./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.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_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/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_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/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_920daefd-082b-466e-a218-19b430e02005/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 4eb775f57791ca8f3541a03278dc5eb83ecb8d3533ee7aa5dd1ca1cf24d1fbf4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:35:35,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:35:36,012 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:35:36,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:35:36,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:35:36,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:35:36,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:35:36,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:35:36,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:35:36,045 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:35:36,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:35:36,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:35:36,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:35:36,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:35:36,046 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:35:36,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:35:36,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:35:36,047 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:35:36,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:35:36,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:35:36,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:35:36,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:35:36,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:35:36,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:35:36,047 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:35:36,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:35:36,048 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:35:36,048 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:35:36,048 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:35:36,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:35:36,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:35:36,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:35:36,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:35:36,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:35:36,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:35:36,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:35:36,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:35:36,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:35:36,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:35:36,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:35:36,053 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:35:36,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:35:36,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:35:36,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:35:36,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:35:36,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:35:36,054 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:35:36,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:35:36,054 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_920daefd-082b-466e-a218-19b430e02005/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 -> 4eb775f57791ca8f3541a03278dc5eb83ecb8d3533ee7aa5dd1ca1cf24d1fbf4 [2024-11-24 01:35:36,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:35:36,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:35:36,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:35:36,403 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:35:36,404 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:35:36,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2024-11-24 01:35:39,493 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/data/eb11cbe26/d9357b024a6e49179a899c005cc9fc05/FLAGd0711d4ce [2024-11-24 01:35:40,212 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:35:40,212 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2024-11-24 01:35:40,263 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/data/eb11cbe26/d9357b024a6e49179a899c005cc9fc05/FLAGd0711d4ce [2024-11-24 01:35:40,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/data/eb11cbe26/d9357b024a6e49179a899c005cc9fc05 [2024-11-24 01:35:40,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:35:40,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:35:40,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:35:40,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:35:40,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:35:40,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:35:40" (1/1) ... [2024-11-24 01:35:40,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f043211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:40, skipping insertion in model container [2024-11-24 01:35:40,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:35:40" (1/1) ... [2024-11-24 01:35:40,449 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:35:40,833 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_920daefd-082b-466e-a218-19b430e02005/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[6354,6367] [2024-11-24 01:35:40,909 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_920daefd-082b-466e-a218-19b430e02005/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[9171,9184] [2024-11-24 01:35:41,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:35:41,967 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:35:42,012 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_920daefd-082b-466e-a218-19b430e02005/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[6354,6367] [2024-11-24 01:35:42,022 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_920daefd-082b-466e-a218-19b430e02005/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[9171,9184] [2024-11-24 01:35:42,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:35:42,621 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:35:42,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42 WrapperNode [2024-11-24 01:35:42,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:35:42,624 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:35:42,624 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:35:42,624 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:35:42,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:42,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,122 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-11-24 01:35:43,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:35:43,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:35:43,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:35:43,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:35:43,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,512 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 01:35:43,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,647 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:35:43,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:35:43,843 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:35:43,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:35:43,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (1/1) ... [2024-11-24 01:35:43,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:35:43,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:43,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:35:43,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:35:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:35:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:35:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:35:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:35:44,089 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:35:44,091 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:35:50,877 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-11-24 01:35:50,877 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:35:50,918 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:35:50,918 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-24 01:35:50,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:35:50 BoogieIcfgContainer [2024-11-24 01:35:50,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:35:50,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:35:50,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:35:50,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:35:50,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:35:40" (1/3) ... [2024-11-24 01:35:50,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a191be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:35:50, skipping insertion in model container [2024-11-24 01:35:50,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:42" (2/3) ... [2024-11-24 01:35:50,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a191be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:35:50, skipping insertion in model container [2024-11-24 01:35:50,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:35:50" (3/3) ... [2024-11-24 01:35:50,938 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2024-11-24 01:35:50,957 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:35:50,960 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-24 01:35:51,068 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:35:51,082 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;@1a6f2561, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:35:51,082 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 01:35:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 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 01:35:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-24 01:35:51,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:51,101 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] [2024-11-24 01:35:51,101 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:51,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-11-24 01:35:51,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:51,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132077537] [2024-11-24 01:35:51,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:51,381 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 01:35:51,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:51,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132077537] [2024-11-24 01:35:51,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132077537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:51,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:51,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:35:51,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932283622] [2024-11-24 01:35:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:51,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:35:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:51,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:35:51,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:35:51,418 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 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 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 01:35:51,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:51,555 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-11-24 01:35:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:35:51,558 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-24 01:35:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:51,593 INFO L225 Difference]: With dead ends: 1724 [2024-11-24 01:35:51,593 INFO L226 Difference]: Without dead ends: 807 [2024-11-24 01:35:51,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:35:51,607 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:51,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:35:51,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-24 01:35:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-11-24 01:35:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 0 states have call successors, (0), 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 01:35:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-11-24 01:35:51,733 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-11-24 01:35:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:51,734 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-11-24 01:35:51,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 01:35:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-11-24 01:35:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-24 01:35:51,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:51,736 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] [2024-11-24 01:35:51,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:35:51,736 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:51,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:51,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-11-24 01:35:51,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:51,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182105570] [2024-11-24 01:35:51,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:51,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:52,066 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 01:35:52,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:52,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182105570] [2024-11-24 01:35:52,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182105570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:52,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:52,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:35:52,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947250895] [2024-11-24 01:35:52,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:52,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:35:52,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:52,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:35:52,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:35:52,069 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 01:35:52,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:52,209 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-11-24 01:35:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:35:52,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-24 01:35:52,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:52,217 INFO L225 Difference]: With dead ends: 873 [2024-11-24 01:35:52,219 INFO L226 Difference]: Without dead ends: 838 [2024-11-24 01:35:52,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 01:35:52,221 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:52,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:35:52,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-24 01:35:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-11-24 01:35:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 0 states have call successors, (0), 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 01:35:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-11-24 01:35:52,259 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-11-24 01:35:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:52,260 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-11-24 01:35:52,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 01:35:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-11-24 01:35:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-24 01:35:52,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:52,261 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] [2024-11-24 01:35:52,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:35:52,261 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:52,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2014528043, now seen corresponding path program 1 times [2024-11-24 01:35:52,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:52,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609423266] [2024-11-24 01:35:52,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:52,417 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 01:35:52,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:52,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609423266] [2024-11-24 01:35:52,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609423266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:52,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:52,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:35:52,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924761293] [2024-11-24 01:35:52,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:52,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:35:52,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:52,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:35:52,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:35:52,424 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 01:35:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:57,401 INFO L93 Difference]: Finished difference Result 2311 states and 4382 transitions. [2024-11-24 01:35:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:35:57,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-24 01:35:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:57,412 INFO L225 Difference]: With dead ends: 2311 [2024-11-24 01:35:57,412 INFO L226 Difference]: Without dead ends: 1558 [2024-11-24 01:35:57,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:35:57,416 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 847 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:57,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 545 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-24 01:35:57,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-11-24 01:35:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2024-11-24 01:35:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1556 states have (on average 1.5989717223650386) internal successors, (2488), 1557 states have internal predecessors, (2488), 0 states have call successors, (0), 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 01:35:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2488 transitions. [2024-11-24 01:35:57,497 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2488 transitions. Word has length 24 [2024-11-24 01:35:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:57,498 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 2488 transitions. [2024-11-24 01:35:57,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 01:35:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2488 transitions. [2024-11-24 01:35:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-24 01:35:57,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:57,499 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] [2024-11-24 01:35:57,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:35:57,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:57,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-11-24 01:35:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:57,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849230790] [2024-11-24 01:35:57,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:57,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:57,738 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 01:35:57,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:57,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849230790] [2024-11-24 01:35:57,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849230790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:57,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:57,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:35:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748322729] [2024-11-24 01:35:57,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:57,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:35:57,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:57,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:35:57,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:35:57,742 INFO L87 Difference]: Start difference. First operand 1558 states and 2488 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 01:35:57,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:57,884 INFO L93 Difference]: Finished difference Result 1744 states and 2776 transitions. [2024-11-24 01:35:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:35:57,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-11-24 01:35:57,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:57,893 INFO L225 Difference]: With dead ends: 1744 [2024-11-24 01:35:57,893 INFO L226 Difference]: Without dead ends: 1713 [2024-11-24 01:35:57,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:35:57,898 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:57,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:35:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2024-11-24 01:35:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1587. [2024-11-24 01:35:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1585 states have (on average 1.5981072555205047) internal successors, (2533), 1586 states have internal predecessors, (2533), 0 states have call successors, (0), 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 01:35:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2533 transitions. [2024-11-24 01:35:57,951 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2533 transitions. Word has length 36 [2024-11-24 01:35:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:57,952 INFO L471 AbstractCegarLoop]: Abstraction has 1587 states and 2533 transitions. [2024-11-24 01:35:57,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 01:35:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2533 transitions. [2024-11-24 01:35:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 01:35:57,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:57,956 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 01:35:57,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:35:57,956 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:57,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:57,957 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-11-24 01:35:57,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:57,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715645104] [2024-11-24 01:35:57,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:57,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:58,102 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 01:35:58,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:58,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715645104] [2024-11-24 01:35:58,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715645104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:58,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:58,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:35:58,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929238000] [2024-11-24 01:35:58,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:58,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:35:58,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:58,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:35:58,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:35:58,106 INFO L87 Difference]: Start difference. First operand 1587 states and 2533 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 01:35:58,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:58,155 INFO L93 Difference]: Finished difference Result 1696 states and 2700 transitions. [2024-11-24 01:35:58,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:35:58,156 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 01:35:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:58,164 INFO L225 Difference]: With dead ends: 1696 [2024-11-24 01:35:58,164 INFO L226 Difference]: Without dead ends: 1636 [2024-11-24 01:35:58,165 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 01:35:58,167 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:58,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:35:58,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-11-24 01:35:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-11-24 01:35:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.5949754901960784) internal successors, (2603), 1633 states have internal predecessors, (2603), 0 states have call successors, (0), 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 01:35:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2603 transitions. [2024-11-24 01:35:58,224 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2603 transitions. Word has length 38 [2024-11-24 01:35:58,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:58,224 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2603 transitions. [2024-11-24 01:35:58,224 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 01:35:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2603 transitions. [2024-11-24 01:35:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 01:35:58,229 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:58,230 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 01:35:58,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:35:58,230 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:58,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-11-24 01:35:58,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:58,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390385949] [2024-11-24 01:35:58,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:58,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:58,563 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 01:35:58,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:58,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390385949] [2024-11-24 01:35:58,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390385949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:58,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:58,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:35:58,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361871086] [2024-11-24 01:35:58,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:58,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:35:58,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:58,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:35:58,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:35:58,569 INFO L87 Difference]: Start difference. First operand 1634 states and 2603 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 01:35:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:58,677 INFO L93 Difference]: Finished difference Result 1743 states and 2767 transitions. [2024-11-24 01:35:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:35:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 01:35:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:58,687 INFO L225 Difference]: With dead ends: 1743 [2024-11-24 01:35:58,688 INFO L226 Difference]: Without dead ends: 1636 [2024-11-24 01:35:58,688 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 01:35:58,689 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 4417 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:58,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4417 Valid, 1592 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:35:58,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-11-24 01:35:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-11-24 01:35:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.59375) internal successors, (2601), 1633 states have internal predecessors, (2601), 0 states have call successors, (0), 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 01:35:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2601 transitions. [2024-11-24 01:35:58,740 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2601 transitions. Word has length 38 [2024-11-24 01:35:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:58,741 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2601 transitions. [2024-11-24 01:35:58,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 01:35:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2601 transitions. [2024-11-24 01:35:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 01:35:58,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:58,744 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 01:35:58,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:35:58,745 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:58,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:58,746 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-11-24 01:35:58,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:58,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337014422] [2024-11-24 01:35:58,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:58,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:59,013 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 01:35:59,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337014422] [2024-11-24 01:35:59,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337014422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:59,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:59,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:35:59,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736261446] [2024-11-24 01:35:59,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:59,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:35:59,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:59,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:35:59,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:35:59,016 INFO L87 Difference]: Start difference. First operand 1634 states and 2601 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 01:35:59,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:59,075 INFO L93 Difference]: Finished difference Result 1642 states and 2610 transitions. [2024-11-24 01:35:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:35:59,075 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 01:35:59,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:59,082 INFO L225 Difference]: With dead ends: 1642 [2024-11-24 01:35:59,082 INFO L226 Difference]: Without dead ends: 1640 [2024-11-24 01:35:59,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 01:35:59,084 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:59,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:35:59,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-11-24 01:35:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2024-11-24 01:35:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1638 states have (on average 1.5909645909645909) internal successors, (2606), 1639 states have internal predecessors, (2606), 0 states have call successors, (0), 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 01:35:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2606 transitions. [2024-11-24 01:35:59,128 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2606 transitions. Word has length 39 [2024-11-24 01:35:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:59,130 INFO L471 AbstractCegarLoop]: Abstraction has 1640 states and 2606 transitions. [2024-11-24 01:35:59,130 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 01:35:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2606 transitions. [2024-11-24 01:35:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-24 01:35:59,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:59,131 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] [2024-11-24 01:35:59,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:35:59,132 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:59,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:59,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-11-24 01:35:59,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:59,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954095142] [2024-11-24 01:35:59,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:59,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:59,220 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 01:35:59,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:59,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954095142] [2024-11-24 01:35:59,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954095142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:59,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:59,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:35:59,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134347799] [2024-11-24 01:35:59,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:59,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:35:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:59,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:35:59,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:35:59,222 INFO L87 Difference]: Start difference. First operand 1640 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:35:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:59,268 INFO L93 Difference]: Finished difference Result 1850 states and 2910 transitions. [2024-11-24 01:35:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:35:59,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-24 01:35:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:59,275 INFO L225 Difference]: With dead ends: 1850 [2024-11-24 01:35:59,276 INFO L226 Difference]: Without dead ends: 1737 [2024-11-24 01:35:59,277 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 01:35:59,277 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:59,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:35:59,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-11-24 01:35:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2024-11-24 01:35:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.5804962492787074) internal successors, (2739), 1734 states have internal predecessors, (2739), 0 states have call successors, (0), 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 01:35:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2739 transitions. [2024-11-24 01:35:59,326 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2739 transitions. Word has length 40 [2024-11-24 01:35:59,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:59,327 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 2739 transitions. [2024-11-24 01:35:59,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:35:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2739 transitions. [2024-11-24 01:35:59,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-24 01:35:59,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:59,328 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] [2024-11-24 01:35:59,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:35:59,328 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:59,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-11-24 01:35:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:59,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665247405] [2024-11-24 01:35:59,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:59,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:59,417 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 01:35:59,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665247405] [2024-11-24 01:35:59,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665247405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:59,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:59,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:35:59,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360177196] [2024-11-24 01:35:59,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:59,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:35:59,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:59,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:35:59,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:35:59,422 INFO L87 Difference]: Start difference. First operand 1735 states and 2739 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:35:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:59,470 INFO L93 Difference]: Finished difference Result 2119 states and 3281 transitions. [2024-11-24 01:35:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:35:59,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-24 01:35:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:59,480 INFO L225 Difference]: With dead ends: 2119 [2024-11-24 01:35:59,481 INFO L226 Difference]: Without dead ends: 1911 [2024-11-24 01:35:59,483 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 01:35:59,485 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:59,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:35:59,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2024-11-24 01:35:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1909. [2024-11-24 01:35:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1907 states have (on average 1.5589931830099633) internal successors, (2973), 1908 states have internal predecessors, (2973), 0 states have call successors, (0), 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 01:35:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2973 transitions. [2024-11-24 01:35:59,541 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2973 transitions. Word has length 40 [2024-11-24 01:35:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:59,541 INFO L471 AbstractCegarLoop]: Abstraction has 1909 states and 2973 transitions. [2024-11-24 01:35:59,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:35:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2973 transitions. [2024-11-24 01:35:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-24 01:35:59,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:59,542 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] [2024-11-24 01:35:59,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:35:59,542 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:59,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-11-24 01:35:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:59,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225367765] [2024-11-24 01:35:59,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:59,615 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 01:35:59,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:59,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225367765] [2024-11-24 01:35:59,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225367765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:59,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:59,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:35:59,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444867797] [2024-11-24 01:35:59,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:59,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:35:59,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:59,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:35:59,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:35:59,617 INFO L87 Difference]: Start difference. First operand 1909 states and 2973 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:35:59,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:59,663 INFO L93 Difference]: Finished difference Result 2332 states and 3571 transitions. [2024-11-24 01:35:59,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:35:59,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-24 01:35:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:59,673 INFO L225 Difference]: With dead ends: 2332 [2024-11-24 01:35:59,673 INFO L226 Difference]: Without dead ends: 2106 [2024-11-24 01:35:59,675 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 01:35:59,677 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:59,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:35:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2024-11-24 01:35:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2024-11-24 01:35:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.5394862036156043) internal successors, (3236), 2103 states have internal predecessors, (3236), 0 states have call successors, (0), 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 01:35:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3236 transitions. [2024-11-24 01:35:59,745 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3236 transitions. Word has length 40 [2024-11-24 01:35:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:59,745 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3236 transitions. [2024-11-24 01:35:59,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:35:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3236 transitions. [2024-11-24 01:35:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 01:35:59,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:59,748 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] [2024-11-24 01:35:59,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:35:59,748 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:59,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:59,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-11-24 01:35:59,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:59,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314673289] [2024-11-24 01:35:59,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:59,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:35:59,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314673289] [2024-11-24 01:35:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314673289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:35:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375338768] [2024-11-24 01:35:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:59,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:35:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:59,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:35:59,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:35:59,953 INFO L87 Difference]: Start difference. First operand 2104 states and 3236 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 01:36:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:00,085 INFO L93 Difference]: Finished difference Result 3960 states and 5788 transitions. [2024-11-24 01:36:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:36:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 56 [2024-11-24 01:36:00,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:00,102 INFO L225 Difference]: With dead ends: 3960 [2024-11-24 01:36:00,103 INFO L226 Difference]: Without dead ends: 3386 [2024-11-24 01:36:00,105 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 01:36:00,106 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3044 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:00,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 3149 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:36:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-11-24 01:36:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2676. [2024-11-24 01:36:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2674 states have (on average 1.5018698578908003) internal successors, (4016), 2675 states have internal predecessors, (4016), 0 states have call successors, (0), 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 01:36:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4016 transitions. [2024-11-24 01:36:00,202 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4016 transitions. Word has length 56 [2024-11-24 01:36:00,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:00,203 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 4016 transitions. [2024-11-24 01:36:00,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 01:36:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4016 transitions. [2024-11-24 01:36:00,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 01:36:00,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:00,204 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] [2024-11-24 01:36:00,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:36:00,204 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:00,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:00,205 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-11-24 01:36:00,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:00,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227595127] [2024-11-24 01:36:00,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:00,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-24 01:36:00,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:00,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227595127] [2024-11-24 01:36:00,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227595127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:00,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:00,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:36:00,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179465764] [2024-11-24 01:36:00,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:00,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:36:00,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:00,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:36:00,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:36:00,355 INFO L87 Difference]: Start difference. First operand 2676 states and 4016 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:36:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:00,512 INFO L93 Difference]: Finished difference Result 4532 states and 6568 transitions. [2024-11-24 01:36:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:36:00,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 56 [2024-11-24 01:36:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:00,527 INFO L225 Difference]: With dead ends: 4532 [2024-11-24 01:36:00,527 INFO L226 Difference]: Without dead ends: 3958 [2024-11-24 01:36:00,529 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 01:36:00,529 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3048 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:00,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 3155 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:36:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2024-11-24 01:36:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3536. [2024-11-24 01:36:00,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.4646293152235428) internal successors, (5176), 3535 states have internal predecessors, (5176), 0 states have call successors, (0), 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 01:36:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5176 transitions. [2024-11-24 01:36:00,656 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5176 transitions. Word has length 56 [2024-11-24 01:36:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:00,656 INFO L471 AbstractCegarLoop]: Abstraction has 3536 states and 5176 transitions. [2024-11-24 01:36:00,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:36:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5176 transitions. [2024-11-24 01:36:00,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 01:36:00,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:00,658 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] [2024-11-24 01:36:00,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:36:00,659 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:00,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:00,659 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-11-24 01:36:00,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:00,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576764597] [2024-11-24 01:36:00,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:00,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:36:00,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:00,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576764597] [2024-11-24 01:36:00,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576764597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:00,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:00,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:36:00,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335409400] [2024-11-24 01:36:00,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:00,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:36:00,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:00,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:36:00,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:36:00,821 INFO L87 Difference]: Start difference. First operand 3536 states and 5176 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 01:36:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:00,974 INFO L93 Difference]: Finished difference Result 4792 states and 6932 transitions. [2024-11-24 01:36:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:36:00,975 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 56 [2024-11-24 01:36:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:01,005 INFO L225 Difference]: With dead ends: 4792 [2024-11-24 01:36:01,005 INFO L226 Difference]: Without dead ends: 4374 [2024-11-24 01:36:01,007 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 01:36:01,009 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3043 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:01,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3163 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:36:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2024-11-24 01:36:01,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 3952. [2024-11-24 01:36:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.4562025316455696) internal successors, (5752), 3951 states have internal predecessors, (5752), 0 states have call successors, (0), 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 01:36:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5752 transitions. [2024-11-24 01:36:01,150 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5752 transitions. Word has length 56 [2024-11-24 01:36:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:01,150 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 5752 transitions. [2024-11-24 01:36:01,151 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 01:36:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5752 transitions. [2024-11-24 01:36:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 01:36:01,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:01,152 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] [2024-11-24 01:36:01,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:36:01,153 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:01,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:01,153 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-11-24 01:36:01,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:01,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382259101] [2024-11-24 01:36:01,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:01,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:01,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:01,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382259101] [2024-11-24 01:36:01,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382259101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:01,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:01,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:36:01,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891096722] [2024-11-24 01:36:01,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:01,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:36:01,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:01,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:36:01,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:36:01,274 INFO L87 Difference]: Start difference. First operand 3952 states and 5752 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:36:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:01,412 INFO L93 Difference]: Finished difference Result 6376 states and 9062 transitions. [2024-11-24 01:36:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:36:01,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-11-24 01:36:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:01,423 INFO L225 Difference]: With dead ends: 6376 [2024-11-24 01:36:01,423 INFO L226 Difference]: Without dead ends: 3954 [2024-11-24 01:36:01,426 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 01:36:01,427 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:01,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:36:01,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2024-11-24 01:36:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3952. [2024-11-24 01:36:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.4435443037974685) internal successors, (5702), 3951 states have internal predecessors, (5702), 0 states have call successors, (0), 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 01:36:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5702 transitions. [2024-11-24 01:36:01,539 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5702 transitions. Word has length 57 [2024-11-24 01:36:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:01,539 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 5702 transitions. [2024-11-24 01:36:01,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:36:01,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5702 transitions. [2024-11-24 01:36:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-24 01:36:01,541 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:01,541 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] [2024-11-24 01:36:01,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:36:01,541 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:01,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:01,542 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-11-24 01:36:01,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:01,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280113417] [2024-11-24 01:36:01,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:01,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280113417] [2024-11-24 01:36:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280113417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:01,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:01,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:36:01,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360453874] [2024-11-24 01:36:01,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:01,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:36:01,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:01,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:36:01,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:36:01,675 INFO L87 Difference]: Start difference. First operand 3952 states and 5702 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:36:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:01,734 INFO L93 Difference]: Finished difference Result 4908 states and 6999 transitions. [2024-11-24 01:36:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:36:01,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-24 01:36:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:01,742 INFO L225 Difference]: With dead ends: 4908 [2024-11-24 01:36:01,742 INFO L226 Difference]: Without dead ends: 2486 [2024-11-24 01:36:01,747 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 01:36:01,747 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:01,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:36:01,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2024-11-24 01:36:01,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2477. [2024-11-24 01:36:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.50020202020202) internal successors, (3713), 2476 states have internal predecessors, (3713), 0 states have call successors, (0), 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 01:36:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3713 transitions. [2024-11-24 01:36:01,818 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3713 transitions. Word has length 58 [2024-11-24 01:36:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:01,820 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 3713 transitions. [2024-11-24 01:36:01,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:36:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3713 transitions. [2024-11-24 01:36:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 01:36:01,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:01,822 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] [2024-11-24 01:36:01,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:36:01,823 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:01,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-11-24 01:36:01,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:01,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241730111] [2024-11-24 01:36:01,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:01,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:01,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:01,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241730111] [2024-11-24 01:36:01,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241730111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:01,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:01,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:36:01,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853776540] [2024-11-24 01:36:01,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:01,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:36:01,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:01,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:36:01,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:36:01,948 INFO L87 Difference]: Start difference. First operand 2477 states and 3713 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:36:01,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:01,989 INFO L93 Difference]: Finished difference Result 2949 states and 4345 transitions. [2024-11-24 01:36:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:36:01,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2024-11-24 01:36:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:01,995 INFO L225 Difference]: With dead ends: 2949 [2024-11-24 01:36:01,995 INFO L226 Difference]: Without dead ends: 2011 [2024-11-24 01:36:01,997 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 01:36:01,998 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:01,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:36:02,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2024-11-24 01:36:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2024-11-24 01:36:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2007 states have (on average 1.5316392625809667) internal successors, (3074), 2008 states have internal predecessors, (3074), 0 states have call successors, (0), 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 01:36:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3074 transitions. [2024-11-24 01:36:02,047 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3074 transitions. Word has length 59 [2024-11-24 01:36:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:02,047 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 3074 transitions. [2024-11-24 01:36:02,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:36:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3074 transitions. [2024-11-24 01:36:02,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 01:36:02,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:02,052 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:36:02,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:36:02,052 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:02,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-11-24 01:36:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:02,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505738343] [2024-11-24 01:36:02,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:02,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:36:02,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:02,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505738343] [2024-11-24 01:36:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505738343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:02,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551644402] [2024-11-24 01:36:02,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:02,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:02,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:02,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:02,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:36:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:02,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 01:36:02,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:02,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:04,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551644402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:04,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:04,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-11-24 01:36:04,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738774373] [2024-11-24 01:36:04,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:04,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:36:04,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:04,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:36:04,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:36:04,163 INFO L87 Difference]: Start difference. First operand 2009 states and 3074 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 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 01:36:05,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:05,337 INFO L93 Difference]: Finished difference Result 3490 states and 4987 transitions. [2024-11-24 01:36:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 01:36:05,338 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 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 01:36:05,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:05,345 INFO L225 Difference]: With dead ends: 3490 [2024-11-24 01:36:05,346 INFO L226 Difference]: Without dead ends: 3020 [2024-11-24 01:36:05,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 01:36:05,348 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 15564 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15564 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:05,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15564 Valid, 4639 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:36:05,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2024-11-24 01:36:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2880. [2024-11-24 01:36:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2878 states have (on average 1.4388464211257819) internal successors, (4141), 2879 states have internal predecessors, (4141), 0 states have call successors, (0), 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 01:36:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4141 transitions. [2024-11-24 01:36:05,436 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4141 transitions. Word has length 61 [2024-11-24 01:36:05,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:05,437 INFO L471 AbstractCegarLoop]: Abstraction has 2880 states and 4141 transitions. [2024-11-24 01:36:05,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 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 01:36:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4141 transitions. [2024-11-24 01:36:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 01:36:05,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:05,438 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] [2024-11-24 01:36:05,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:36:05,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 01:36:05,643 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:05,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:05,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2045594482, now seen corresponding path program 1 times [2024-11-24 01:36:05,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:05,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952532759] [2024-11-24 01:36:05,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:05,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:06,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:06,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952532759] [2024-11-24 01:36:06,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952532759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:06,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289032117] [2024-11-24 01:36:06,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:06,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:06,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:06,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:06,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:36:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:06,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 01:36:06,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:07,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:08,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289032117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:08,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:08,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-24 01:36:08,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640743061] [2024-11-24 01:36:08,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:08,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 01:36:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:08,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 01:36:08,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:36:08,068 INFO L87 Difference]: Start difference. First operand 2880 states and 4141 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 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 01:36:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:09,926 INFO L93 Difference]: Finished difference Result 6371 states and 8620 transitions. [2024-11-24 01:36:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 01:36:09,927 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 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 01:36:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:09,940 INFO L225 Difference]: With dead ends: 6371 [2024-11-24 01:36:09,940 INFO L226 Difference]: Without dead ends: 5150 [2024-11-24 01:36:09,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2024-11-24 01:36:09,944 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 18135 mSDsluCounter, 4853 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18135 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:09,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18135 Valid, 6340 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:36:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2024-11-24 01:36:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 5124. [2024-11-24 01:36:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5122 states have (on average 1.3580632565404138) internal successors, (6956), 5123 states have internal predecessors, (6956), 0 states have call successors, (0), 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 01:36:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 6956 transitions. [2024-11-24 01:36:10,173 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 6956 transitions. Word has length 62 [2024-11-24 01:36:10,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:10,173 INFO L471 AbstractCegarLoop]: Abstraction has 5124 states and 6956 transitions. [2024-11-24 01:36:10,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 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 01:36:10,174 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 6956 transitions. [2024-11-24 01:36:10,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 01:36:10,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:10,175 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] [2024-11-24 01:36:10,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:36:10,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 01:36:10,376 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:10,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash -679621431, now seen corresponding path program 1 times [2024-11-24 01:36:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:10,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766640965] [2024-11-24 01:36:10,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:11,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:11,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766640965] [2024-11-24 01:36:11,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766640965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:11,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780774273] [2024-11-24 01:36:11,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:11,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:11,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:11,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:11,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:36:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:11,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 01:36:11,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:12,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:13,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780774273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:13,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:13,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-11-24 01:36:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920802681] [2024-11-24 01:36:13,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:13,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-24 01:36:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:13,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-24 01:36:13,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:36:13,914 INFO L87 Difference]: Start difference. First operand 5124 states and 6956 transitions. Second operand has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 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 01:36:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:15,815 INFO L93 Difference]: Finished difference Result 11908 states and 15807 transitions. [2024-11-24 01:36:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 01:36:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 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 01:36:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:15,839 INFO L225 Difference]: With dead ends: 11908 [2024-11-24 01:36:15,839 INFO L226 Difference]: Without dead ends: 10404 [2024-11-24 01:36:15,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=548, Invalid=2104, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 01:36:15,844 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 11683 mSDsluCounter, 13608 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11683 SdHoareTripleChecker+Valid, 15107 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:15,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11683 Valid, 15107 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:36:15,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2024-11-24 01:36:16,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 4691. [2024-11-24 01:36:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4689 states have (on average 1.3672424824056302) internal successors, (6411), 4690 states have internal predecessors, (6411), 0 states have call successors, (0), 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 01:36:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 6411 transitions. [2024-11-24 01:36:16,041 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 6411 transitions. Word has length 63 [2024-11-24 01:36:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:16,041 INFO L471 AbstractCegarLoop]: Abstraction has 4691 states and 6411 transitions. [2024-11-24 01:36:16,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 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 01:36:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 6411 transitions. [2024-11-24 01:36:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 01:36:16,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:16,043 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] [2024-11-24 01:36:16,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:36:16,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:16,243 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:16,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:16,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1861102501, now seen corresponding path program 1 times [2024-11-24 01:36:16,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:16,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184711989] [2024-11-24 01:36:16,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:16,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:17,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184711989] [2024-11-24 01:36:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184711989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98830187] [2024-11-24 01:36:17,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:17,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:17,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:17,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:36:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:17,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-24 01:36:17,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:20,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:24,057 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 01:36:24,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98830187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:24,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:24,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 18] total 46 [2024-11-24 01:36:24,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434613915] [2024-11-24 01:36:24,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:24,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-24 01:36:24,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:24,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-24 01:36:24,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1791, Unknown=0, NotChecked=0, Total=2070 [2024-11-24 01:36:24,059 INFO L87 Difference]: Start difference. First operand 4691 states and 6411 transitions. Second operand has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 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 01:36:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:40,344 INFO L93 Difference]: Finished difference Result 9442 states and 12394 transitions. [2024-11-24 01:36:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-24 01:36:40,345 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 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 01:36:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:40,360 INFO L225 Difference]: With dead ends: 9442 [2024-11-24 01:36:40,360 INFO L226 Difference]: Without dead ends: 7086 [2024-11-24 01:36:40,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4079 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=2799, Invalid=11007, Unknown=0, NotChecked=0, Total=13806 [2024-11-24 01:36:40,366 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 17935 mSDsluCounter, 14790 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17935 SdHoareTripleChecker+Valid, 16323 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:40,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17935 Valid, 16323 Invalid, 2095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 01:36:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2024-11-24 01:36:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 5864. [2024-11-24 01:36:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5862 states have (on average 1.34834527465029) internal successors, (7904), 5863 states have internal predecessors, (7904), 0 states have call successors, (0), 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 01:36:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7904 transitions. [2024-11-24 01:36:40,619 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7904 transitions. Word has length 63 [2024-11-24 01:36:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:40,619 INFO L471 AbstractCegarLoop]: Abstraction has 5864 states and 7904 transitions. [2024-11-24 01:36:40,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 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 01:36:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7904 transitions. [2024-11-24 01:36:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-24 01:36:40,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:40,622 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:40,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:36:40,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:40,827 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:40,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1538386304, now seen corresponding path program 1 times [2024-11-24 01:36:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:40,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268513328] [2024-11-24 01:36:40,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:40,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268513328] [2024-11-24 01:36:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268513328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:41,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:41,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:36:41,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470694327] [2024-11-24 01:36:41,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:41,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:36:41,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:41,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:36:41,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:36:41,479 INFO L87 Difference]: Start difference. First operand 5864 states and 7904 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:36:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:46,442 INFO L93 Difference]: Finished difference Result 8119 states and 11299 transitions. [2024-11-24 01:36:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:36:46,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2024-11-24 01:36:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:46,455 INFO L225 Difference]: With dead ends: 8119 [2024-11-24 01:36:46,456 INFO L226 Difference]: Without dead ends: 6615 [2024-11-24 01:36:46,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:46,459 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 1716 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:46,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 1309 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-24 01:36:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6615 states. [2024-11-24 01:36:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6615 to 6615. [2024-11-24 01:36:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 6613 states have (on average 1.3096930288825042) internal successors, (8661), 6614 states have internal predecessors, (8661), 0 states have call successors, (0), 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 01:36:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 8661 transitions. [2024-11-24 01:36:46,770 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 8661 transitions. Word has length 99 [2024-11-24 01:36:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:46,770 INFO L471 AbstractCegarLoop]: Abstraction has 6615 states and 8661 transitions. [2024-11-24 01:36:46,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:36:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 8661 transitions. [2024-11-24 01:36:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:36:46,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:46,775 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-11-24 01:36:46,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:36:46,776 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:46,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:46,777 INFO L85 PathProgramCache]: Analyzing trace with hash 268330733, now seen corresponding path program 1 times [2024-11-24 01:36:46,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:46,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264322403] [2024-11-24 01:36:46,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:46,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:48,225 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 01:36:48,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264322403] [2024-11-24 01:36:48,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264322403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480626282] [2024-11-24 01:36:48,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:48,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:48,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:48,229 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:48,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:36:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:48,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 01:36:48,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:36:48,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:36:49,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480626282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:49,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:49,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 5] total 23 [2024-11-24 01:36:49,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715051872] [2024-11-24 01:36:49,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:49,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 01:36:49,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:49,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 01:36:49,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:36:49,321 INFO L87 Difference]: Start difference. First operand 6615 states and 8661 transitions. Second operand has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 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 01:36:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:54,305 INFO L93 Difference]: Finished difference Result 16957 states and 21375 transitions. [2024-11-24 01:36:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-24 01:36:54,305 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 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 103 [2024-11-24 01:36:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:54,320 INFO L225 Difference]: With dead ends: 16957 [2024-11-24 01:36:54,320 INFO L226 Difference]: Without dead ends: 12854 [2024-11-24 01:36:54,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3467 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1454, Invalid=9052, Unknown=0, NotChecked=0, Total=10506 [2024-11-24 01:36:54,331 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 18387 mSDsluCounter, 11552 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18387 SdHoareTripleChecker+Valid, 13126 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:54,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18387 Valid, 13126 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:36:54,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12854 states. [2024-11-24 01:36:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12854 to 10201. [2024-11-24 01:36:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10201 states, 10199 states have (on average 1.2562015883910187) internal successors, (12812), 10200 states have internal predecessors, (12812), 0 states have call successors, (0), 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 01:36:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10201 states to 10201 states and 12812 transitions. [2024-11-24 01:36:54,968 INFO L78 Accepts]: Start accepts. Automaton has 10201 states and 12812 transitions. Word has length 103 [2024-11-24 01:36:54,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:54,969 INFO L471 AbstractCegarLoop]: Abstraction has 10201 states and 12812 transitions. [2024-11-24 01:36:54,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 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 01:36:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 10201 states and 12812 transitions. [2024-11-24 01:36:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:36:54,972 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:54,972 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:36:54,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:36:55,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-24 01:36:55,173 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:55,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash 159932591, now seen corresponding path program 1 times [2024-11-24 01:36:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:55,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676607266] [2024-11-24 01:36:55,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:55,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:56,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:56,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676607266] [2024-11-24 01:36:56,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676607266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:56,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997174542] [2024-11-24 01:36:56,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:56,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:56,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:56,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:36:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:57,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 01:36:57,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:58,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:37:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:37:00,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997174542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:37:00,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:37:00,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 38 [2024-11-24 01:37:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814154434] [2024-11-24 01:37:00,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:37:00,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-24 01:37:00,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:00,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-24 01:37:00,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 01:37:00,516 INFO L87 Difference]: Start difference. First operand 10201 states and 12812 transitions. Second operand has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 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 01:37:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:11,697 INFO L93 Difference]: Finished difference Result 25680 states and 31646 transitions. [2024-11-24 01:37:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-24 01:37:11,697 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 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 103 [2024-11-24 01:37:11,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:11,714 INFO L225 Difference]: With dead ends: 25680 [2024-11-24 01:37:11,714 INFO L226 Difference]: Without dead ends: 20807 [2024-11-24 01:37:11,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=3517, Invalid=16789, Unknown=0, NotChecked=0, Total=20306 [2024-11-24 01:37:11,721 INFO L435 NwaCegarLoop]: 1605 mSDtfsCounter, 19298 mSDsluCounter, 27150 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19298 SdHoareTripleChecker+Valid, 28755 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:11,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19298 Valid, 28755 Invalid, 2616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 01:37:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20807 states. [2024-11-24 01:37:12,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20807 to 13791. [2024-11-24 01:37:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13791 states, 13789 states have (on average 1.2382333744288927) internal successors, (17074), 13790 states have internal predecessors, (17074), 0 states have call successors, (0), 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 01:37:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13791 states to 13791 states and 17074 transitions. [2024-11-24 01:37:12,787 INFO L78 Accepts]: Start accepts. Automaton has 13791 states and 17074 transitions. Word has length 103 [2024-11-24 01:37:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:12,787 INFO L471 AbstractCegarLoop]: Abstraction has 13791 states and 17074 transitions. [2024-11-24 01:37:12,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 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 01:37:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 13791 states and 17074 transitions. [2024-11-24 01:37:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 01:37:12,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:12,791 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:12,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:37:12,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 01:37:12,996 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:37:12,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:12,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1648355578, now seen corresponding path program 1 times [2024-11-24 01:37:12,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:12,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222256278] [2024-11-24 01:37:12,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:12,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 01:37:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222256278] [2024-11-24 01:37:14,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222256278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:37:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135160289] [2024-11-24 01:37:14,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:14,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:37:14,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:37:14,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:37:14,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:37:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:14,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-24 01:37:14,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:37:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:37:17,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:37:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:37:22,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135160289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:37:22,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:37:22,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 22] total 60 [2024-11-24 01:37:22,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500406091] [2024-11-24 01:37:22,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:37:22,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 01:37:22,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:22,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 01:37:22,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=3185, Unknown=0, NotChecked=0, Total=3540 [2024-11-24 01:37:22,639 INFO L87 Difference]: Start difference. First operand 13791 states and 17074 transitions. Second operand has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 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 01:38:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:08,232 INFO L93 Difference]: Finished difference Result 23058 states and 28244 transitions. [2024-11-24 01:38:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-24 01:38:08,233 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 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 104 [2024-11-24 01:38:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:08,252 INFO L225 Difference]: With dead ends: 23058 [2024-11-24 01:38:08,252 INFO L226 Difference]: Without dead ends: 18950 [2024-11-24 01:38:08,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14376 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=6621, Invalid=39819, Unknown=0, NotChecked=0, Total=46440 [2024-11-24 01:38:08,262 INFO L435 NwaCegarLoop]: 1643 mSDtfsCounter, 34920 mSDsluCounter, 28847 mSDsCounter, 0 mSdLazyCounter, 3145 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34920 SdHoareTripleChecker+Valid, 30490 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:08,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34920 Valid, 30490 Invalid, 3289 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [144 Valid, 3145 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 01:38:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18950 states. [2024-11-24 01:38:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18950 to 18037. [2024-11-24 01:38:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18037 states, 18035 states have (on average 1.228278347657333) internal successors, (22152), 18036 states have internal predecessors, (22152), 0 states have call successors, (0), 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 01:38:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18037 states to 18037 states and 22152 transitions. [2024-11-24 01:38:09,788 INFO L78 Accepts]: Start accepts. Automaton has 18037 states and 22152 transitions. Word has length 104 [2024-11-24 01:38:09,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:09,790 INFO L471 AbstractCegarLoop]: Abstraction has 18037 states and 22152 transitions. [2024-11-24 01:38:09,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 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 01:38:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 18037 states and 22152 transitions. [2024-11-24 01:38:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:38:09,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:09,794 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:38:09,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:38:09,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 01:38:09,997 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:09,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1812137019, now seen corresponding path program 1 times [2024-11-24 01:38:09,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:09,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397327087] [2024-11-24 01:38:09,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:09,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:12,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:12,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397327087] [2024-11-24 01:38:12,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397327087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:38:12,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328740371] [2024-11-24 01:38:12,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:12,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:12,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:12,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:12,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:38:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:13,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 01:38:13,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:15,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:38:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:17,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328740371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:38:17,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:38:17,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 14] total 52 [2024-11-24 01:38:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846505583] [2024-11-24 01:38:17,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:38:17,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-24 01:38:17,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:17,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-24 01:38:17,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2470, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 01:38:17,603 INFO L87 Difference]: Start difference. First operand 18037 states and 22152 transitions. Second operand has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:47,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:47,317 INFO L93 Difference]: Finished difference Result 36525 states and 44360 transitions. [2024-11-24 01:38:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-24 01:38:47,318 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-24 01:38:47,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:47,345 INFO L225 Difference]: With dead ends: 36525 [2024-11-24 01:38:47,345 INFO L226 Difference]: Without dead ends: 26023 [2024-11-24 01:38:47,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14627 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=6723, Invalid=38859, Unknown=0, NotChecked=0, Total=45582 [2024-11-24 01:38:47,353 INFO L435 NwaCegarLoop]: 1685 mSDtfsCounter, 20769 mSDsluCounter, 33214 mSDsCounter, 0 mSdLazyCounter, 4311 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20769 SdHoareTripleChecker+Valid, 34899 SdHoareTripleChecker+Invalid, 4501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:47,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20769 Valid, 34899 Invalid, 4501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 4311 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-24 01:38:47,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26023 states. [2024-11-24 01:38:48,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26023 to 21137. [2024-11-24 01:38:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21137 states, 21135 states have (on average 1.2229004021764844) internal successors, (25846), 21136 states have internal predecessors, (25846), 0 states have call successors, (0), 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 01:38:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21137 states to 21137 states and 25846 transitions. [2024-11-24 01:38:48,812 INFO L78 Accepts]: Start accepts. Automaton has 21137 states and 25846 transitions. Word has length 105 [2024-11-24 01:38:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:48,812 INFO L471 AbstractCegarLoop]: Abstraction has 21137 states and 25846 transitions. [2024-11-24 01:38:48,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 21137 states and 25846 transitions. [2024-11-24 01:38:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:38:48,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:48,814 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:38:48,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:38:49,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 01:38:49,019 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:49,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash -867694025, now seen corresponding path program 1 times [2024-11-24 01:38:49,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:49,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870941313] [2024-11-24 01:38:49,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:49,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:50,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:50,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870941313] [2024-11-24 01:38:50,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870941313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:38:50,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656664457] [2024-11-24 01:38:50,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:50,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:50,546 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:50,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:38:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:50,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-24 01:38:50,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:54,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:38:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:57,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656664457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:38:57,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:38:57,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 52 [2024-11-24 01:38:57,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491206253] [2024-11-24 01:38:57,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:38:57,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-24 01:38:57,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:57,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-24 01:38:57,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2369, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 01:38:57,674 INFO L87 Difference]: Start difference. First operand 21137 states and 25846 transitions. Second operand has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 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 01:39:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:07,880 INFO L93 Difference]: Finished difference Result 34085 states and 41519 transitions. [2024-11-24 01:39:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-24 01:39:07,880 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 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 105 [2024-11-24 01:39:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:07,903 INFO L225 Difference]: With dead ends: 34085 [2024-11-24 01:39:07,903 INFO L226 Difference]: Without dead ends: 22688 [2024-11-24 01:39:07,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1719, Invalid=7787, Unknown=0, NotChecked=0, Total=9506 [2024-11-24 01:39:07,910 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 18426 mSDsluCounter, 33083 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18426 SdHoareTripleChecker+Valid, 34666 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:07,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18426 Valid, 34666 Invalid, 2330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-24 01:39:07,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22688 states. [2024-11-24 01:39:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22688 to 19991. [2024-11-24 01:39:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19991 states, 19989 states have (on average 1.2179198559207565) internal successors, (24345), 19990 states have internal predecessors, (24345), 0 states have call successors, (0), 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 01:39:09,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19991 states to 19991 states and 24345 transitions. [2024-11-24 01:39:09,560 INFO L78 Accepts]: Start accepts. Automaton has 19991 states and 24345 transitions. Word has length 105 [2024-11-24 01:39:09,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:09,560 INFO L471 AbstractCegarLoop]: Abstraction has 19991 states and 24345 transitions. [2024-11-24 01:39:09,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 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 01:39:09,561 INFO L276 IsEmpty]: Start isEmpty. Operand 19991 states and 24345 transitions. [2024-11-24 01:39:09,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 01:39:09,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:09,563 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:39:09,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 01:39:09,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 01:39:09,763 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:39:09,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1706401868, now seen corresponding path program 1 times [2024-11-24 01:39:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:09,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461239663] [2024-11-24 01:39:09,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:39:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:39:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:11,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:39:11,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461239663] [2024-11-24 01:39:11,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461239663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:39:11,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949190366] [2024-11-24 01:39:11,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:39:11,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:39:11,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:39:11,611 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:39:11,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:39:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:39:11,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-24 01:39:11,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:39:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:14,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:39:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:19,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949190366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:39:19,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:39:19,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 19] total 61 [2024-11-24 01:39:19,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535753444] [2024-11-24 01:39:19,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:39:19,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-24 01:39:19,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:39:19,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-24 01:39:19,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3378, Unknown=0, NotChecked=0, Total=3660 [2024-11-24 01:39:19,592 INFO L87 Difference]: Start difference. First operand 19991 states and 24345 transitions. Second operand has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 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 01:39:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:48,921 INFO L93 Difference]: Finished difference Result 41260 states and 49867 transitions. [2024-11-24 01:39:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-24 01:39:48,922 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 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 106 [2024-11-24 01:39:48,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:48,950 INFO L225 Difference]: With dead ends: 41260 [2024-11-24 01:39:48,950 INFO L226 Difference]: Without dead ends: 36805 [2024-11-24 01:39:48,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=5074, Invalid=28598, Unknown=0, NotChecked=0, Total=33672 [2024-11-24 01:39:48,958 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 27470 mSDsluCounter, 33918 mSDsCounter, 0 mSdLazyCounter, 3908 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27470 SdHoareTripleChecker+Valid, 35544 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:48,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27470 Valid, 35544 Invalid, 4019 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [111 Valid, 3908 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-24 01:39:48,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36805 states. [2024-11-24 01:39:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36805 to 22361. [2024-11-24 01:39:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22361 states, 22359 states have (on average 1.2140972315398721) internal successors, (27146), 22360 states have internal predecessors, (27146), 0 states have call successors, (0), 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 01:39:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 27146 transitions. [2024-11-24 01:39:51,359 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 27146 transitions. Word has length 106 [2024-11-24 01:39:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:51,359 INFO L471 AbstractCegarLoop]: Abstraction has 22361 states and 27146 transitions. [2024-11-24 01:39:51,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 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 01:39:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 27146 transitions. [2024-11-24 01:39:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 01:39:51,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:51,362 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:39:51,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:39:51,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 01:39:51,562 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:39:51,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1230557169, now seen corresponding path program 1 times [2024-11-24 01:39:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:51,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310776998] [2024-11-24 01:39:51,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:39:51,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:39:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:52,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:39:52,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310776998] [2024-11-24 01:39:52,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310776998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:39:52,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343825827] [2024-11-24 01:39:52,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:39:52,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:39:52,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:39:52,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:39:52,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:39:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:39:53,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-24 01:39:53,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:39:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:56,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:40:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:04,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343825827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:40:04,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:40:04,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 23] total 64 [2024-11-24 01:40:04,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640495496] [2024-11-24 01:40:04,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:40:04,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-24 01:40:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:40:04,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-24 01:40:04,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 01:40:04,405 INFO L87 Difference]: Start difference. First operand 22361 states and 27146 transitions. Second operand has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 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 01:40:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:39,679 INFO L93 Difference]: Finished difference Result 46849 states and 57051 transitions. [2024-11-24 01:40:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-24 01:40:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 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 107 [2024-11-24 01:40:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:39,717 INFO L225 Difference]: With dead ends: 46849 [2024-11-24 01:40:39,718 INFO L226 Difference]: Without dead ends: 38309 [2024-11-24 01:40:39,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=4930, Invalid=24140, Unknown=0, NotChecked=0, Total=29070 [2024-11-24 01:40:39,727 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 30423 mSDsluCounter, 34559 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30423 SdHoareTripleChecker+Valid, 36139 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:39,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30423 Valid, 36139 Invalid, 2746 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [155 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 01:40:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38309 states. [2024-11-24 01:40:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38309 to 30081. [2024-11-24 01:40:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30081 states, 30079 states have (on average 1.2160311180557863) internal successors, (36577), 30080 states have internal predecessors, (36577), 0 states have call successors, (0), 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 01:40:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30081 states to 30081 states and 36577 transitions. [2024-11-24 01:40:43,324 INFO L78 Accepts]: Start accepts. Automaton has 30081 states and 36577 transitions. Word has length 107 [2024-11-24 01:40:43,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:43,324 INFO L471 AbstractCegarLoop]: Abstraction has 30081 states and 36577 transitions. [2024-11-24 01:40:43,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 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 01:40:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 30081 states and 36577 transitions. [2024-11-24 01:40:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 01:40:43,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:43,327 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 01:40:43,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:40:43,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 01:40:43,528 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:40:43,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:43,528 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-11-24 01:40:43,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:43,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438160968] [2024-11-24 01:40:43,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:40:43,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:40:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:40:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:45,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:40:45,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438160968] [2024-11-24 01:40:45,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438160968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:40:45,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539278515] [2024-11-24 01:40:45,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:40:45,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:45,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:40:45,701 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:40:45,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:40:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:40:45,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 01:40:45,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:40:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:48,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:40:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539278515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:40:50,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:40:50,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 16] total 51 [2024-11-24 01:40:50,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613026278] [2024-11-24 01:40:50,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:40:50,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-24 01:40:50,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:40:50,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-24 01:40:50,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2319, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 01:40:50,682 INFO L87 Difference]: Start difference. First operand 30081 states and 36577 transitions. Second operand has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:41:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:08,006 INFO L93 Difference]: Finished difference Result 95632 states and 116340 transitions. [2024-11-24 01:41:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-24 01:41:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-24 01:41:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:08,075 INFO L225 Difference]: With dead ends: 95632 [2024-11-24 01:41:08,075 INFO L226 Difference]: Without dead ends: 71221 [2024-11-24 01:41:08,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4636 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=3615, Invalid=13415, Unknown=0, NotChecked=0, Total=17030 [2024-11-24 01:41:08,090 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 27788 mSDsluCounter, 23221 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27788 SdHoareTripleChecker+Valid, 24772 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:08,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27788 Valid, 24772 Invalid, 2909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-24 01:41:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71221 states. [2024-11-24 01:41:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71221 to 40993. [2024-11-24 01:41:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40993 states, 40991 states have (on average 1.2140713815227733) internal successors, (49766), 40992 states have internal predecessors, (49766), 0 states have call successors, (0), 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 01:41:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40993 states to 40993 states and 49766 transitions. [2024-11-24 01:41:13,439 INFO L78 Accepts]: Start accepts. Automaton has 40993 states and 49766 transitions. Word has length 107 [2024-11-24 01:41:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:13,439 INFO L471 AbstractCegarLoop]: Abstraction has 40993 states and 49766 transitions. [2024-11-24 01:41:13,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:41:13,440 INFO L276 IsEmpty]: Start isEmpty. Operand 40993 states and 49766 transitions. [2024-11-24 01:41:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 01:41:13,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:13,442 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 01:41:13,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 01:41:13,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:41:13,644 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:13,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1782264045, now seen corresponding path program 1 times [2024-11-24 01:41:13,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:13,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274352682] [2024-11-24 01:41:13,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:13,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:41:14,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:14,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274352682] [2024-11-24 01:41:14,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274352682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:41:14,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146318245] [2024-11-24 01:41:14,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:14,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:41:14,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:41:14,666 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:41:14,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:41:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:14,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 01:41:14,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:41:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 52 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:41:16,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:41:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:41:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146318245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:41:18,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:41:18,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 35 [2024-11-24 01:41:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448939540] [2024-11-24 01:41:18,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:41:18,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-24 01:41:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:18,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-24 01:41:18,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:41:18,329 INFO L87 Difference]: Start difference. First operand 40993 states and 49766 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 01:41:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:28,190 INFO L93 Difference]: Finished difference Result 102217 states and 123406 transitions. [2024-11-24 01:41:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-24 01:41:28,190 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 107 [2024-11-24 01:41:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:28,257 INFO L225 Difference]: With dead ends: 102217 [2024-11-24 01:41:28,257 INFO L226 Difference]: Without dead ends: 69746 [2024-11-24 01:41:28,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=868, Invalid=3164, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 01:41:28,280 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 21473 mSDsluCounter, 14135 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21473 SdHoareTripleChecker+Valid, 15707 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:28,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21473 Valid, 15707 Invalid, 848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:41:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69746 states. [2024-11-24 01:41:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69746 to 40063. [2024-11-24 01:41:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40063 states, 40061 states have (on average 1.2063603005416739) internal successors, (48328), 40062 states have internal predecessors, (48328), 0 states have call successors, (0), 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 01:41:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40063 states to 40063 states and 48328 transitions. [2024-11-24 01:41:33,537 INFO L78 Accepts]: Start accepts. Automaton has 40063 states and 48328 transitions. Word has length 107 [2024-11-24 01:41:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:33,537 INFO L471 AbstractCegarLoop]: Abstraction has 40063 states and 48328 transitions. [2024-11-24 01:41:33,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 01:41:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 40063 states and 48328 transitions. [2024-11-24 01:41:33,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 01:41:33,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:33,539 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 01:41:33,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 01:41:33,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:41:33,740 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:33,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1616506483, now seen corresponding path program 1 times [2024-11-24 01:41:33,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:33,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428022352] [2024-11-24 01:41:33,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:33,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:41:34,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:34,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428022352] [2024-11-24 01:41:34,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428022352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:41:34,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318377121] [2024-11-24 01:41:34,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:34,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:41:34,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:41:34,692 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:41:34,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_920daefd-082b-466e-a218-19b430e02005/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:41:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:34,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 01:41:34,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:41:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:41:36,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:41:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:41:38,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318377121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:41:38,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:41:38,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 35 [2024-11-24 01:41:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985765228] [2024-11-24 01:41:38,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:41:38,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-24 01:41:38,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:38,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-24 01:41:38,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:41:38,352 INFO L87 Difference]: Start difference. First operand 40063 states and 48328 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)