:46:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15758 states. [2024-11-24 00:46:00,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15758 to 6825. [2024-11-24 00:46:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6825 states, 6824 states have (on average 1.2121922626025792) internal successors, (8272), 6824 states have internal predecessors, (8272), 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) [2024-11-24 00:46:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6825 states to 6825 states and 8272 transitions. [2024-11-24 00:46:00,663 INFO L78 Accepts]: Start accepts. Automaton has 6825 states and 8272 transitions. Word has length 110 [2024-11-24 00:46:00,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:46:00,663 INFO L471 AbstractCegarLoop]: Abstraction has 6825 states and 8272 transitions. [2024-11-24 00:46:00,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.25) internal successors, (264), 31 states have internal predecessors, (264), 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) [2024-11-24 00:46:00,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6825 states and 8272 transitions. [2024-11-24 00:46:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-24 00:46:00,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:46:00,667 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:46:00,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:46:00,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 00:46:00,867 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:46:00,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:46:00,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1785934306, now seen corresponding path program 1 times [2024-11-24 00:46:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:46:00,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037670897] [2024-11-24 00:46:00,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:00,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:46:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:01,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:46:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037670897] [2024-11-24 00:46:01,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037670897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:46:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125896907] [2024-11-24 00:46:01,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:01,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:46:01,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:46:01,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:46:01,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:46:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:01,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:46:01,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:46:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:02,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:46:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:04,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125896907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:46:04,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:46:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-24 00:46:04,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961778906] [2024-11-24 00:46:04,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:46:04,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 00:46:04,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:46:04,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 00:46:04,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-24 00:46:04,294 INFO L87 Difference]: Start difference. First operand 6825 states and 8272 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 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) [2024-11-24 00:46:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:46:04,921 INFO L93 Difference]: Finished difference Result 10800 states and 13198 transitions. [2024-11-24 00:46:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:46:04,921 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 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 110 [2024-11-24 00:46:04,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:46:04,926 INFO L225 Difference]: With dead ends: 10800 [2024-11-24 00:46:04,926 INFO L226 Difference]: Without dead ends: 6742 [2024-11-24 00:46:04,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 00:46:04,930 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 388 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:46:04,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 679 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:46:04,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6742 states. [2024-11-24 00:46:04,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6742 to 6738. [2024-11-24 00:46:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 6737 states have (on average 1.1932610954430756) internal successors, (8039), 6737 states have internal predecessors, (8039), 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) [2024-11-24 00:46:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 8039 transitions. [2024-11-24 00:46:05,003 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 8039 transitions. Word has length 110 [2024-11-24 00:46:05,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:46:05,003 INFO L471 AbstractCegarLoop]: Abstraction has 6738 states and 8039 transitions. [2024-11-24 00:46:05,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 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) [2024-11-24 00:46:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 8039 transitions. [2024-11-24 00:46:05,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-24 00:46:05,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:46:05,006 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:46:05,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:46:05,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 00:46:05,207 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:46:05,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:46:05,208 INFO L85 PathProgramCache]: Analyzing trace with hash -590516994, now seen corresponding path program 1 times [2024-11-24 00:46:05,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:46:05,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962886839] [2024-11-24 00:46:05,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:05,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:46:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:07,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:46:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962886839] [2024-11-24 00:46:07,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962886839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:46:07,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393800193] [2024-11-24 00:46:07,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:07,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:46:07,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:46:07,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:46:07,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:46:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:07,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:46:07,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:46:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:10,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:46:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:14,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393800193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:46:14,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:46:14,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 55 [2024-11-24 00:46:14,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738482474] [2024-11-24 00:46:14,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:46:14,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-24 00:46:14,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:46:14,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-24 00:46:14,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2789, Unknown=0, NotChecked=0, Total=2970 [2024-11-24 00:46:14,220 INFO L87 Difference]: Start difference. First operand 6738 states and 8039 transitions. Second operand has 55 states, 55 states have (on average 5.745454545454545) internal successors, (316), 55 states have internal predecessors, (316), 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) [2024-11-24 00:46:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:46:33,062 INFO L93 Difference]: Finished difference Result 21051 states and 25484 transitions. [2024-11-24 00:46:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-24 00:46:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.745454545454545) internal successors, (316), 55 states have internal predecessors, (316), 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 111 [2024-11-24 00:46:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:46:33,074 INFO L225 Difference]: With dead ends: 21051 [2024-11-24 00:46:33,074 INFO L226 Difference]: Without dead ends: 18064 [2024-11-24 00:46:33,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8346 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=2946, Invalid=29274, Unknown=0, NotChecked=0, Total=32220 [2024-11-24 00:46:33,079 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 2020 mSDsluCounter, 9872 mSDsCounter, 0 mSdLazyCounter, 5904 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 10171 SdHoareTripleChecker+Invalid, 5939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 5904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:46:33,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2020 Valid, 10171 Invalid, 5939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 5904 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-24 00:46:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18064 states. [2024-11-24 00:46:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18064 to 13982. [2024-11-24 00:46:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13982 states, 13981 states have (on average 1.2007009512910378) internal successors, (16787), 13981 states have internal predecessors, (16787), 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) [2024-11-24 00:46:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13982 states to 13982 states and 16787 transitions. [2024-11-24 00:46:33,292 INFO L78 Accepts]: Start accepts. Automaton has 13982 states and 16787 transitions. Word has length 111 [2024-11-24 00:46:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:46:33,292 INFO L471 AbstractCegarLoop]: Abstraction has 13982 states and 16787 transitions. [2024-11-24 00:46:33,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.745454545454545) internal successors, (316), 55 states have internal predecessors, (316), 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) [2024-11-24 00:46:33,292 INFO L276 IsEmpty]: Start isEmpty. Operand 13982 states and 16787 transitions. [2024-11-24 00:46:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 00:46:33,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:46:33,295 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:46:33,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:46:33,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 00:46:33,496 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:46:33,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:46:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1181769735, now seen corresponding path program 1 times [2024-11-24 00:46:33,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:46:33,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261486563] [2024-11-24 00:46:33,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:46:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:35,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:46:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261486563] [2024-11-24 00:46:35,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261486563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:46:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324473335] [2024-11-24 00:46:35,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:46:35,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:46:35,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:46:35,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:46:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:35,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-24 00:46:35,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:46:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:39,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:46:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:42,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324473335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:46:42,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:46:42,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 21] total 61 [2024-11-24 00:46:42,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608296684] [2024-11-24 00:46:42,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:46:42,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-24 00:46:42,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:46:42,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-24 00:46:42,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2024-11-24 00:46:42,165 INFO L87 Difference]: Start difference. First operand 13982 states and 16787 transitions. Second operand has 61 states, 61 states have (on average 4.901639344262295) internal successors, (299), 61 states have internal predecessors, (299), 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) [2024-11-24 00:47:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:47:06,198 INFO L93 Difference]: Finished difference Result 38808 states and 46915 transitions. [2024-11-24 00:47:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2024-11-24 00:47:06,198 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.901639344262295) internal successors, (299), 61 states have internal predecessors, (299), 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 112 [2024-11-24 00:47:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:47:06,221 INFO L225 Difference]: With dead ends: 38808 [2024-11-24 00:47:06,221 INFO L226 Difference]: Without dead ends: 34287 [2024-11-24 00:47:06,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15371 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=5961, Invalid=44439, Unknown=0, NotChecked=0, Total=50400 [2024-11-24 00:47:06,227 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 1953 mSDsluCounter, 5427 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 5611 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:47:06,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 5611 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 00:47:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34287 states. [2024-11-24 00:47:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34287 to 24593. [2024-11-24 00:47:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24593 states, 24592 states have (on average 1.205757970071568) internal successors, (29652), 24592 states have internal predecessors, (29652), 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) [2024-11-24 00:47:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24593 states to 24593 states and 29652 transitions. [2024-11-24 00:47:06,529 INFO L78 Accepts]: Start accepts. Automaton has 24593 states and 29652 transitions. Word has length 112 [2024-11-24 00:47:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:47:06,529 INFO L471 AbstractCegarLoop]: Abstraction has 24593 states and 29652 transitions. [2024-11-24 00:47:06,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.901639344262295) internal successors, (299), 61 states have internal predecessors, (299), 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) [2024-11-24 00:47:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 24593 states and 29652 transitions. [2024-11-24 00:47:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 00:47:06,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:47:06,532 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:47:06,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:47:06,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 00:47:06,733 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:47:06,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:47:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1237323942, now seen corresponding path program 1 times [2024-11-24 00:47:06,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:47:06,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919564798] [2024-11-24 00:47:06,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:06,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:47:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:08,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:47:08,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919564798] [2024-11-24 00:47:08,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919564798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:47:08,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227846258] [2024-11-24 00:47:08,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:08,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:47:08,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:47:08,555 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:47:08,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:47:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:08,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 00:47:08,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:47:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:11,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:47:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:15,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227846258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:47:15,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:47:15,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 60 [2024-11-24 00:47:15,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666276841] [2024-11-24 00:47:15,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:47:15,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 00:47:15,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:47:15,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 00:47:15,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=3246, Unknown=0, NotChecked=0, Total=3540 [2024-11-24 00:47:15,146 INFO L87 Difference]: Start difference. First operand 24593 states and 29652 transitions. Second operand has 60 states, 60 states have (on average 5.316666666666666) internal successors, (319), 60 states have internal predecessors, (319), 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) [2024-11-24 00:47:22,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:47:22,000 INFO L93 Difference]: Finished difference Result 46277 states and 55913 transitions. [2024-11-24 00:47:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-24 00:47:22,001 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 5.316666666666666) internal successors, (319), 60 states have internal predecessors, (319), 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 112 [2024-11-24 00:47:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:47:22,030 INFO L225 Difference]: With dead ends: 46277 [2024-11-24 00:47:22,030 INFO L226 Difference]: Without dead ends: 37311 [2024-11-24 00:47:22,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1194, Invalid=10362, Unknown=0, NotChecked=0, Total=11556 [2024-11-24 00:47:22,041 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 834 mSDsluCounter, 5060 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 5215 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:47:22,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 5215 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 00:47:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37311 states. [2024-11-24 00:47:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37311 to 30069. [2024-11-24 00:47:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30069 states, 30068 states have (on average 1.2025076493281894) internal successors, (36157), 30068 states have internal predecessors, (36157), 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) [2024-11-24 00:47:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30069 states to 30069 states and 36157 transitions. [2024-11-24 00:47:22,626 INFO L78 Accepts]: Start accepts. Automaton has 30069 states and 36157 transitions. Word has length 112 [2024-11-24 00:47:22,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:47:22,626 INFO L471 AbstractCegarLoop]: Abstraction has 30069 states and 36157 transitions. [2024-11-24 00:47:22,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 5.316666666666666) internal successors, (319), 60 states have internal predecessors, (319), 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) [2024-11-24 00:47:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 30069 states and 36157 transitions. [2024-11-24 00:47:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-24 00:47:22,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:47:22,629 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-11-24 00:47:22,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:47:22,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:47:22,830 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:47:22,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:47:22,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2042226134, now seen corresponding path program 1 times [2024-11-24 00:47:22,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:47:22,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439031627] [2024-11-24 00:47:22,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:47:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:25,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:47:25,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439031627] [2024-11-24 00:47:25,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439031627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:47:25,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474012237] [2024-11-24 00:47:25,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:25,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:47:25,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:47:25,379 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:47:25,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:47:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:25,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-24 00:47:25,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:47:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:29,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:47:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:33,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474012237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:47:33,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:47:33,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 20] total 66 [2024-11-24 00:47:33,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718497677] [2024-11-24 00:47:33,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:47:33,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-24 00:47:33,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:47:33,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-24 00:47:33,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4027, Unknown=0, NotChecked=0, Total=4290 [2024-11-24 00:47:33,011 INFO L87 Difference]: Start difference. First operand 30069 states and 36157 transitions. Second operand has 66 states, 66 states have (on average 4.696969696969697) internal successors, (310), 66 states have internal predecessors, (310), 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) [2024-11-24 00:47:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:47:48,725 INFO L93 Difference]: Finished difference Result 65476 states and 79083 transitions. [2024-11-24 00:47:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-24 00:47:48,726 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.696969696969697) internal successors, (310), 66 states have internal predecessors, (310), 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 113 [2024-11-24 00:47:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:47:48,771 INFO L225 Difference]: With dead ends: 65476 [2024-11-24 00:47:48,771 INFO L226 Difference]: Without dead ends: 54033 [2024-11-24 00:47:48,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5918 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=2289, Invalid=20061, Unknown=0, NotChecked=0, Total=22350 [2024-11-24 00:47:48,784 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 2348 mSDsluCounter, 6008 mSDsCounter, 0 mSdLazyCounter, 3398 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 6169 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:47:48,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 6169 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3398 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-24 00:47:48,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54033 states. [2024-11-24 00:47:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54033 to 42987. [2024-11-24 00:47:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42987 states, 42986 states have (on average 1.2003210347555018) internal successors, (51597), 42986 states have internal predecessors, (51597), 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) [2024-11-24 00:47:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42987 states to 42987 states and 51597 transitions. [2024-11-24 00:47:49,408 INFO L78 Accepts]: Start accepts. Automaton has 42987 states and 51597 transitions. Word has length 113 [2024-11-24 00:47:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:47:49,409 INFO L471 AbstractCegarLoop]: Abstraction has 42987 states and 51597 transitions. [2024-11-24 00:47:49,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.696969696969697) internal successors, (310), 66 states have internal predecessors, (310), 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) [2024-11-24 00:47:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 42987 states and 51597 transitions. [2024-11-24 00:47:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-24 00:47:49,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:47:49,410 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:47:49,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:47:49,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:47:49,611 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:47:49,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:47:49,612 INFO L85 PathProgramCache]: Analyzing trace with hash -71600930, now seen corresponding path program 1 times [2024-11-24 00:47:49,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:47:49,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618546043] [2024-11-24 00:47:49,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:49,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:47:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 54 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:47:50,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:47:50,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618546043] [2024-11-24 00:47:50,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618546043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:47:50,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059464918] [2024-11-24 00:47:50,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:50,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:47:50,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:47:50,242 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:47:50,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:47:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:50,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 00:47:50,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:47:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 31 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:51,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:47:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:53,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059464918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:47:53,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:47:53,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 12] total 37 [2024-11-24 00:47:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313641183] [2024-11-24 00:47:53,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:47:53,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-24 00:47:53,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:47:53,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-24 00:47:53,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 00:47:53,238 INFO L87 Difference]: Start difference. First operand 42987 states and 51597 transitions. Second operand has 37 states, 37 states have (on average 8.378378378378379) internal successors, (310), 37 states have internal predecessors, (310), 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) [2024-11-24 00:47:58,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:47:58,886 INFO L93 Difference]: Finished difference Result 86225 states and 103714 transitions. [2024-11-24 00:47:58,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-24 00:47:58,887 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.378378378378379) internal successors, (310), 37 states have internal predecessors, (310), 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 113 [2024-11-24 00:47:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:47:58,932 INFO L225 Difference]: With dead ends: 86225 [2024-11-24 00:47:58,932 INFO L226 Difference]: Without dead ends: 45848 [2024-11-24 00:47:58,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1630, Invalid=9712, Unknown=0, NotChecked=0, Total=11342 [2024-11-24 00:47:58,955 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 1007 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 4355 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:47:58,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 4355 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 00:47:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45848 states. [2024-11-24 00:47:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45848 to 40386. [2024-11-24 00:47:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40386 states, 40385 states have (on average 1.190986752507119) internal successors, (48098), 40385 states have internal predecessors, (48098), 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) [2024-11-24 00:47:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40386 states to 40386 states and 48098 transitions. [2024-11-24 00:47:59,525 INFO L78 Accepts]: Start accepts. Automaton has 40386 states and 48098 transitions. Word has length 113 [2024-11-24 00:47:59,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:47:59,525 INFO L471 AbstractCegarLoop]: Abstraction has 40386 states and 48098 transitions. [2024-11-24 00:47:59,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.378378378378379) internal successors, (310), 37 states have internal predecessors, (310), 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) [2024-11-24 00:47:59,525 INFO L276 IsEmpty]: Start isEmpty. Operand 40386 states and 48098 transitions. [2024-11-24 00:47:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-24 00:47:59,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:47:59,527 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:47:59,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-24 00:47:59,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:47:59,727 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:47:59,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:47:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2137192752, now seen corresponding path program 1 times [2024-11-24 00:47:59,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:47:59,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642838578] [2024-11-24 00:47:59,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:47:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:01,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642838578] [2024-11-24 00:48:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642838578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341200233] [2024-11-24 00:48:01,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:01,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:01,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:01,555 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:01,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:48:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:01,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 00:48:01,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:03,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:48:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:04,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341200233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:48:04,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:48:04,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16, 15] total 53 [2024-11-24 00:48:04,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986541015] [2024-11-24 00:48:04,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:48:05,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-24 00:48:05,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:05,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-24 00:48:05,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2556, Unknown=0, NotChecked=0, Total=2756 [2024-11-24 00:48:05,001 INFO L87 Difference]: Start difference. First operand 40386 states and 48098 transitions. Second operand has 53 states, 53 states have (on average 5.962264150943396) internal successors, (316), 53 states have internal predecessors, (316), 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) [2024-11-24 00:48:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:20,251 INFO L93 Difference]: Finished difference Result 99677 states and 119454 transitions. [2024-11-24 00:48:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-24 00:48:20,251 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.962264150943396) internal successors, (316), 53 states have internal predecessors, (316), 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 114 [2024-11-24 00:48:20,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:20,310 INFO L225 Difference]: With dead ends: 99677 [2024-11-24 00:48:20,310 INFO L226 Difference]: Without dead ends: 66493 [2024-11-24 00:48:20,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10838 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=4378, Invalid=31154, Unknown=0, NotChecked=0, Total=35532 [2024-11-24 00:48:20,331 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 1249 mSDsluCounter, 5518 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 5685 SdHoareTripleChecker+Invalid, 3864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:20,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 5685 Invalid, 3864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 00:48:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66493 states. [2024-11-24 00:48:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66493 to 52927. [2024-11-24 00:48:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52927 states, 52926 states have (on average 1.1947436042776707) internal successors, (63233), 52926 states have internal predecessors, (63233), 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) [2024-11-24 00:48:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52927 states to 52927 states and 63233 transitions. [2024-11-24 00:48:20,946 INFO L78 Accepts]: Start accepts. Automaton has 52927 states and 63233 transitions. Word has length 114 [2024-11-24 00:48:20,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:20,947 INFO L471 AbstractCegarLoop]: Abstraction has 52927 states and 63233 transitions. [2024-11-24 00:48:20,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.962264150943396) internal successors, (316), 53 states have internal predecessors, (316), 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) [2024-11-24 00:48:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand 52927 states and 63233 transitions. [2024-11-24 00:48:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-24 00:48:20,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:20,948 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-11-24 00:48:20,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 00:48:21,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:21,149 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:21,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash -858394813, now seen corresponding path program 1 times [2024-11-24 00:48:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829321626] [2024-11-24 00:48:21,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:23,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:23,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829321626] [2024-11-24 00:48:23,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829321626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:23,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598521449] [2024-11-24 00:48:23,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:23,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:23,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:23,252 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:23,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:48:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:23,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:48:23,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 29 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:27,251 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:48:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 29 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:30,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598521449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:48:30,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:48:30,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 18] total 57 [2024-11-24 00:48:30,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250872609] [2024-11-24 00:48:30,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:48:30,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-24 00:48:30,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:30,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-24 00:48:30,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3019, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 00:48:30,213 INFO L87 Difference]: Start difference. First operand 52927 states and 63233 transitions. Second operand has 57 states, 57 states have (on average 5.526315789473684) internal successors, (315), 57 states have internal predecessors, (315), 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) [2024-11-24 00:48:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:40,033 INFO L93 Difference]: Finished difference Result 71832 states and 85844 transitions. [2024-11-24 00:48:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-24 00:48:40,034 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.526315789473684) internal successors, (315), 57 states have internal predecessors, (315), 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 114 [2024-11-24 00:48:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:40,080 INFO L225 Difference]: With dead ends: 71832 [2024-11-24 00:48:40,080 INFO L226 Difference]: Without dead ends: 45829 [2024-11-24 00:48:40,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1915 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=1144, Invalid=10198, Unknown=0, NotChecked=0, Total=11342 [2024-11-24 00:48:40,099 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 1206 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2252 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:40,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 4277 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2252 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 00:48:40,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45829 states. [2024-11-24 00:48:40,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45829 to 42546. [2024-11-24 00:48:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42546 states, 42545 states have (on average 1.195369608649665) internal successors, (50857), 42545 states have internal predecessors, (50857), 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) [2024-11-24 00:48:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42546 states to 42546 states and 50857 transitions. [2024-11-24 00:48:40,590 INFO L78 Accepts]: Start accepts. Automaton has 42546 states and 50857 transitions. Word has length 114 [2024-11-24 00:48:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:40,590 INFO L471 AbstractCegarLoop]: Abstraction has 42546 states and 50857 transitions. [2024-11-24 00:48:40,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.526315789473684) internal successors, (315), 57 states have internal predecessors, (315), 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) [2024-11-24 00:48:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 42546 states and 50857 transitions. [2024-11-24 00:48:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-24 00:48:40,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:40,591 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:40,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:48:40,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-24 00:48:40,792 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:40,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:40,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1792090718, now seen corresponding path program 1 times [2024-11-24 00:48:40,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:40,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025324290] [2024-11-24 00:48:40,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:42,045 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 29 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:42,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:42,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025324290] [2024-11-24 00:48:42,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025324290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:42,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154226868] [2024-11-24 00:48:42,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:42,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:42,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:42,048 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:42,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:48:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:42,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-24 00:48:42,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:45,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:48:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 29 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:49,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154226868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:48:49,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:48:49,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 24] total 63 [2024-11-24 00:48:49,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081263980] [2024-11-24 00:48:49,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:48:49,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-24 00:48:49,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:49,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-24 00:48:49,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=3509, Unknown=0, NotChecked=0, Total=3906 [2024-11-24 00:48:49,937 INFO L87 Difference]: Start difference. First operand 42546 states and 50857 transitions. Second operand has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 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) [2024-11-24 00:49:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:49:10,342 INFO L93 Difference]: Finished difference Result 84383 states and 101292 transitions. [2024-11-24 00:49:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-24 00:49:10,342 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 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 115 [2024-11-24 00:49:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:49:10,386 INFO L225 Difference]: With dead ends: 84383 [2024-11-24 00:49:10,386 INFO L226 Difference]: Without dead ends: 53267 [2024-11-24 00:49:10,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17386 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=6432, Invalid=44870, Unknown=0, NotChecked=0, Total=51302 [2024-11-24 00:49:10,406 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 2225 mSDsluCounter, 5660 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 5865 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:49:10,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 5865 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 00:49:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53267 states. [2024-11-24 00:49:10,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53267 to 34187. [2024-11-24 00:49:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34187 states, 34186 states have (on average 1.1912186275083367) internal successors, (40723), 34186 states have internal predecessors, (40723), 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) [2024-11-24 00:49:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34187 states to 34187 states and 40723 transitions. [2024-11-24 00:49:10,781 INFO L78 Accepts]: Start accepts. Automaton has 34187 states and 40723 transitions. Word has length 115 [2024-11-24 00:49:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:49:10,781 INFO L471 AbstractCegarLoop]: Abstraction has 34187 states and 40723 transitions. [2024-11-24 00:49:10,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 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) [2024-11-24 00:49:10,782 INFO L276 IsEmpty]: Start isEmpty. Operand 34187 states and 40723 transitions. [2024-11-24 00:49:10,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-24 00:49:10,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:49:10,783 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:49:10,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 00:49:10,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:49:10,983 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:49:10,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:49:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash 918280660, now seen corresponding path program 1 times [2024-11-24 00:49:10,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:49:10,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229408807] [2024-11-24 00:49:10,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:49:10,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:49:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:49:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:49:12,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:49:12,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229408807] [2024-11-24 00:49:12,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229408807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:49:12,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035143411] [2024-11-24 00:49:12,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:49:12,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:49:12,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:49:12,861 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:49:12,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:49:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:49:13,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-24 00:49:13,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:49:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:49:17,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:49:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:49:22,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035143411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:49:22,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:49:22,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 28] total 75 [2024-11-24 00:49:22,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808418881] [2024-11-24 00:49:22,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:49:22,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-24 00:49:22,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:49:22,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-24 00:49:22,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=5127, Unknown=0, NotChecked=0, Total=5550 [2024-11-24 00:49:22,891 INFO L87 Difference]: Start difference. First operand 34187 states and 40723 transitions. Second operand has 75 states, 75 states have (on average 4.28) internal successors, (321), 75 states have internal predecessors, (321), 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) [2024-11-24 00:49:53,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:49:53,472 INFO L93 Difference]: Finished difference Result 43199 states and 51579 transitions. [2024-11-24 00:49:53,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-11-24 00:49:53,473 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.28) internal successors, (321), 75 states have internal predecessors, (321), 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 115 [2024-11-24 00:49:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:49:53,496 INFO L225 Difference]: With dead ends: 43199 [2024-11-24 00:49:53,496 INFO L226 Difference]: Without dead ends: 33397 [2024-11-24 00:49:53,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12340 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=5847, Invalid=38885, Unknown=0, NotChecked=0, Total=44732 [2024-11-24 00:49:53,507 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 1694 mSDsluCounter, 7094 mSDsCounter, 0 mSdLazyCounter, 5099 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 7295 SdHoareTripleChecker+Invalid, 5144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:49:53,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 7295 Invalid, 5144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 5099 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-24 00:49:53,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33397 states. [2024-11-24 00:49:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33397 to 33337. [2024-11-24 00:49:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33337 states, 33336 states have (on average 1.1907847372210223) internal successors, (39696), 33336 states have internal predecessors, (39696), 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) [2024-11-24 00:49:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33337 states to 33337 states and 39696 transitions. [2024-11-24 00:49:53,880 INFO L78 Accepts]: Start accepts. Automaton has 33337 states and 39696 transitions. Word has length 115 [2024-11-24 00:49:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:49:53,880 INFO L471 AbstractCegarLoop]: Abstraction has 33337 states and 39696 transitions. [2024-11-24 00:49:53,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.28) internal successors, (321), 75 states have internal predecessors, (321), 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) [2024-11-24 00:49:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 33337 states and 39696 transitions. [2024-11-24 00:49:53,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-24 00:49:53,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:49:53,883 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:49:53,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 00:49:54,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:49:54,084 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:49:54,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:49:54,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1215915099, now seen corresponding path program 1 times [2024-11-24 00:49:54,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:49:54,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526197853] [2024-11-24 00:49:54,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:49:54,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:49:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:49:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-24 00:49:54,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:49:54,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526197853] [2024-11-24 00:49:54,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526197853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:49:54,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:49:54,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:49:54,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170836395] [2024-11-24 00:49:54,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:49:54,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:49:54,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:49:54,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:49:54,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:49:54,130 INFO L87 Difference]: Start difference. First operand 33337 states and 39696 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-24 00:49:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:49:54,230 INFO L93 Difference]: Finished difference Result 64750 states and 77542 transitions. [2024-11-24 00:49:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:49:54,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 156 [2024-11-24 00:49:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:49:54,252 INFO L225 Difference]: With dead ends: 64750 [2024-11-24 00:49:54,252 INFO L226 Difference]: Without dead ends: 30472 [2024-11-24 00:49:54,264 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 [2024-11-24 00:49:54,265 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 27 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:49:54,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 156 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:49:54,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30472 states. [2024-11-24 00:49:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30472 to 28545. [2024-11-24 00:49:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28545 states, 28544 states have (on average 1.1625560538116593) internal successors, (33184), 28544 states have internal predecessors, (33184), 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) [2024-11-24 00:49:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28545 states to 28545 states and 33184 transitions. [2024-11-24 00:49:54,479 INFO L78 Accepts]: Start accepts. Automaton has 28545 states and 33184 transitions. Word has length 156 [2024-11-24 00:49:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:49:54,480 INFO L471 AbstractCegarLoop]: Abstraction has 28545 states and 33184 transitions. [2024-11-24 00:49:54,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-24 00:49:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 28545 states and 33184 transitions. [2024-11-24 00:49:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:49:54,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:49:54,482 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:49:54,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-24 00:49:54,482 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:49:54,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:49:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash -154031252, now seen corresponding path program 1 times [2024-11-24 00:49:54,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:49:54,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165660391] [2024-11-24 00:49:54,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:49:54,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:49:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:49:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 62 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:49:55,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:49:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165660391] [2024-11-24 00:49:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165660391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:49:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613926772] [2024-11-24 00:49:55,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:49:55,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:49:55,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:49:55,555 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:49:55,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 00:49:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:49:55,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-24 00:49:55,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:49:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 149 proven. 67 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 00:49:59,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:50:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 32 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:50:04,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613926772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:50:04,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:50:04,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 27] total 66 [2024-11-24 00:50:04,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193742066] [2024-11-24 00:50:04,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:50:04,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-24 00:50:04,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:04,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-24 00:50:04,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=3733, Unknown=0, NotChecked=0, Total=4290 [2024-11-24 00:50:04,996 INFO L87 Difference]: Start difference. First operand 28545 states and 33184 transitions. Second operand has 66 states, 66 states have (on average 6.46969696969697) internal successors, (427), 66 states have internal predecessors, (427), 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) [2024-11-24 00:51:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:22,191 INFO L93 Difference]: Finished difference Result 79840 states and 92672 transitions. [2024-11-24 00:51:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2024-11-24 00:51:22,192 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 6.46969696969697) internal successors, (427), 66 states have internal predecessors, (427), 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 158 [2024-11-24 00:51:22,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:22,242 INFO L225 Difference]: With dead ends: 79840 [2024-11-24 00:51:22,242 INFO L226 Difference]: Without dead ends: 56940 [2024-11-24 00:51:22,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59419 ImplicationChecksByTransitivity, 72.3s TimeCoverageRelationStatistics Valid=23145, Invalid=120875, Unknown=0, NotChecked=0, Total=144020 [2024-11-24 00:51:22,262 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 4507 mSDsluCounter, 6831 mSDsCounter, 0 mSdLazyCounter, 7106 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 7078 SdHoareTripleChecker+Invalid, 7254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 7106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:22,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 7078 Invalid, 7254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 7106 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-24 00:51:22,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56940 states. [2024-11-24 00:51:22,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56940 to 43697. [2024-11-24 00:51:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43697 states, 43696 states have (on average 1.1597171365800074) internal successors, (50675), 43696 states have internal predecessors, (50675), 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) [2024-11-24 00:51:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43697 states to 43697 states and 50675 transitions. [2024-11-24 00:51:22,698 INFO L78 Accepts]: Start accepts. Automaton has 43697 states and 50675 transitions. Word has length 158 [2024-11-24 00:51:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:22,698 INFO L471 AbstractCegarLoop]: Abstraction has 43697 states and 50675 transitions. [2024-11-24 00:51:22,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 6.46969696969697) internal successors, (427), 66 states have internal predecessors, (427), 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) [2024-11-24 00:51:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 43697 states and 50675 transitions. [2024-11-24 00:51:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-24 00:51:22,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:22,701 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:22,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 00:51:22,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:22,901 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:22,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash 459176474, now seen corresponding path program 1 times [2024-11-24 00:51:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:22,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434622564] [2024-11-24 00:51:22,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 22 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:24,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434622564] [2024-11-24 00:51:24,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434622564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735142921] [2024-11-24 00:51:24,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:24,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:24,904 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:24,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 00:51:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:25,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-24 00:51:25,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 22 proven. 202 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 00:51:29,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:51:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 22 proven. 202 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 00:51:33,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735142921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:51:33,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:51:33,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21, 21] total 64 [2024-11-24 00:51:33,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830416419] [2024-11-24 00:51:33,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:51:33,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-24 00:51:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:33,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-24 00:51:33,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3801, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 00:51:33,416 INFO L87 Difference]: Start difference. First operand 43697 states and 50675 transitions. Second operand has 64 states, 64 states have (on average 6.8125) internal successors, (436), 64 states have internal predecessors, (436), 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) [2024-11-24 00:51:45,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:45,908 INFO L93 Difference]: Finished difference Result 44188 states and 51207 transitions. [2024-11-24 00:51:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-24 00:51:45,909 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.8125) internal successors, (436), 64 states have internal predecessors, (436), 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 159 [2024-11-24 00:51:45,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:45,941 INFO L225 Difference]: With dead ends: 44188 [2024-11-24 00:51:45,941 INFO L226 Difference]: Without dead ends: 42900 [2024-11-24 00:51:45,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2933 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=2175, Invalid=15117, Unknown=0, NotChecked=0, Total=17292 [2024-11-24 00:51:45,950 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 985 mSDsluCounter, 6166 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:45,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 6362 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-24 00:51:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42900 states. [2024-11-24 00:51:46,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42900 to 41765. [2024-11-24 00:51:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41765 states, 41764 states have (on average 1.161047792357054) internal successors, (48490), 41764 states have internal predecessors, (48490), 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) [2024-11-24 00:51:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41765 states to 41765 states and 48490 transitions. [2024-11-24 00:51:46,285 INFO L78 Accepts]: Start accepts. Automaton has 41765 states and 48490 transitions. Word has length 159 [2024-11-24 00:51:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:46,285 INFO L471 AbstractCegarLoop]: Abstraction has 41765 states and 48490 transitions. [2024-11-24 00:51:46,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.8125) internal successors, (436), 64 states have internal predecessors, (436), 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) [2024-11-24 00:51:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 41765 states and 48490 transitions. [2024-11-24 00:51:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:51:46,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:46,287 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 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, 1, 1] [2024-11-24 00:51:46,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 00:51:46,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:46,488 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:46,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash 578060408, now seen corresponding path program 2 times [2024-11-24 00:51:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:46,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308500201] [2024-11-24 00:51:46,489 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:51:46,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:46,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:51:46,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:51:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 00:51:46,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:46,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308500201] [2024-11-24 00:51:46,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308500201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:46,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399257707] [2024-11-24 00:51:46,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:51:46,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:46,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:46,725 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:46,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 00:51:46,929 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:51:46,930 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:51:46,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:51:46,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 28 proven. 210 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 00:51:47,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:51:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 137 proven. 108 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:51:47,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399257707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:51:47,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:51:47,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 9] total 15 [2024-11-24 00:51:47,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945935155] [2024-11-24 00:51:47,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:51:47,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 00:51:47,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:47,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 00:51:47,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:51:47,907 INFO L87 Difference]: Start difference. First operand 41765 states and 48490 transitions. Second operand has 15 states, 15 states have (on average 22.333333333333332) internal successors, (335), 15 states have internal predecessors, (335), 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) [2024-11-24 00:51:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:48,219 INFO L93 Difference]: Finished difference Result 100333 states and 117547 transitions. [2024-11-24 00:51:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:51:48,219 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 22.333333333333332) internal successors, (335), 15 states have internal predecessors, (335), 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 160 [2024-11-24 00:51:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:48,267 INFO L225 Difference]: With dead ends: 100333 [2024-11-24 00:51:48,267 INFO L226 Difference]: Without dead ends: 59250 [2024-11-24 00:51:48,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:51:48,284 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 369 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:48,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 889 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:51:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59250 states. [2024-11-24 00:51:48,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59250 to 57249. [2024-11-24 00:51:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57249 states, 57248 states have (on average 1.1503109278926775) internal successors, (65853), 57248 states have internal predecessors, (65853), 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) [2024-11-24 00:51:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57249 states to 57249 states and 65853 transitions. [2024-11-24 00:51:48,981 INFO L78 Accepts]: Start accepts. Automaton has 57249 states and 65853 transitions. Word has length 160 [2024-11-24 00:51:48,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:48,981 INFO L471 AbstractCegarLoop]: Abstraction has 57249 states and 65853 transitions. [2024-11-24 00:51:48,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 22.333333333333332) internal successors, (335), 15 states have internal predecessors, (335), 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) [2024-11-24 00:51:48,982 INFO L276 IsEmpty]: Start isEmpty. Operand 57249 states and 65853 transitions. [2024-11-24 00:51:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:51:48,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:48,985 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:48,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 00:51:49,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 00:51:49,186 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:49,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:49,187 INFO L85 PathProgramCache]: Analyzing trace with hash -36979272, now seen corresponding path program 1 times [2024-11-24 00:51:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:49,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491951669] [2024-11-24 00:51:49,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:49,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 48 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:50,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:50,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491951669] [2024-11-24 00:51:50,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491951669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:50,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249619554] [2024-11-24 00:51:50,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:50,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:50,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:50,801 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:50,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 00:51:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:51,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-24 00:51:51,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 48 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:55,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:51:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 48 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:59,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249619554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:51:59,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:51:59,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29, 26] total 69 [2024-11-24 00:51:59,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274765337] [2024-11-24 00:51:59,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:51:59,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-24 00:51:59,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:59,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-24 00:51:59,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=4198, Unknown=0, NotChecked=0, Total=4692 [2024-11-24 00:51:59,168 INFO L87 Difference]: Start difference. First operand 57249 states and 65853 transitions. Second operand has 69 states, 69 states have (on average 6.043478260869565) internal successors, (417), 69 states have internal predecessors, (417), 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) [2024-11-24 00:52:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:52:25,024 INFO L93 Difference]: Finished difference Result 73996 states and 85186 transitions. [2024-11-24 00:52:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2024-11-24 00:52:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.043478260869565) internal successors, (417), 69 states have internal predecessors, (417), 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 160 [2024-11-24 00:52:25,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:52:25,053 INFO L225 Difference]: With dead ends: 73996 [2024-11-24 00:52:25,053 INFO L226 Difference]: Without dead ends: 36571 [2024-11-24 00:52:25,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 273 SyntacticMatches, 1 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13653 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=5793, Invalid=39363, Unknown=0, NotChecked=0, Total=45156 [2024-11-24 00:52:25,072 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 1161 mSDsluCounter, 7766 mSDsCounter, 0 mSdLazyCounter, 4717 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 8023 SdHoareTripleChecker+Invalid, 4777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 4717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:52:25,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 8023 Invalid, 4777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 4717 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 00:52:25,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36571 states. [2024-11-24 00:52:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36571 to 31406. [2024-11-24 00:52:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31406 states, 31405 states have (on average 1.1457092819614711) internal successors, (35981), 31405 states have internal predecessors, (35981), 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) [2024-11-24 00:52:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31406 states to 31406 states and 35981 transitions. [2024-11-24 00:52:25,479 INFO L78 Accepts]: Start accepts. Automaton has 31406 states and 35981 transitions. Word has length 160 [2024-11-24 00:52:25,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:52:25,480 INFO L471 AbstractCegarLoop]: Abstraction has 31406 states and 35981 transitions. [2024-11-24 00:52:25,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.043478260869565) internal successors, (417), 69 states have internal predecessors, (417), 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) [2024-11-24 00:52:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 31406 states and 35981 transitions. [2024-11-24 00:52:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:52:25,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:52:25,482 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:52:25,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 00:52:25,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 00:52:25,683 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:52:25,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:52:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2019759976, now seen corresponding path program 1 times [2024-11-24 00:52:25,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:52:25,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770371493] [2024-11-24 00:52:25,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:25,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:52:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:52:27,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:27,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770371493] [2024-11-24 00:52:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770371493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:52:27,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271341419] [2024-11-24 00:52:27,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:27,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:27,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:52:27,220 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:52:27,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 00:52:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:27,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-24 00:52:27,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:52:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:52:31,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:52:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:52:36,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271341419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:52:36,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:52:36,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 23] total 65 [2024-11-24 00:52:36,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728256332] [2024-11-24 00:52:36,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:52:36,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-24 00:52:36,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:52:36,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-24 00:52:36,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=3894, Unknown=0, NotChecked=0, Total=4160 [2024-11-24 00:52:36,108 INFO L87 Difference]: Start difference. First operand 31406 states and 35981 transitions. Second operand has 65 states, 65 states have (on average 6.553846153846154) internal successors, (426), 65 states have internal predecessors, (426), 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) [2024-11-24 00:53:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:20,401 INFO L93 Difference]: Finished difference Result 44715 states and 51152 transitions. [2024-11-24 00:53:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2024-11-24 00:53:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 6.553846153846154) internal successors, (426), 65 states have internal predecessors, (426), 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 160 [2024-11-24 00:53:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:20,421 INFO L225 Difference]: With dead ends: 44715 [2024-11-24 00:53:20,421 INFO L226 Difference]: Without dead ends: 27259 [2024-11-24 00:53:20,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 277 SyntacticMatches, 2 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23093 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=7613, Invalid=64479, Unknown=0, NotChecked=0, Total=72092 [2024-11-24 00:53:20,434 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 2360 mSDsluCounter, 11185 mSDsCounter, 0 mSdLazyCounter, 7080 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 11509 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 7080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:20,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 11509 Invalid, 7164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 7080 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-24 00:53:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27259 states. [2024-11-24 00:53:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27259 to 18314. [2024-11-24 00:53:20,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18314 states, 18313 states have (on average 1.129634685742369) internal successors, (20687), 18313 states have internal predecessors, (20687), 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) [2024-11-24 00:53:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18314 states to 18314 states and 20687 transitions. [2024-11-24 00:53:20,611 INFO L78 Accepts]: Start accepts. Automaton has 18314 states and 20687 transitions. Word has length 160 [2024-11-24 00:53:20,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:20,611 INFO L471 AbstractCegarLoop]: Abstraction has 18314 states and 20687 transitions. [2024-11-24 00:53:20,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 6.553846153846154) internal successors, (426), 65 states have internal predecessors, (426), 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) [2024-11-24 00:53:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 18314 states and 20687 transitions. [2024-11-24 00:53:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:53:20,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:20,613 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 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, 1, 1, 1, 1] [2024-11-24 00:53:20,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 00:53:20,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 00:53:20,813 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:20,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash 99494165, now seen corresponding path program 1 times [2024-11-24 00:53:20,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:20,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079970873] [2024-11-24 00:53:20,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:20,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-24 00:53:21,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:21,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079970873] [2024-11-24 00:53:21,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079970873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:21,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:21,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:53:21,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111838786] [2024-11-24 00:53:21,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:21,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:21,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:21,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:21,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:53:21,022 INFO L87 Difference]: Start difference. First operand 18314 states and 20687 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-11-24 00:53:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:21,140 INFO L93 Difference]: Finished difference Result 25643 states and 29096 transitions. [2024-11-24 00:53:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:53:21,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 161 [2024-11-24 00:53:21,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:21,160 INFO L225 Difference]: With dead ends: 25643 [2024-11-24 00:53:21,160 INFO L226 Difference]: Without dead ends: 17493 [2024-11-24 00:53:21,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:21,168 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 156 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:21,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 288 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:53:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17493 states. [2024-11-24 00:53:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17493 to 16019. [2024-11-24 00:53:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16019 states, 16018 states have (on average 1.1251716818579098) internal successors, (18023), 16018 states have internal predecessors, (18023), 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) [2024-11-24 00:53:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16019 states to 16019 states and 18023 transitions. [2024-11-24 00:53:21,359 INFO L78 Accepts]: Start accepts. Automaton has 16019 states and 18023 transitions. Word has length 161 [2024-11-24 00:53:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:21,360 INFO L471 AbstractCegarLoop]: Abstraction has 16019 states and 18023 transitions. [2024-11-24 00:53:21,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-11-24 00:53:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 16019 states and 18023 transitions. [2024-11-24 00:53:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:53:21,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:21,363 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:21,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-24 00:53:21,364 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:21,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:21,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1180369513, now seen corresponding path program 1 times [2024-11-24 00:53:21,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:21,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418329657] [2024-11-24 00:53:21,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:21,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:22,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:22,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418329657] [2024-11-24 00:53:22,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418329657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:22,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568995663] [2024-11-24 00:53:22,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:22,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:22,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:22,757 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:22,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 00:53:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:22,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-24 00:53:22,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:25,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:53:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:28,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568995663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:53:28,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:53:28,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 55 [2024-11-24 00:53:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273142303] [2024-11-24 00:53:28,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:53:28,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-24 00:53:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:28,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-24 00:53:28,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2760, Unknown=0, NotChecked=0, Total=2970 [2024-11-24 00:53:28,834 INFO L87 Difference]: Start difference. First operand 16019 states and 18023 transitions. Second operand has 55 states, 55 states have (on average 7.709090909090909) internal successors, (424), 55 states have internal predecessors, (424), 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) [2024-11-24 00:53:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:43,062 INFO L93 Difference]: Finished difference Result 16694 states and 18742 transitions. [2024-11-24 00:53:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-24 00:53:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 7.709090909090909) internal successors, (424), 55 states have internal predecessors, (424), 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 161 [2024-11-24 00:53:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:43,073 INFO L225 Difference]: With dead ends: 16694 [2024-11-24 00:53:43,073 INFO L226 Difference]: Without dead ends: 16057 [2024-11-24 00:53:43,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6981 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=3025, Invalid=20845, Unknown=0, NotChecked=0, Total=23870 [2024-11-24 00:53:43,079 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 943 mSDsluCounter, 6799 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 7056 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:43,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 7056 Invalid, 3365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 00:53:43,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2024-11-24 00:53:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 15425. [2024-11-24 00:53:43,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15425 states, 15424 states have (on average 1.1277878630705394) internal successors, (17395), 15424 states have internal predecessors, (17395), 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) [2024-11-24 00:53:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15425 states to 15425 states and 17395 transitions. [2024-11-24 00:53:43,313 INFO L78 Accepts]: Start accepts. Automaton has 15425 states and 17395 transitions. Word has length 161 [2024-11-24 00:53:43,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:43,314 INFO L471 AbstractCegarLoop]: Abstraction has 15425 states and 17395 transitions. [2024-11-24 00:53:43,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 7.709090909090909) internal successors, (424), 55 states have internal predecessors, (424), 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) [2024-11-24 00:53:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 15425 states and 17395 transitions. [2024-11-24 00:53:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:53:43,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:43,315 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 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, 1, 1, 1, 1] [2024-11-24 00:53:43,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-24 00:53:43,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:43,516 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:43,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:43,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1073049458, now seen corresponding path program 1 times [2024-11-24 00:53:43,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:43,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66569024] [2024-11-24 00:53:43,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:43,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-24 00:53:43,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:43,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66569024] [2024-11-24 00:53:43,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66569024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:43,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:43,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:53:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456409371] [2024-11-24 00:53:43,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:43,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:43,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:43,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:43,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:53:43,699 INFO L87 Difference]: Start difference. First operand 15425 states and 17395 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-11-24 00:53:43,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:43,780 INFO L93 Difference]: Finished difference Result 22925 states and 25965 transitions. [2024-11-24 00:53:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:53:43,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 161 [2024-11-24 00:53:43,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:43,791 INFO L225 Difference]: With dead ends: 22925 [2024-11-24 00:53:43,791 INFO L226 Difference]: Without dead ends: 13959 [2024-11-24 00:53:43,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:43,797 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 166 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:43,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 309 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:53:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13959 states. [2024-11-24 00:53:43,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13959 to 12731. [2024-11-24 00:53:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12731 states, 12730 states have (on average 1.1211311861743911) internal successors, (14272), 12730 states have internal predecessors, (14272), 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) [2024-11-24 00:53:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12731 states to 12731 states and 14272 transitions. [2024-11-24 00:53:43,957 INFO L78 Accepts]: Start accepts. Automaton has 12731 states and 14272 transitions. Word has length 161 [2024-11-24 00:53:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:43,958 INFO L471 AbstractCegarLoop]: Abstraction has 12731 states and 14272 transitions. [2024-11-24 00:53:43,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-11-24 00:53:43,958 INFO L276 IsEmpty]: Start isEmpty. Operand 12731 states and 14272 transitions. [2024-11-24 00:53:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:53:43,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:43,960 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:43,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-24 00:53:43,961 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:43,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash 680022448, now seen corresponding path program 1 times [2024-11-24 00:53:43,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:43,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140553529] [2024-11-24 00:53:43,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:43,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 32 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140553529] [2024-11-24 00:53:45,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140553529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271693411] [2024-11-24 00:53:45,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:45,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:45,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:45,905 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:45,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 00:53:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:46,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-24 00:53:46,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 32 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:55,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 32 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:54:02,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271693411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:02,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:02,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 34, 28] total 83 [2024-11-24 00:54:02,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294974165] [2024-11-24 00:54:02,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:02,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-24 00:54:02,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:02,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-24 00:54:02,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=6126, Unknown=0, NotChecked=0, Total=6806 [2024-11-24 00:54:02,796 INFO L87 Difference]: Start difference. First operand 12731 states and 14272 transitions. Second operand has 83 states, 83 states have (on average 5.566265060240964) internal successors, (462), 83 states have internal predecessors, (462), 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) [2024-11-24 00:55:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:15,660 INFO L93 Difference]: Finished difference Result 18698 states and 21083 transitions. [2024-11-24 00:55:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2024-11-24 00:55:15,660 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 5.566265060240964) internal successors, (462), 83 states have internal predecessors, (462), 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 161 [2024-11-24 00:55:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:15,665 INFO L225 Difference]: With dead ends: 18698 [2024-11-24 00:55:15,665 INFO L226 Difference]: Without dead ends: 7914 [2024-11-24 00:55:15,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16143 ImplicationChecksByTransitivity, 72.6s TimeCoverageRelationStatistics Valid=7128, Invalid=42824, Unknown=0, NotChecked=0, Total=49952 [2024-11-24 00:55:15,671 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 4534 mSDsluCounter, 4218 mSDsCounter, 0 mSdLazyCounter, 5479 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4534 SdHoareTripleChecker+Valid, 4354 SdHoareTripleChecker+Invalid, 5660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 5479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:15,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4534 Valid, 4354 Invalid, 5660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 5479 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-24 00:55:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2024-11-24 00:55:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 7842. [2024-11-24 00:55:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7842 states, 7841 states have (on average 1.11618416018365) internal successors, (8752), 7841 states have internal predecessors, (8752), 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) [2024-11-24 00:55:15,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 8752 transitions. [2024-11-24 00:55:15,730 INFO L78 Accepts]: Start accepts. Automaton has 7842 states and 8752 transitions. Word has length 161 [2024-11-24 00:55:15,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:15,731 INFO L471 AbstractCegarLoop]: Abstraction has 7842 states and 8752 transitions. [2024-11-24 00:55:15,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 5.566265060240964) internal successors, (462), 83 states have internal predecessors, (462), 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) [2024-11-24 00:55:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states and 8752 transitions. [2024-11-24 00:55:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:55:15,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:15,733 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:15,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 00:55:15,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:15,933 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:15,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash 835382944, now seen corresponding path program 1 times [2024-11-24 00:55:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496189356] [2024-11-24 00:55:15,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-24 00:55:16,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:16,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496189356] [2024-11-24 00:55:16,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496189356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:16,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:16,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:55:16,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447004813] [2024-11-24 00:55:16,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:16,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:55:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:16,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:55:16,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:55:16,055 INFO L87 Difference]: Start difference. First operand 7842 states and 8752 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-24 00:55:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:16,111 INFO L93 Difference]: Finished difference Result 9105 states and 10241 transitions. [2024-11-24 00:55:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:55:16,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 161 [2024-11-24 00:55:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:16,116 INFO L225 Difference]: With dead ends: 9105 [2024-11-24 00:55:16,116 INFO L226 Difference]: Without dead ends: 8593 [2024-11-24 00:55:16,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:55:16,118 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 150 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:16,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 270 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2024-11-24 00:55:16,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 7527. [2024-11-24 00:55:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7527 states, 7526 states have (on average 1.115997874036673) internal successors, (8399), 7526 states have internal predecessors, (8399), 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) [2024-11-24 00:55:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 8399 transitions. [2024-11-24 00:55:16,181 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 8399 transitions. Word has length 161 [2024-11-24 00:55:16,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:16,181 INFO L471 AbstractCegarLoop]: Abstraction has 7527 states and 8399 transitions. [2024-11-24 00:55:16,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-24 00:55:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 8399 transitions. [2024-11-24 00:55:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:55:16,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:16,183 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:16,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-24 00:55:16,184 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:16,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash -853560798, now seen corresponding path program 1 times [2024-11-24 00:55:16,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:16,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767119217] [2024-11-24 00:55:16,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:17,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:17,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767119217] [2024-11-24 00:55:17,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767119217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:17,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426845121] [2024-11-24 00:55:17,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:17,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:17,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:17,194 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:17,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 00:55:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:17,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 00:55:17,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 78 proven. 153 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-24 00:55:18,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 199 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-24 00:55:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426845121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:55:20,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:55:20,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 31 [2024-11-24 00:55:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988556916] [2024-11-24 00:55:20,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:20,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 00:55:20,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:20,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 00:55:20,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2024-11-24 00:55:20,682 INFO L87 Difference]: Start difference. First operand 7527 states and 8399 transitions. Second operand has 32 states, 32 states have (on average 12.0625) internal successors, (386), 31 states have internal predecessors, (386), 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) [2024-11-24 00:55:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:24,829 INFO L93 Difference]: Finished difference Result 13675 states and 15411 transitions. [2024-11-24 00:55:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-24 00:55:24,830 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 12.0625) internal successors, (386), 31 states have internal predecessors, (386), 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 161 [2024-11-24 00:55:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:24,835 INFO L225 Difference]: With dead ends: 13675 [2024-11-24 00:55:24,835 INFO L226 Difference]: Without dead ends: 7861 [2024-11-24 00:55:24,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1018, Invalid=4384, Unknown=0, NotChecked=0, Total=5402 [2024-11-24 00:55:24,839 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 530 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:24,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1296 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 00:55:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7861 states. [2024-11-24 00:55:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7861 to 6535. [2024-11-24 00:55:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 6534 states have (on average 1.0993265993265993) internal successors, (7183), 6534 states have internal predecessors, (7183), 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) [2024-11-24 00:55:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 7183 transitions. [2024-11-24 00:55:24,890 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 7183 transitions. Word has length 161 [2024-11-24 00:55:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:24,890 INFO L471 AbstractCegarLoop]: Abstraction has 6535 states and 7183 transitions. [2024-11-24 00:55:24,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 12.0625) internal successors, (386), 31 states have internal predecessors, (386), 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) [2024-11-24 00:55:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 7183 transitions. [2024-11-24 00:55:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:55:24,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:24,891 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:24,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-24 00:55:25,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:25,092 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:25,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:25,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1466632336, now seen corresponding path program 1 times [2024-11-24 00:55:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:25,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190831226] [2024-11-24 00:55:25,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:25,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:27,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:27,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190831226] [2024-11-24 00:55:27,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190831226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:27,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283333125] [2024-11-24 00:55:27,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:27,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:27,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:27,276 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:27,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 00:55:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:27,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-24 00:55:27,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 66 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:31,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 64 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283333125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:55:37,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:55:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23, 22] total 72 [2024-11-24 00:55:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920075009] [2024-11-24 00:55:37,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:37,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-24 00:55:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:37,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-24 00:55:37,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=4792, Unknown=0, NotChecked=0, Total=5112 [2024-11-24 00:55:37,532 INFO L87 Difference]: Start difference. First operand 6535 states and 7183 transitions. Second operand has 72 states, 72 states have (on average 6.236111111111111) internal successors, (449), 72 states have internal predecessors, (449), 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) [2024-11-24 00:56:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:56:40,430 INFO L93 Difference]: Finished difference Result 7475 states and 8155 transitions. [2024-11-24 00:56:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-24 00:56:40,431 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 6.236111111111111) internal successors, (449), 72 states have internal predecessors, (449), 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 161 [2024-11-24 00:56:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:56:40,435 INFO L225 Difference]: With dead ends: 7475 [2024-11-24 00:56:40,435 INFO L226 Difference]: Without dead ends: 7100 [2024-11-24 00:56:40,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8653 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=5462, Invalid=29694, Unknown=0, NotChecked=0, Total=35156 [2024-11-24 00:56:40,437 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 3289 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 5363 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 4995 SdHoareTripleChecker+Invalid, 5504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 5363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:56:40,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3289 Valid, 4995 Invalid, 5504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 5363 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-24 00:56:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2024-11-24 00:56:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 6442. [2024-11-24 00:56:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6442 states, 6441 states have (on average 1.1002949852507375) internal successors, (7087), 6441 states have internal predecessors, (7087), 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) [2024-11-24 00:56:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6442 states to 6442 states and 7087 transitions. [2024-11-24 00:56:40,484 INFO L78 Accepts]: Start accepts. Automaton has 6442 states and 7087 transitions. Word has length 161 [2024-11-24 00:56:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:56:40,484 INFO L471 AbstractCegarLoop]: Abstraction has 6442 states and 7087 transitions. [2024-11-24 00:56:40,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 6.236111111111111) internal successors, (449), 72 states have internal predecessors, (449), 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) [2024-11-24 00:56:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 6442 states and 7087 transitions. [2024-11-24 00:56:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 00:56:40,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:56:40,485 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1] [2024-11-24 00:56:40,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-24 00:56:40,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:40,686 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:56:40,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:56:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1999632577, now seen corresponding path program 1 times [2024-11-24 00:56:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:56:40,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524562378] [2024-11-24 00:56:40,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:40,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:56:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 158 proven. 62 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 00:56:41,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:56:41,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524562378] [2024-11-24 00:56:41,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524562378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:56:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257631290] [2024-11-24 00:56:41,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:41,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:41,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:56:41,233 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:56:41,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-24 00:56:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:41,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 00:56:41,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:56:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 62 proven. 150 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 00:56:42,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:56:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 118 proven. 94 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 00:56:43,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257631290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:56:43,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:56:43,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 28 [2024-11-24 00:56:43,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30565496] [2024-11-24 00:56:43,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:56:43,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-24 00:56:43,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:56:43,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-24 00:56:43,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2024-11-24 00:56:43,842 INFO L87 Difference]: Start difference. First operand 6442 states and 7087 transitions. Second operand has 28 states, 28 states have (on average 11.714285714285714) internal successors, (328), 28 states have internal predecessors, (328), 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) [2024-11-24 00:56:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:56:44,429 INFO L93 Difference]: Finished difference Result 12560 states and 14067 transitions. [2024-11-24 00:56:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 00:56:44,429 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.714285714285714) internal successors, (328), 28 states have internal predecessors, (328), 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 162 [2024-11-24 00:56:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:56:44,434 INFO L225 Difference]: With dead ends: 12560 [2024-11-24 00:56:44,434 INFO L226 Difference]: Without dead ends: 8161 [2024-11-24 00:56:44,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=1157, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 00:56:44,437 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 150 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:56:44,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1965 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:56:44,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2024-11-24 00:56:44,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 6976. [2024-11-24 00:56:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6976 states, 6975 states have (on average 1.1099641577060932) internal successors, (7742), 6975 states have internal predecessors, (7742), 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) [2024-11-24 00:56:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6976 states to 6976 states and 7742 transitions. [2024-11-24 00:56:44,483 INFO L78 Accepts]: Start accepts. Automaton has 6976 states and 7742 transitions. Word has length 162 [2024-11-24 00:56:44,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:56:44,483 INFO L471 AbstractCegarLoop]: Abstraction has 6976 states and 7742 transitions. [2024-11-24 00:56:44,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.714285714285714) internal successors, (328), 28 states have internal predecessors, (328), 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) [2024-11-24 00:56:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 6976 states and 7742 transitions. [2024-11-24 00:56:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 00:56:44,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:56:44,484 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:56:44,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-24 00:56:44,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-24 00:56:44,684 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:56:44,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:56:44,685 INFO L85 PathProgramCache]: Analyzing trace with hash -438273941, now seen corresponding path program 1 times [2024-11-24 00:56:44,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:56:44,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912913218] [2024-11-24 00:56:44,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:44,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:56:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 59 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:56:46,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:56:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912913218] [2024-11-24 00:56:46,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912913218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:56:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372362520] [2024-11-24 00:56:46,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:46,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:46,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:56:46,658 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:56:46,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 00:56:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:46,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-24 00:56:46,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:56:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 50 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:56:51,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:56:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 101 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:56:58,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372362520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:56:58,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:56:58,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24, 24] total 74 [2024-11-24 00:56:58,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990169077] [2024-11-24 00:56:58,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:56:58,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-24 00:56:58,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:56:58,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-24 00:56:58,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=5094, Unknown=0, NotChecked=0, Total=5402 [2024-11-24 00:56:58,261 INFO L87 Difference]: Start difference. First operand 6976 states and 7742 transitions. Second operand has 74 states, 74 states have (on average 6.243243243243243) internal successors, (462), 74 states have internal predecessors, (462), 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) [2024-11-24 00:57:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:57:26,381 INFO L93 Difference]: Finished difference Result 7183 states and 7952 transitions. [2024-11-24 00:57:26,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-24 00:57:26,382 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 6.243243243243243) internal successors, (462), 74 states have internal predecessors, (462), 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 164 [2024-11-24 00:57:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:57:26,386 INFO L225 Difference]: With dead ends: 7183 [2024-11-24 00:57:26,386 INFO L226 Difference]: Without dead ends: 6757 [2024-11-24 00:57:26,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3682 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=3635, Invalid=17535, Unknown=0, NotChecked=0, Total=21170 [2024-11-24 00:57:26,390 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 1898 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 3493 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:57:26,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 2711 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-24 00:57:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6757 states. [2024-11-24 00:57:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6757 to 6751. [2024-11-24 00:57:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6751 states, 6750 states have (on average 1.1118518518518519) internal successors, (7505), 6750 states have internal predecessors, (7505), 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) [2024-11-24 00:57:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6751 states to 6751 states and 7505 transitions. [2024-11-24 00:57:26,436 INFO L78 Accepts]: Start accepts. Automaton has 6751 states and 7505 transitions. Word has length 164 [2024-11-24 00:57:26,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:57:26,437 INFO L471 AbstractCegarLoop]: Abstraction has 6751 states and 7505 transitions. [2024-11-24 00:57:26,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 6.243243243243243) internal successors, (462), 74 states have internal predecessors, (462), 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) [2024-11-24 00:57:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6751 states and 7505 transitions. [2024-11-24 00:57:26,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 00:57:26,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:57:26,438 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:26,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-24 00:57:26,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-24 00:57:26,638 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:57:26,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash 561693321, now seen corresponding path program 1 times [2024-11-24 00:57:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:26,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715524975] [2024-11-24 00:57:26,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:26,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 126 proven. 6 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-24 00:57:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:27,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715524975] [2024-11-24 00:57:27,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715524975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:27,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276030787] [2024-11-24 00:57:27,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:27,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:27,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:27,729 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:27,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-24 00:57:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:27,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-24 00:57:28,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 124 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-24 00:57:31,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 126 proven. 6 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-24 00:57:38,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276030787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:38,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:38,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26, 28] total 71 [2024-11-24 00:57:38,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830572109] [2024-11-24 00:57:38,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:38,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-24 00:57:38,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:38,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-24 00:57:38,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=4504, Unknown=0, NotChecked=0, Total=4970 [2024-11-24 00:57:38,864 INFO L87 Difference]: Start difference. First operand 6751 states and 7505 transitions. Second operand has 71 states, 71 states have (on average 3.0985915492957745) internal successors, (220), 71 states have internal predecessors, (220), 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) [2024-11-24 00:57:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:57:59,045 INFO L93 Difference]: Finished difference Result 9616 states and 10703 transitions. [2024-11-24 00:57:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-24 00:57:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.0985915492957745) internal successors, (220), 71 states have internal predecessors, (220), 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 167 [2024-11-24 00:57:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:57:59,051 INFO L225 Difference]: With dead ends: 9616 [2024-11-24 00:57:59,051 INFO L226 Difference]: Without dead ends: 9372 [2024-11-24 00:57:59,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4115 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=2551, Invalid=13451, Unknown=0, NotChecked=0, Total=16002 [2024-11-24 00:57:59,054 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 2188 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:57:59,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2188 Valid, 1213 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 00:57:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9372 states. [2024-11-24 00:57:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9372 to 6509. [2024-11-24 00:57:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6509 states, 6508 states have (on average 1.114781807006761) internal successors, (7255), 6508 states have internal predecessors, (7255), 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) [2024-11-24 00:57:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6509 states to 6509 states and 7255 transitions. [2024-11-24 00:57:59,111 INFO L78 Accepts]: Start accepts. Automaton has 6509 states and 7255 transitions. Word has length 167 [2024-11-24 00:57:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:57:59,111 INFO L471 AbstractCegarLoop]: Abstraction has 6509 states and 7255 transitions. [2024-11-24 00:57:59,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.0985915492957745) internal successors, (220), 71 states have internal predecessors, (220), 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) [2024-11-24 00:57:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 6509 states and 7255 transitions. [2024-11-24 00:57:59,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-24 00:57:59,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:57:59,112 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 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, 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] [2024-11-24 00:57:59,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-24 00:57:59,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-24 00:57:59,313 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:57:59,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1221066457, now seen corresponding path program 1 times [2024-11-24 00:57:59,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:59,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521192502] [2024-11-24 00:57:59,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:58:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 68 proven. 390 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:58:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:58:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521192502] [2024-11-24 00:58:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521192502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:58:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739804795] [2024-11-24 00:58:02,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:58:02,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:58:02,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:58:02,025 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:58:02,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87280b91-2441-4146-9525-c2d4caacd1f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-24 00:58:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:58:02,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-24 00:58:02,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:58:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 190 proven. 237 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 00:58:05,858 INFO L312 TraceCheckSpWp]: Computing backward predicates...