./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label57.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label57.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b997a9e098a2f6fc09702557a2623d5325541f100fcede5aee127c74480bcb96 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:49:35,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:49:36,073 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:49:36,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:49:36,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:49:36,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:49:36,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:49:36,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:49:36,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:49:36,125 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:49:36,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:49:36,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:49:36,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:49:36,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:49:36,126 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:49:36,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:49:36,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:49:36,127 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:49:36,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:49:36,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:49:36,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:49:36,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:49:36,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:49:36,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:49:36,127 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:49:36,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:49:36,128 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:49:36,128 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:49:36,128 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:49:36,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:49:36,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:49:36,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:49:36,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:36,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:49:36,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:49:36,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:49:36,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:49:36,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:36,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:49:36,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:49:36,132 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:49:36,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:49:36,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:49:36,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:49:36,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:49:36,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:49:36,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:49:36,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:49:36,133 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_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b997a9e098a2f6fc09702557a2623d5325541f100fcede5aee127c74480bcb96 [2024-11-28 02:49:36,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:49:36,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:49:36,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:49:36,455 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:49:36,455 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:49:36,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem19_label57.c [2024-11-28 02:49:39,414 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/data/fc5b9157b/cb715492657d42a783898f4c10ee968e/FLAGd05be0b7e [2024-11-28 02:49:40,152 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:49:40,153 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/sv-benchmarks/c/eca-rers2012/Problem19_label57.c [2024-11-28 02:49:40,223 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/data/fc5b9157b/cb715492657d42a783898f4c10ee968e/FLAGd05be0b7e [2024-11-28 02:49:40,246 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/data/fc5b9157b/cb715492657d42a783898f4c10ee968e [2024-11-28 02:49:40,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:49:40,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:49:40,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:49:40,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:49:40,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:49:40,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:40" (1/1) ... [2024-11-28 02:49:40,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ae97c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:40, skipping insertion in model container [2024-11-28 02:49:40,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:40" (1/1) ... [2024-11-28 02:49:40,450 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:49:40,757 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_10816d29-f45f-4d28-9d47-e0296591b04f/sv-benchmarks/c/eca-rers2012/Problem19_label57.c[7333,7346] [2024-11-28 02:49:42,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:49:42,176 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:49:42,215 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_10816d29-f45f-4d28-9d47-e0296591b04f/sv-benchmarks/c/eca-rers2012/Problem19_label57.c[7333,7346] [2024-11-28 02:49:43,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:49:43,182 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:49:43,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43 WrapperNode [2024-11-28 02:49:43,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:49:43,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:49:43,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:49:43,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:49:43,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:43,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:44,181 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9430 [2024-11-28 02:49:44,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:49:44,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:49:44,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:49:44,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:49:44,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:44,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:44,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:44,680 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:49:44,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:44,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:44,997 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:45,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:45,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:45,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:45,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:45,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:49:45,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:49:45,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:49:45,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:49:45,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (1/1) ... [2024-11-28 02:49:45,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:45,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:45,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:49:45,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:49:45,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:49:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:49:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:49:45,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:49:45,415 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:49:45,417 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:49:56,340 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-11-28 02:49:56,341 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:49:56,410 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:49:56,410 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:49:56,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:56 BoogieIcfgContainer [2024-11-28 02:49:56,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:49:56,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:49:56,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:49:56,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:49:56,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:49:40" (1/3) ... [2024-11-28 02:49:56,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10534cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:56, skipping insertion in model container [2024-11-28 02:49:56,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:43" (2/3) ... [2024-11-28 02:49:56,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10534cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:56, skipping insertion in model container [2024-11-28 02:49:56,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:56" (3/3) ... [2024-11-28 02:49:56,426 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem19_label57.c [2024-11-28 02:49:56,443 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:49:56,448 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem19_label57.c that has 1 procedures, 1748 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:49:56,574 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:49:56,591 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;@7b9516fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:49:56,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:49:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:56,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 02:49:56,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:56,609 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:56,610 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:56,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2158734, now seen corresponding path program 1 times [2024-11-28 02:49:56,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:56,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838986085] [2024-11-28 02:49:56,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:56,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:57,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:57,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838986085] [2024-11-28 02:49:57,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838986085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:57,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:57,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:49:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952806489] [2024-11-28 02:49:57,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:57,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:49:57,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:57,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:49:57,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:49:57,178 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:06,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:06,098 INFO L93 Difference]: Finished difference Result 4957 states and 9398 transitions. [2024-11-28 02:50:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:50:06,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2024-11-28 02:50:06,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:06,128 INFO L225 Difference]: With dead ends: 4957 [2024-11-28 02:50:06,128 INFO L226 Difference]: Without dead ends: 3129 [2024-11-28 02:50:06,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:50:06,138 INFO L435 NwaCegarLoop]: 1373 mSDtfsCounter, 1570 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 1517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1517 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:06,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 1595 Invalid, 5861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1517 Valid, 4344 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-28 02:50:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2024-11-28 02:50:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3108. [2024-11-28 02:50:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 3107 states have (on average 1.6012230447376892) internal successors, (4975), 3107 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4975 transitions. [2024-11-28 02:50:06,306 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4975 transitions. Word has length 56 [2024-11-28 02:50:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:06,308 INFO L471 AbstractCegarLoop]: Abstraction has 3108 states and 4975 transitions. [2024-11-28 02:50:06,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4975 transitions. [2024-11-28 02:50:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 02:50:06,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:06,313 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:06,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:50:06,314 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:06,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash 839123000, now seen corresponding path program 1 times [2024-11-28 02:50:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:06,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445383227] [2024-11-28 02:50:06,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:06,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:06,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445383227] [2024-11-28 02:50:06,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445383227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:06,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:06,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:50:06,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626138155] [2024-11-28 02:50:06,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:06,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:50:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:06,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:50:06,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:50:06,964 INFO L87 Difference]: Start difference. First operand 3108 states and 4975 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:19,333 INFO L93 Difference]: Finished difference Result 10359 states and 16187 transitions. [2024-11-28 02:50:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:50:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-11-28 02:50:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:19,360 INFO L225 Difference]: With dead ends: 10359 [2024-11-28 02:50:19,361 INFO L226 Difference]: Without dead ends: 7253 [2024-11-28 02:50:19,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:50:19,366 INFO L435 NwaCegarLoop]: 1024 mSDtfsCounter, 4323 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9504 mSolverCounterSat, 1498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 11002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 9504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:19,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4323 Valid, 1292 Invalid, 11002 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1498 Valid, 9504 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2024-11-28 02:50:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2024-11-28 02:50:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 7249. [2024-11-28 02:50:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 7248 states have (on average 1.4503311258278146) internal successors, (10512), 7248 states have internal predecessors, (10512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 10512 transitions. [2024-11-28 02:50:19,521 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 10512 transitions. Word has length 123 [2024-11-28 02:50:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:19,521 INFO L471 AbstractCegarLoop]: Abstraction has 7249 states and 10512 transitions. [2024-11-28 02:50:19,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 10512 transitions. [2024-11-28 02:50:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-28 02:50:19,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:19,529 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:19,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:50:19,529 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:19,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:19,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1842500793, now seen corresponding path program 1 times [2024-11-28 02:50:19,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:19,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849742035] [2024-11-28 02:50:19,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:19,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:50:20,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:20,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849742035] [2024-11-28 02:50:20,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849742035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:20,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:20,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:50:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017143303] [2024-11-28 02:50:20,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:20,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:50:20,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:20,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:50:20,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:50:20,934 INFO L87 Difference]: Start difference. First operand 7249 states and 10512 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 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) [2024-11-28 02:50:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:32,014 INFO L93 Difference]: Finished difference Result 17269 states and 24867 transitions. [2024-11-28 02:50:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:50:32,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 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 330 [2024-11-28 02:50:32,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:32,052 INFO L225 Difference]: With dead ends: 17269 [2024-11-28 02:50:32,053 INFO L226 Difference]: Without dead ends: 11387 [2024-11-28 02:50:32,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:50:32,060 INFO L435 NwaCegarLoop]: 1803 mSDtfsCounter, 3756 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 9885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:32,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2157 Invalid, 9885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2024-11-28 02:50:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11387 states. [2024-11-28 02:50:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11387 to 11367. [2024-11-28 02:50:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.3286116487770543) internal successors, (15101), 11366 states have internal predecessors, (15101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:32,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15101 transitions. [2024-11-28 02:50:32,263 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15101 transitions. Word has length 330 [2024-11-28 02:50:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:32,264 INFO L471 AbstractCegarLoop]: Abstraction has 11367 states and 15101 transitions. [2024-11-28 02:50:32,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 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) [2024-11-28 02:50:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15101 transitions. [2024-11-28 02:50:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-28 02:50:32,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:32,271 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:32,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:50:32,272 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:32,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:32,274 INFO L85 PathProgramCache]: Analyzing trace with hash -863817825, now seen corresponding path program 1 times [2024-11-28 02:50:32,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:32,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961509620] [2024-11-28 02:50:32,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:32,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 02:50:33,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:33,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961509620] [2024-11-28 02:50:33,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961509620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:33,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:33,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:50:33,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312301460] [2024-11-28 02:50:33,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:33,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:50:33,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:33,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:50:33,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:50:33,162 INFO L87 Difference]: Start difference. First operand 11367 states and 15101 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:41,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:41,090 INFO L93 Difference]: Finished difference Result 20033 states and 27483 transitions. [2024-11-28 02:50:41,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:50:41,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 358 [2024-11-28 02:50:41,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:41,123 INFO L225 Difference]: With dead ends: 20033 [2024-11-28 02:50:41,124 INFO L226 Difference]: Without dead ends: 11367 [2024-11-28 02:50:41,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:50:41,133 INFO L435 NwaCegarLoop]: 1775 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7325 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 7333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:41,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2117 Invalid, 7333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7325 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-28 02:50:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2024-11-28 02:50:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 11367. [2024-11-28 02:50:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.3274678866795706) internal successors, (15088), 11366 states have internal predecessors, (15088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15088 transitions. [2024-11-28 02:50:41,340 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15088 transitions. Word has length 358 [2024-11-28 02:50:41,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:41,341 INFO L471 AbstractCegarLoop]: Abstraction has 11367 states and 15088 transitions. [2024-11-28 02:50:41,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:41,342 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15088 transitions. [2024-11-28 02:50:41,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2024-11-28 02:50:41,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:41,352 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:41,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:50:41,352 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:41,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:41,353 INFO L85 PathProgramCache]: Analyzing trace with hash -588179740, now seen corresponding path program 1 times [2024-11-28 02:50:41,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:41,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477673639] [2024-11-28 02:50:41,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:41,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:42,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:42,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477673639] [2024-11-28 02:50:42,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477673639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:42,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:42,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:50:42,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112808778] [2024-11-28 02:50:42,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:42,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:50:42,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:42,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:50:42,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:50:42,080 INFO L87 Difference]: Start difference. First operand 11367 states and 15088 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:49,232 INFO L93 Difference]: Finished difference Result 25557 states and 36131 transitions. [2024-11-28 02:50:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:50:49,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 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 543 [2024-11-28 02:50:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:49,274 INFO L225 Difference]: With dead ends: 25557 [2024-11-28 02:50:49,274 INFO L226 Difference]: Without dead ends: 16922 [2024-11-28 02:50:49,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:50:49,285 INFO L435 NwaCegarLoop]: 2759 mSDtfsCounter, 1465 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4068 mSolverCounterSat, 1816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 5884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1816 IncrementalHoareTripleChecker+Valid, 4068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:49,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2936 Invalid, 5884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1816 Valid, 4068 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-28 02:50:49,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16922 states. [2024-11-28 02:50:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16922 to 16876. [2024-11-28 02:50:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16876 states, 16875 states have (on average 1.2959407407407408) internal successors, (21869), 16875 states have internal predecessors, (21869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16876 states to 16876 states and 21869 transitions. [2024-11-28 02:50:49,519 INFO L78 Accepts]: Start accepts. Automaton has 16876 states and 21869 transitions. Word has length 543 [2024-11-28 02:50:49,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:49,522 INFO L471 AbstractCegarLoop]: Abstraction has 16876 states and 21869 transitions. [2024-11-28 02:50:49,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 16876 states and 21869 transitions. [2024-11-28 02:50:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2024-11-28 02:50:49,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:49,541 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:49,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:50:49,541 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:49,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1265174184, now seen corresponding path program 1 times [2024-11-28 02:50:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471850488] [2024-11-28 02:50:49,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 129 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:50,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:50,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471850488] [2024-11-28 02:50:50,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471850488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:50,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887570114] [2024-11-28 02:50:50,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:50,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:50,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:50,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:50,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:50:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:51,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:50:51,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:51,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:50:51,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887570114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:51,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:50:51,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-28 02:50:51,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308813308] [2024-11-28 02:50:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:51,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:50:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:51,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:50:51,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:50:51,472 INFO L87 Difference]: Start difference. First operand 16876 states and 21869 transitions. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:58,602 INFO L93 Difference]: Finished difference Result 43303 states and 57896 transitions. [2024-11-28 02:50:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:50:58,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 612 [2024-11-28 02:50:58,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:58,662 INFO L225 Difference]: With dead ends: 43303 [2024-11-28 02:50:58,662 INFO L226 Difference]: Without dead ends: 29159 [2024-11-28 02:50:58,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:50:58,679 INFO L435 NwaCegarLoop]: 707 mSDtfsCounter, 2533 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 5526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:58,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 816 Invalid, 5526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-28 02:50:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29159 states. [2024-11-28 02:50:58,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29159 to 29155. [2024-11-28 02:50:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29155 states, 29154 states have (on average 1.297592097139329) internal successors, (37830), 29154 states have internal predecessors, (37830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:59,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29155 states to 29155 states and 37830 transitions. [2024-11-28 02:50:59,063 INFO L78 Accepts]: Start accepts. Automaton has 29155 states and 37830 transitions. Word has length 612 [2024-11-28 02:50:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:59,064 INFO L471 AbstractCegarLoop]: Abstraction has 29155 states and 37830 transitions. [2024-11-28 02:50:59,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:50:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 29155 states and 37830 transitions. [2024-11-28 02:50:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2024-11-28 02:50:59,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:59,085 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:59,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:50:59,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:59,290 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:59,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash -309330290, now seen corresponding path program 1 times [2024-11-28 02:50:59,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:59,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938154730] [2024-11-28 02:50:59,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:59,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 107 proven. 40 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-28 02:51:01,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:01,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938154730] [2024-11-28 02:51:01,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938154730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:01,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355886219] [2024-11-28 02:51:01,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:01,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:01,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:01,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:01,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:51:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:01,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:51:01,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:51:01,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:51:01,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355886219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:01,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:51:01,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-28 02:51:01,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409347009] [2024-11-28 02:51:01,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:01,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:51:01,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:01,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:51:01,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:51:01,600 INFO L87 Difference]: Start difference. First operand 29155 states and 37830 transitions. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:09,129 INFO L93 Difference]: Finished difference Result 77415 states and 102356 transitions. [2024-11-28 02:51:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:51:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 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 665 [2024-11-28 02:51:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:09,215 INFO L225 Difference]: With dead ends: 77415 [2024-11-28 02:51:09,215 INFO L226 Difference]: Without dead ends: 50992 [2024-11-28 02:51:09,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:51:09,239 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1544 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:09,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1676 Invalid, 5631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-28 02:51:09,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50992 states. [2024-11-28 02:51:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50992 to 46896. [2024-11-28 02:51:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46896 states, 46895 states have (on average 1.2159505277748162) internal successors, (57022), 46895 states have internal predecessors, (57022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46896 states to 46896 states and 57022 transitions. [2024-11-28 02:51:09,796 INFO L78 Accepts]: Start accepts. Automaton has 46896 states and 57022 transitions. Word has length 665 [2024-11-28 02:51:09,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:09,798 INFO L471 AbstractCegarLoop]: Abstraction has 46896 states and 57022 transitions. [2024-11-28 02:51:09,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:09,799 INFO L276 IsEmpty]: Start isEmpty. Operand 46896 states and 57022 transitions. [2024-11-28 02:51:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2024-11-28 02:51:09,806 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:09,807 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:09,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:51:10,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:10,009 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:10,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1928337988, now seen corresponding path program 1 times [2024-11-28 02:51:10,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:10,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047210740] [2024-11-28 02:51:10,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:10,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-28 02:51:10,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047210740] [2024-11-28 02:51:10,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047210740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:10,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:51:10,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:51:10,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271497084] [2024-11-28 02:51:10,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:10,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:51:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:10,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:51:10,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:51:10,746 INFO L87 Difference]: Start difference. First operand 46896 states and 57022 transitions. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:23,735 INFO L93 Difference]: Finished difference Result 151284 states and 187638 transitions. [2024-11-28 02:51:23,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:51:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 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 755 [2024-11-28 02:51:23,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:23,845 INFO L225 Difference]: With dead ends: 151284 [2024-11-28 02:51:23,846 INFO L226 Difference]: Without dead ends: 107120 [2024-11-28 02:51:23,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:51:23,884 INFO L435 NwaCegarLoop]: 708 mSDtfsCounter, 3337 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 8622 mSolverCounterSat, 3023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3337 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 11645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3023 IncrementalHoareTripleChecker+Valid, 8622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:23,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3337 Valid, 1028 Invalid, 11645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3023 Valid, 8622 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2024-11-28 02:51:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107120 states. [2024-11-28 02:51:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107120 to 102938. [2024-11-28 02:51:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102938 states, 102937 states have (on average 1.1985389121501502) internal successors, (123374), 102937 states have internal predecessors, (123374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102938 states to 102938 states and 123374 transitions. [2024-11-28 02:51:25,633 INFO L78 Accepts]: Start accepts. Automaton has 102938 states and 123374 transitions. Word has length 755 [2024-11-28 02:51:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:25,634 INFO L471 AbstractCegarLoop]: Abstraction has 102938 states and 123374 transitions. [2024-11-28 02:51:25,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:25,635 INFO L276 IsEmpty]: Start isEmpty. Operand 102938 states and 123374 transitions. [2024-11-28 02:51:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2024-11-28 02:51:25,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:25,654 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:25,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:51:25,655 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:25,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1987763485, now seen corresponding path program 1 times [2024-11-28 02:51:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:25,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606121749] [2024-11-28 02:51:25,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:25,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-28 02:51:26,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606121749] [2024-11-28 02:51:26,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606121749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:26,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:51:26,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:51:26,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209006037] [2024-11-28 02:51:26,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:26,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:51:26,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:26,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:51:26,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:51:26,531 INFO L87 Difference]: Start difference. First operand 102938 states and 123374 transitions. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 2 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:34,279 INFO L93 Difference]: Finished difference Result 238646 states and 286756 transitions. [2024-11-28 02:51:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:51:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 2 states have internal predecessors, (602), 0 states have call successors, (0), 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 886 [2024-11-28 02:51:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:34,459 INFO L225 Difference]: With dead ends: 238646 [2024-11-28 02:51:34,459 INFO L226 Difference]: Without dead ends: 138440 [2024-11-28 02:51:34,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:51:34,506 INFO L435 NwaCegarLoop]: 666 mSDtfsCounter, 1372 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 3923 mSolverCounterSat, 2088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2088 IncrementalHoareTripleChecker+Valid, 3923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:34,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 710 Invalid, 6011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2088 Valid, 3923 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-28 02:51:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138440 states. [2024-11-28 02:51:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138440 to 137062. [2024-11-28 02:51:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137062 states, 137061 states have (on average 1.1735942390614398) internal successors, (160854), 137061 states have internal predecessors, (160854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137062 states to 137062 states and 160854 transitions. [2024-11-28 02:51:37,210 INFO L78 Accepts]: Start accepts. Automaton has 137062 states and 160854 transitions. Word has length 886 [2024-11-28 02:51:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:37,211 INFO L471 AbstractCegarLoop]: Abstraction has 137062 states and 160854 transitions. [2024-11-28 02:51:37,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 2 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 137062 states and 160854 transitions. [2024-11-28 02:51:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2024-11-28 02:51:37,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:37,246 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:37,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:51:37,249 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:37,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash 866031201, now seen corresponding path program 1 times [2024-11-28 02:51:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800598054] [2024-11-28 02:51:37,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 238 proven. 419 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-28 02:51:39,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:39,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800598054] [2024-11-28 02:51:39,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800598054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:39,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382972053] [2024-11-28 02:51:39,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:39,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:39,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:39,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:39,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:51:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:39,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:51:39,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-11-28 02:51:39,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:51:39,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382972053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:39,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:51:39,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 02:51:39,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740796357] [2024-11-28 02:51:39,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:39,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:51:39,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:39,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:51:39,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:51:39,982 INFO L87 Difference]: Start difference. First operand 137062 states and 160854 transitions. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:47,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:47,287 INFO L93 Difference]: Finished difference Result 320540 states and 374676 transitions. [2024-11-28 02:51:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:51:47,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 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 916 [2024-11-28 02:51:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:47,459 INFO L225 Difference]: With dead ends: 320540 [2024-11-28 02:51:47,459 INFO L226 Difference]: Without dead ends: 184845 [2024-11-28 02:51:47,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:51:47,736 INFO L435 NwaCegarLoop]: 2632 mSDtfsCounter, 1620 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 3707 mSolverCounterSat, 1586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 5293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1586 IncrementalHoareTripleChecker+Valid, 3707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:47,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 2768 Invalid, 5293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1586 Valid, 3707 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-28 02:51:47,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184845 states. [2024-11-28 02:51:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184845 to 179369. [2024-11-28 02:51:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179369 states, 179368 states have (on average 1.1187558538869808) internal successors, (200669), 179368 states have internal predecessors, (200669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179369 states to 179369 states and 200669 transitions. [2024-11-28 02:51:49,934 INFO L78 Accepts]: Start accepts. Automaton has 179369 states and 200669 transitions. Word has length 916 [2024-11-28 02:51:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:49,936 INFO L471 AbstractCegarLoop]: Abstraction has 179369 states and 200669 transitions. [2024-11-28 02:51:49,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 179369 states and 200669 transitions. [2024-11-28 02:51:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2024-11-28 02:51:49,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:49,966 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:49,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:51:50,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:50,166 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:50,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:50,167 INFO L85 PathProgramCache]: Analyzing trace with hash 423132620, now seen corresponding path program 1 times [2024-11-28 02:51:50,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:50,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247432809] [2024-11-28 02:51:50,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:50,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-11-28 02:51:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247432809] [2024-11-28 02:51:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247432809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:51,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:51:51,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:51:51,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660130203] [2024-11-28 02:51:51,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:51,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:51:51,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:51,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:51:51,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:51:51,871 INFO L87 Difference]: Start difference. First operand 179369 states and 200669 transitions. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:00,563 INFO L93 Difference]: Finished difference Result 409291 states and 460622 transitions. [2024-11-28 02:52:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:52:00,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 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 1014 [2024-11-28 02:52:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:01,158 INFO L225 Difference]: With dead ends: 409291 [2024-11-28 02:52:01,158 INFO L226 Difference]: Without dead ends: 232654 [2024-11-28 02:52:01,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:52:01,204 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 1557 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 4237 mSolverCounterSat, 2017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 6254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2017 IncrementalHoareTripleChecker+Valid, 4237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:01,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 900 Invalid, 6254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2017 Valid, 4237 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-28 02:52:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232654 states. [2024-11-28 02:52:03,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232654 to 202554. [2024-11-28 02:52:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202554 states, 202553 states have (on average 1.135633636628438) internal successors, (230026), 202553 states have internal predecessors, (230026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:03,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202554 states to 202554 states and 230026 transitions. [2024-11-28 02:52:03,515 INFO L78 Accepts]: Start accepts. Automaton has 202554 states and 230026 transitions. Word has length 1014 [2024-11-28 02:52:03,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:03,516 INFO L471 AbstractCegarLoop]: Abstraction has 202554 states and 230026 transitions. [2024-11-28 02:52:03,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 202554 states and 230026 transitions. [2024-11-28 02:52:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2024-11-28 02:52:03,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:03,525 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:03,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:52:03,526 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:03,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:03,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1820671433, now seen corresponding path program 1 times [2024-11-28 02:52:03,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:03,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248432086] [2024-11-28 02:52:03,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:03,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 613 proven. 485 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-28 02:52:06,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:06,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248432086] [2024-11-28 02:52:06,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248432086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:06,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014770188] [2024-11-28 02:52:06,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:06,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:06,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:06,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:06,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:52:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:07,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:52:07,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2024-11-28 02:52:07,437 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014770188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:07,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 02:52:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484163657] [2024-11-28 02:52:07,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:07,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:52:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:07,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:52:07,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:52:07,440 INFO L87 Difference]: Start difference. First operand 202554 states and 230026 transitions. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:15,205 INFO L93 Difference]: Finished difference Result 436505 states and 496926 transitions. [2024-11-28 02:52:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:52:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 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 1038 [2024-11-28 02:52:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:15,423 INFO L225 Difference]: With dead ends: 436505 [2024-11-28 02:52:15,423 INFO L226 Difference]: Without dead ends: 236683 [2024-11-28 02:52:15,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:52:15,456 INFO L435 NwaCegarLoop]: 1169 mSDtfsCounter, 1464 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 4547 mSolverCounterSat, 736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 5283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 736 IncrementalHoareTripleChecker+Valid, 4547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:15,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1327 Invalid, 5283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [736 Valid, 4547 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 02:52:15,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236683 states. [2024-11-28 02:52:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236683 to 227123. [2024-11-28 02:52:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227123 states, 227122 states have (on average 1.1064405914002167) internal successors, (251297), 227122 states have internal predecessors, (251297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227123 states to 227123 states and 251297 transitions. [2024-11-28 02:52:17,938 INFO L78 Accepts]: Start accepts. Automaton has 227123 states and 251297 transitions. Word has length 1038 [2024-11-28 02:52:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:17,939 INFO L471 AbstractCegarLoop]: Abstraction has 227123 states and 251297 transitions. [2024-11-28 02:52:17,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 227123 states and 251297 transitions. [2024-11-28 02:52:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2024-11-28 02:52:17,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:17,957 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:17,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:52:18,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:18,158 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:18,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash -834509213, now seen corresponding path program 1 times [2024-11-28 02:52:18,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:18,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016124060] [2024-11-28 02:52:18,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:18,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1441 backedges. 703 proven. 579 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-28 02:52:20,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016124060] [2024-11-28 02:52:20,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016124060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530379822] [2024-11-28 02:52:20,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:20,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:20,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:20,879 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:20,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10816d29-f45f-4d28-9d47-e0296591b04f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:52:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:21,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:52:21,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1441 backedges. 980 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-11-28 02:52:21,671 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:21,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530379822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:21,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:21,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 02:52:21,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572533211] [2024-11-28 02:52:21,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:21,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:52:21,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:21,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:52:21,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:21,678 INFO L87 Difference]: Start difference. First operand 227123 states and 251297 transitions. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:30,425 INFO L93 Difference]: Finished difference Result 522577 states and 580580 transitions. [2024-11-28 02:52:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:52:30,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 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 1130 [2024-11-28 02:52:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:30,678 INFO L225 Difference]: With dead ends: 522577 [2024-11-28 02:52:30,678 INFO L226 Difference]: Without dead ends: 298186 [2024-11-28 02:52:30,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:30,720 INFO L435 NwaCegarLoop]: 1381 mSDtfsCounter, 1345 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4204 mSolverCounterSat, 1657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1657 IncrementalHoareTripleChecker+Valid, 4204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:30,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 1499 Invalid, 5861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1657 Valid, 4204 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-28 02:52:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298186 states.