./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b954f9d8b4ab9030eea8f5c4186ef19ab45ad4620470fe362259155373d879e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:49:26,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:49:27,069 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:49:27,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:49:27,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:49:27,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:49:27,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:49:27,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:49:27,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:49:27,125 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:49:27,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:49:27,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:49:27,127 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:49:27,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:49:27,128 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:49:27,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:49:27,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:49:27,129 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:49:27,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:49:27,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:49:27,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:49:27,129 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:49:27,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:49:27,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:49:27,130 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:49:27,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:49:27,130 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:49:27,130 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:49:27,130 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:49:27,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:49:27,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:49:27,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:49:27,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:49:27,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:49:27,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:49:27,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:49:27,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:49:27,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:49:27,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:49:27,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:49:27,133 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:49:27,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:49:27,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:49:27,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:49:27,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:49:27,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:49:27,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:49:27,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:49:27,134 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_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b954f9d8b4ab9030eea8f5c4186ef19ab45ad4620470fe362259155373d879e [2024-11-24 01:49:27,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:49:27,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:49:27,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:49:27,486 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:49:27,487 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:49:27,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-24 01:49:30,590 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/data/fbae04420/da4cc31a8eda410785a4a5be56022cd8/FLAGb83c9e9ee [2024-11-24 01:49:30,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:49:30,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-24 01:49:30,966 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/data/fbae04420/da4cc31a8eda410785a4a5be56022cd8/FLAGb83c9e9ee [2024-11-24 01:49:30,982 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/data/fbae04420/da4cc31a8eda410785a4a5be56022cd8 [2024-11-24 01:49:30,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:49:30,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:49:30,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:49:30,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:49:30,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:49:30,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:49:30" (1/1) ... [2024-11-24 01:49:30,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1370ff5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:30, skipping insertion in model container [2024-11-24 01:49:30,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:49:30" (1/1) ... [2024-11-24 01:49:31,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:49:31,280 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_9966591c-51e1-460e-9366-02be6f98ce48/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2024-11-24 01:49:31,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:49:31,348 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:49:31,396 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_9966591c-51e1-460e-9366-02be6f98ce48/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2024-11-24 01:49:31,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:49:31,454 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:49:31,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31 WrapperNode [2024-11-24 01:49:31,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:49:31,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:49:31,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:49:31,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:49:31,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,520 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 457 [2024-11-24 01:49:31,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:49:31,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:49:31,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:49:31,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:49:31,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,551 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:49:31,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,559 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:49:31,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:49:31,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:49:31,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:49:31,585 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (1/1) ... [2024-11-24 01:49:31,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:49:31,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:49:31,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:49:31,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:49:31,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:49:31,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:49:31,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:49:31,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:49:31,834 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:49:31,836 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:49:32,468 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-24 01:49:32,468 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:49:32,483 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:49:32,486 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:49:32,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:49:32 BoogieIcfgContainer [2024-11-24 01:49:32,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:49:32,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:49:32,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:49:32,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:49:32,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:49:30" (1/3) ... [2024-11-24 01:49:32,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bf1833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:49:32, skipping insertion in model container [2024-11-24 01:49:32,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:31" (2/3) ... [2024-11-24 01:49:32,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bf1833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:49:32, skipping insertion in model container [2024-11-24 01:49:32,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:49:32" (3/3) ... [2024-11-24 01:49:32,498 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-24 01:49:32,516 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:49:32,518 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c that has 1 procedures, 105 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 01:49:32,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:49:32,600 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;@7c14ce1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:49:32,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:49:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 103 states have (on average 1.6990291262135921) internal successors, (175), 104 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:32,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-24 01:49:32,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:32,618 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] [2024-11-24 01:49:32,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:32,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2024-11-24 01:49:32,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:32,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955140549] [2024-11-24 01:49:32,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:33,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:33,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955140549] [2024-11-24 01:49:33,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955140549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:33,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:33,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:33,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037642215] [2024-11-24 01:49:33,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:33,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:33,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:33,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:33,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:33,249 INFO L87 Difference]: Start difference. First operand has 105 states, 103 states have (on average 1.6990291262135921) internal successors, (175), 104 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:33,323 INFO L93 Difference]: Finished difference Result 250 states and 403 transitions. [2024-11-24 01:49:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:33,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-24 01:49:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:33,339 INFO L225 Difference]: With dead ends: 250 [2024-11-24 01:49:33,341 INFO L226 Difference]: Without dead ends: 166 [2024-11-24 01:49:33,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:33,348 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 129 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:33,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 393 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-24 01:49:33,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2024-11-24 01:49:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.5030674846625767) internal successors, (245), 163 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 245 transitions. [2024-11-24 01:49:33,398 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 245 transitions. Word has length 48 [2024-11-24 01:49:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:33,398 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 245 transitions. [2024-11-24 01:49:33,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 245 transitions. [2024-11-24 01:49:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-24 01:49:33,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:33,400 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] [2024-11-24 01:49:33,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:49:33,401 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:33,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 809542357, now seen corresponding path program 1 times [2024-11-24 01:49:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:33,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737599293] [2024-11-24 01:49:33,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:33,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:33,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:33,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737599293] [2024-11-24 01:49:33,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737599293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:33,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:33,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:33,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413547188] [2024-11-24 01:49:33,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:33,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:33,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:33,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:33,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:33,646 INFO L87 Difference]: Start difference. First operand 164 states and 245 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:33,701 INFO L93 Difference]: Finished difference Result 406 states and 629 transitions. [2024-11-24 01:49:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:33,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-24 01:49:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:33,704 INFO L225 Difference]: With dead ends: 406 [2024-11-24 01:49:33,704 INFO L226 Difference]: Without dead ends: 269 [2024-11-24 01:49:33,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:33,706 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 103 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:33,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-24 01:49:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2024-11-24 01:49:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5338345864661653) internal successors, (408), 266 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 408 transitions. [2024-11-24 01:49:33,747 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 408 transitions. Word has length 48 [2024-11-24 01:49:33,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:33,748 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 408 transitions. [2024-11-24 01:49:33,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 408 transitions. [2024-11-24 01:49:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 01:49:33,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:33,749 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] [2024-11-24 01:49:33,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:49:33,750 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:33,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:33,754 INFO L85 PathProgramCache]: Analyzing trace with hash 981236370, now seen corresponding path program 1 times [2024-11-24 01:49:33,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:33,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799223623] [2024-11-24 01:49:33,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:33,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799223623] [2024-11-24 01:49:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799223623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:33,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936540486] [2024-11-24 01:49:33,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:33,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:33,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:33,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:33,927 INFO L87 Difference]: Start difference. First operand 267 states and 408 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:33,960 INFO L93 Difference]: Finished difference Result 683 states and 1066 transitions. [2024-11-24 01:49:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:33,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-24 01:49:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:33,964 INFO L225 Difference]: With dead ends: 683 [2024-11-24 01:49:33,964 INFO L226 Difference]: Without dead ends: 443 [2024-11-24 01:49:33,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:33,966 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 98 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:33,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 317 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-24 01:49:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2024-11-24 01:49:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.5454545454545454) internal successors, (680), 440 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 680 transitions. [2024-11-24 01:49:34,009 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 680 transitions. Word has length 49 [2024-11-24 01:49:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:34,009 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 680 transitions. [2024-11-24 01:49:34,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 680 transitions. [2024-11-24 01:49:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 01:49:34,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:34,011 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] [2024-11-24 01:49:34,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:49:34,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:34,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1328032366, now seen corresponding path program 1 times [2024-11-24 01:49:34,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:34,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409511866] [2024-11-24 01:49:34,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:34,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:34,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409511866] [2024-11-24 01:49:34,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409511866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:34,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:34,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:34,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739723486] [2024-11-24 01:49:34,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:34,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:34,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:34,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:34,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:34,205 INFO L87 Difference]: Start difference. First operand 441 states and 680 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:34,247 INFO L93 Difference]: Finished difference Result 1141 states and 1778 transitions. [2024-11-24 01:49:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-24 01:49:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:34,253 INFO L225 Difference]: With dead ends: 1141 [2024-11-24 01:49:34,253 INFO L226 Difference]: Without dead ends: 727 [2024-11-24 01:49:34,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:34,259 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 93 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:34,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-24 01:49:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 725. [2024-11-24 01:49:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 1.5414364640883977) internal successors, (1116), 724 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1116 transitions. [2024-11-24 01:49:34,294 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1116 transitions. Word has length 50 [2024-11-24 01:49:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:34,294 INFO L471 AbstractCegarLoop]: Abstraction has 725 states and 1116 transitions. [2024-11-24 01:49:34,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1116 transitions. [2024-11-24 01:49:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-24 01:49:34,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:34,300 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] [2024-11-24 01:49:34,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:49:34,301 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:34,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1540305433, now seen corresponding path program 1 times [2024-11-24 01:49:34,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:34,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159117877] [2024-11-24 01:49:34,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:34,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:34,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:34,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159117877] [2024-11-24 01:49:34,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159117877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:34,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:34,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:49:34,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910635529] [2024-11-24 01:49:34,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:34,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:49:34,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:34,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:49:34,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:49:34,589 INFO L87 Difference]: Start difference. First operand 725 states and 1116 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:34,812 INFO L93 Difference]: Finished difference Result 4215 states and 6561 transitions. [2024-11-24 01:49:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:49:34,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-24 01:49:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:34,830 INFO L225 Difference]: With dead ends: 4215 [2024-11-24 01:49:34,831 INFO L226 Difference]: Without dead ends: 3517 [2024-11-24 01:49:34,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:49:34,835 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 849 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:34,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1016 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2024-11-24 01:49:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 1421. [2024-11-24 01:49:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.5295774647887324) internal successors, (2172), 1420 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2172 transitions. [2024-11-24 01:49:34,924 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2172 transitions. Word has length 51 [2024-11-24 01:49:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:34,926 INFO L471 AbstractCegarLoop]: Abstraction has 1421 states and 2172 transitions. [2024-11-24 01:49:34,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2172 transitions. [2024-11-24 01:49:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 01:49:34,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:34,932 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] [2024-11-24 01:49:34,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:49:34,933 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:34,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash 485371887, now seen corresponding path program 1 times [2024-11-24 01:49:34,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:34,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421926448] [2024-11-24 01:49:34,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:34,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:35,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421926448] [2024-11-24 01:49:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421926448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:35,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:35,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:49:35,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860822914] [2024-11-24 01:49:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:35,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:49:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:35,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:49:35,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:49:35,335 INFO L87 Difference]: Start difference. First operand 1421 states and 2172 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:35,519 INFO L93 Difference]: Finished difference Result 6181 states and 9408 transitions. [2024-11-24 01:49:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:49:35,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-24 01:49:35,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:35,541 INFO L225 Difference]: With dead ends: 6181 [2024-11-24 01:49:35,542 INFO L226 Difference]: Without dead ends: 4787 [2024-11-24 01:49:35,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:49:35,551 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 550 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:35,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 546 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2024-11-24 01:49:35,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4781. [2024-11-24 01:49:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4780 states have (on average 1.512133891213389) internal successors, (7228), 4780 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7228 transitions. [2024-11-24 01:49:35,741 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7228 transitions. Word has length 52 [2024-11-24 01:49:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:35,741 INFO L471 AbstractCegarLoop]: Abstraction has 4781 states and 7228 transitions. [2024-11-24 01:49:35,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7228 transitions. [2024-11-24 01:49:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 01:49:35,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:35,745 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] [2024-11-24 01:49:35,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:49:35,745 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:35,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash -381291208, now seen corresponding path program 1 times [2024-11-24 01:49:35,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:35,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219397681] [2024-11-24 01:49:35,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:35,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:35,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:35,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219397681] [2024-11-24 01:49:35,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219397681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:35,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:35,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:49:35,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178242146] [2024-11-24 01:49:35,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:35,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:49:35,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:35,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:49:35,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:49:35,975 INFO L87 Difference]: Start difference. First operand 4781 states and 7228 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:36,320 INFO L93 Difference]: Finished difference Result 14289 states and 21630 transitions. [2024-11-24 01:49:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:49:36,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-24 01:49:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:36,365 INFO L225 Difference]: With dead ends: 14289 [2024-11-24 01:49:36,365 INFO L226 Difference]: Without dead ends: 9535 [2024-11-24 01:49:36,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:49:36,373 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 616 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:36,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 171 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:49:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9535 states. [2024-11-24 01:49:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9535 to 9533. [2024-11-24 01:49:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9533 states, 9532 states have (on average 1.5035669324381031) internal successors, (14332), 9532 states have internal predecessors, (14332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9533 states to 9533 states and 14332 transitions. [2024-11-24 01:49:36,775 INFO L78 Accepts]: Start accepts. Automaton has 9533 states and 14332 transitions. Word has length 54 [2024-11-24 01:49:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:36,776 INFO L471 AbstractCegarLoop]: Abstraction has 9533 states and 14332 transitions. [2024-11-24 01:49:36,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 9533 states and 14332 transitions. [2024-11-24 01:49:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 01:49:36,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:36,778 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] [2024-11-24 01:49:36,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:49:36,778 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:36,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1195703203, now seen corresponding path program 1 times [2024-11-24 01:49:36,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:36,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053177559] [2024-11-24 01:49:36,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:36,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:37,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053177559] [2024-11-24 01:49:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053177559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:37,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:37,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:49:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852386048] [2024-11-24 01:49:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:37,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:49:37,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:37,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:49:37,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:49:37,185 INFO L87 Difference]: Start difference. First operand 9533 states and 14332 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:37,253 INFO L93 Difference]: Finished difference Result 10047 states and 15101 transitions. [2024-11-24 01:49:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:49:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-24 01:49:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:37,305 INFO L225 Difference]: With dead ends: 10047 [2024-11-24 01:49:37,305 INFO L226 Difference]: Without dead ends: 10045 [2024-11-24 01:49:37,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:49:37,309 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:37,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 561 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2024-11-24 01:49:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 10045. [2024-11-24 01:49:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10045 states, 10044 states have (on average 1.4778972520908005) internal successors, (14844), 10044 states have internal predecessors, (14844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10045 states to 10045 states and 14844 transitions. [2024-11-24 01:49:37,549 INFO L78 Accepts]: Start accepts. Automaton has 10045 states and 14844 transitions. Word has length 54 [2024-11-24 01:49:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:37,549 INFO L471 AbstractCegarLoop]: Abstraction has 10045 states and 14844 transitions. [2024-11-24 01:49:37,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 10045 states and 14844 transitions. [2024-11-24 01:49:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 01:49:37,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:37,551 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] [2024-11-24 01:49:37,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:49:37,551 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:37,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1598479419, now seen corresponding path program 1 times [2024-11-24 01:49:37,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:37,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685035406] [2024-11-24 01:49:37,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:37,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:37,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685035406] [2024-11-24 01:49:37,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685035406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:37,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:37,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:37,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970264723] [2024-11-24 01:49:37,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:37,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:37,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:37,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:37,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:37,666 INFO L87 Difference]: Start difference. First operand 10045 states and 14844 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:37,804 INFO L93 Difference]: Finished difference Result 24307 states and 35900 transitions. [2024-11-24 01:49:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-24 01:49:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:37,840 INFO L225 Difference]: With dead ends: 24307 [2024-11-24 01:49:37,841 INFO L226 Difference]: Without dead ends: 14289 [2024-11-24 01:49:37,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:37,852 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 83 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:37,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 295 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:37,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14289 states. [2024-11-24 01:49:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14289 to 14287. [2024-11-24 01:49:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14287 states, 14286 states have (on average 1.4678706425871482) internal successors, (20970), 14286 states have internal predecessors, (20970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14287 states to 14287 states and 20970 transitions. [2024-11-24 01:49:38,136 INFO L78 Accepts]: Start accepts. Automaton has 14287 states and 20970 transitions. Word has length 55 [2024-11-24 01:49:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:38,136 INFO L471 AbstractCegarLoop]: Abstraction has 14287 states and 20970 transitions. [2024-11-24 01:49:38,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 14287 states and 20970 transitions. [2024-11-24 01:49:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:49:38,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:38,148 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:38,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:49:38,148 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:38,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:38,149 INFO L85 PathProgramCache]: Analyzing trace with hash -517305580, now seen corresponding path program 1 times [2024-11-24 01:49:38,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:38,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481947910] [2024-11-24 01:49:38,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:38,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:38,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:38,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481947910] [2024-11-24 01:49:38,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481947910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:49:38,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893404964] [2024-11-24 01:49:38,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:38,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:49:38,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:49:38,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:49:38,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:49:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:38,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 01:49:38,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:49:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:39,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:49:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:40,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893404964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:49:40,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:49:40,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 14 [2024-11-24 01:49:40,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540498320] [2024-11-24 01:49:40,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:49:40,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:49:40,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:40,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:49:40,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:49:40,508 INFO L87 Difference]: Start difference. First operand 14287 states and 20970 transitions. Second operand has 14 states, 14 states have (on average 14.214285714285714) internal successors, (199), 14 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:41,583 INFO L93 Difference]: Finished difference Result 55366 states and 81239 transitions. [2024-11-24 01:49:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:49:41,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.214285714285714) internal successors, (199), 14 states have internal predecessors, (199), 0 states have call successors, (0), 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 76 [2024-11-24 01:49:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:41,693 INFO L225 Difference]: With dead ends: 55366 [2024-11-24 01:49:41,693 INFO L226 Difference]: Without dead ends: 41108 [2024-11-24 01:49:41,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:49:41,713 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 2095 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:41,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2095 Valid, 1707 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:49:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41108 states. [2024-11-24 01:49:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41108 to 29618. [2024-11-24 01:49:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29618 states, 29617 states have (on average 1.4583853867711112) internal successors, (43193), 29617 states have internal predecessors, (43193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29618 states to 29618 states and 43193 transitions. [2024-11-24 01:49:42,422 INFO L78 Accepts]: Start accepts. Automaton has 29618 states and 43193 transitions. Word has length 76 [2024-11-24 01:49:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:42,422 INFO L471 AbstractCegarLoop]: Abstraction has 29618 states and 43193 transitions. [2024-11-24 01:49:42,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.214285714285714) internal successors, (199), 14 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 29618 states and 43193 transitions. [2024-11-24 01:49:42,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:49:42,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:42,427 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:42,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:49:42,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:49:42,632 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:42,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1873970904, now seen corresponding path program 1 times [2024-11-24 01:49:42,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:42,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340022333] [2024-11-24 01:49:42,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:49:42,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:42,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340022333] [2024-11-24 01:49:42,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340022333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:42,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:42,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:49:42,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236619153] [2024-11-24 01:49:42,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:42,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:49:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:42,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:49:42,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:49:42,945 INFO L87 Difference]: Start difference. First operand 29618 states and 43193 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:43,216 INFO L93 Difference]: Finished difference Result 68403 states and 100396 transitions. [2024-11-24 01:49:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:49:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 77 [2024-11-24 01:49:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:43,348 INFO L225 Difference]: With dead ends: 68403 [2024-11-24 01:49:43,348 INFO L226 Difference]: Without dead ends: 55817 [2024-11-24 01:49:43,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:49:43,372 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 670 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:43,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 953 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55817 states. [2024-11-24 01:49:44,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55817 to 42022. [2024-11-24 01:49:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42022 states, 42021 states have (on average 1.4552485661930938) internal successors, (61151), 42021 states have internal predecessors, (61151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42022 states to 42022 states and 61151 transitions. [2024-11-24 01:49:44,211 INFO L78 Accepts]: Start accepts. Automaton has 42022 states and 61151 transitions. Word has length 77 [2024-11-24 01:49:44,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:44,211 INFO L471 AbstractCegarLoop]: Abstraction has 42022 states and 61151 transitions. [2024-11-24 01:49:44,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 42022 states and 61151 transitions. [2024-11-24 01:49:44,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:49:44,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:44,219 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:44,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:49:44,219 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:44,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1469487211, now seen corresponding path program 1 times [2024-11-24 01:49:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:44,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876478007] [2024-11-24 01:49:44,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:44,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:44,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:44,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876478007] [2024-11-24 01:49:44,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876478007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:44,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:44,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:44,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539636580] [2024-11-24 01:49:44,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:44,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:44,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:44,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:44,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:44,312 INFO L87 Difference]: Start difference. First operand 42022 states and 61151 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:44,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:44,815 INFO L93 Difference]: Finished difference Result 84084 states and 121843 transitions. [2024-11-24 01:49:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:44,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-24 01:49:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:44,925 INFO L225 Difference]: With dead ends: 84084 [2024-11-24 01:49:44,925 INFO L226 Difference]: Without dead ends: 57372 [2024-11-24 01:49:44,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:44,955 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 83 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:44,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 306 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57372 states. [2024-11-24 01:49:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57372 to 55012. [2024-11-24 01:49:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55012 states, 55011 states have (on average 1.43398593008671) internal successors, (78885), 55011 states have internal predecessors, (78885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55012 states to 55012 states and 78885 transitions. [2024-11-24 01:49:45,965 INFO L78 Accepts]: Start accepts. Automaton has 55012 states and 78885 transitions. Word has length 77 [2024-11-24 01:49:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:45,965 INFO L471 AbstractCegarLoop]: Abstraction has 55012 states and 78885 transitions. [2024-11-24 01:49:45,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 55012 states and 78885 transitions. [2024-11-24 01:49:45,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:49:45,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:45,970 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:45,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:49:45,971 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:45,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash 948797308, now seen corresponding path program 1 times [2024-11-24 01:49:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686524569] [2024-11-24 01:49:45,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:46,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:46,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686524569] [2024-11-24 01:49:46,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686524569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:46,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:46,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:46,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52830230] [2024-11-24 01:49:46,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:46,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:46,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:46,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:46,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:46,070 INFO L87 Difference]: Start difference. First operand 55012 states and 78885 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:46,616 INFO L93 Difference]: Finished difference Result 89038 states and 126777 transitions. [2024-11-24 01:49:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:46,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-24 01:49:46,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:46,802 INFO L225 Difference]: With dead ends: 89038 [2024-11-24 01:49:46,802 INFO L226 Difference]: Without dead ends: 57320 [2024-11-24 01:49:46,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:46,821 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 84 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:46,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 325 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:46,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57320 states. [2024-11-24 01:49:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57320 to 55138. [2024-11-24 01:49:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55138 states, 55137 states have (on average 1.4098699602807552) internal successors, (77736), 55137 states have internal predecessors, (77736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55138 states to 55138 states and 77736 transitions. [2024-11-24 01:49:47,790 INFO L78 Accepts]: Start accepts. Automaton has 55138 states and 77736 transitions. Word has length 77 [2024-11-24 01:49:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:47,793 INFO L471 AbstractCegarLoop]: Abstraction has 55138 states and 77736 transitions. [2024-11-24 01:49:47,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:47,793 INFO L276 IsEmpty]: Start isEmpty. Operand 55138 states and 77736 transitions. [2024-11-24 01:49:47,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:49:47,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:47,798 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:47,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:49:47,798 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:47,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash -231517371, now seen corresponding path program 1 times [2024-11-24 01:49:47,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:47,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559499120] [2024-11-24 01:49:47,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:47,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:47,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559499120] [2024-11-24 01:49:47,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559499120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:47,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:47,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610973528] [2024-11-24 01:49:47,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:47,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:47,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:47,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:47,884 INFO L87 Difference]: Start difference. First operand 55138 states and 77736 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:48,451 INFO L93 Difference]: Finished difference Result 152111 states and 213922 transitions. [2024-11-24 01:49:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:48,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-24 01:49:48,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:48,622 INFO L225 Difference]: With dead ends: 152111 [2024-11-24 01:49:48,622 INFO L226 Difference]: Without dead ends: 101555 [2024-11-24 01:49:48,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:48,668 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 80 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:48,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 286 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:48,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101555 states. [2024-11-24 01:49:50,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101555 to 101399. [2024-11-24 01:49:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101399 states, 101398 states have (on average 1.3921083256080002) internal successors, (141157), 101398 states have internal predecessors, (141157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101399 states to 101399 states and 141157 transitions. [2024-11-24 01:49:50,416 INFO L78 Accepts]: Start accepts. Automaton has 101399 states and 141157 transitions. Word has length 77 [2024-11-24 01:49:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:50,416 INFO L471 AbstractCegarLoop]: Abstraction has 101399 states and 141157 transitions. [2024-11-24 01:49:50,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 101399 states and 141157 transitions. [2024-11-24 01:49:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:49:50,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:50,422 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:50,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:49:50,422 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:50,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:50,423 INFO L85 PathProgramCache]: Analyzing trace with hash 561359425, now seen corresponding path program 1 times [2024-11-24 01:49:50,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:50,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493702629] [2024-11-24 01:49:50,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:50,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:49:50,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:50,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493702629] [2024-11-24 01:49:50,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493702629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:50,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:50,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:49:50,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700170102] [2024-11-24 01:49:50,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:50,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:49:50,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:50,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:49:50,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:49:50,929 INFO L87 Difference]: Start difference. First operand 101399 states and 141157 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:51,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:51,454 INFO L93 Difference]: Finished difference Result 185429 states and 260803 transitions. [2024-11-24 01:49:51,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:49:51,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 77 [2024-11-24 01:49:51,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:51,686 INFO L225 Difference]: With dead ends: 185429 [2024-11-24 01:49:51,686 INFO L226 Difference]: Without dead ends: 168603 [2024-11-24 01:49:51,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:49:51,734 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 710 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:51,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 910 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:51,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168603 states. [2024-11-24 01:49:53,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168603 to 117775. [2024-11-24 01:49:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117775 states, 117774 states have (on average 1.392268242566271) internal successors, (163973), 117774 states have internal predecessors, (163973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117775 states to 117775 states and 163973 transitions. [2024-11-24 01:49:54,358 INFO L78 Accepts]: Start accepts. Automaton has 117775 states and 163973 transitions. Word has length 77 [2024-11-24 01:49:54,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:54,358 INFO L471 AbstractCegarLoop]: Abstraction has 117775 states and 163973 transitions. [2024-11-24 01:49:54,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 117775 states and 163973 transitions. [2024-11-24 01:49:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:49:54,365 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:54,366 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:54,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:49:54,366 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:54,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1583866927, now seen corresponding path program 1 times [2024-11-24 01:49:54,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:54,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679733654] [2024-11-24 01:49:54,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:54,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:49:54,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679733654] [2024-11-24 01:49:54,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679733654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:54,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:54,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:49:54,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34348183] [2024-11-24 01:49:54,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:54,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:49:54,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:54,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:49:54,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:49:54,586 INFO L87 Difference]: Start difference. First operand 117775 states and 163973 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:55,321 INFO L93 Difference]: Finished difference Result 209871 states and 295080 transitions. [2024-11-24 01:49:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:49:55,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 77 [2024-11-24 01:49:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:55,620 INFO L225 Difference]: With dead ends: 209871 [2024-11-24 01:49:55,620 INFO L226 Difference]: Without dead ends: 184666 [2024-11-24 01:49:55,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:49:55,664 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 677 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:55,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 941 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184666 states. [2024-11-24 01:49:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184666 to 142293. [2024-11-24 01:49:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142293 states, 142292 states have (on average 1.39187726646614) internal successors, (198053), 142292 states have internal predecessors, (198053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142293 states to 142293 states and 198053 transitions. [2024-11-24 01:49:58,399 INFO L78 Accepts]: Start accepts. Automaton has 142293 states and 198053 transitions. Word has length 77 [2024-11-24 01:49:58,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:58,399 INFO L471 AbstractCegarLoop]: Abstraction has 142293 states and 198053 transitions. [2024-11-24 01:49:58,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:58,400 INFO L276 IsEmpty]: Start isEmpty. Operand 142293 states and 198053 transitions. [2024-11-24 01:49:58,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-24 01:49:58,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:58,406 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:58,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:49:58,407 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:58,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:58,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1862383359, now seen corresponding path program 1 times [2024-11-24 01:49:58,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:58,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573735445] [2024-11-24 01:49:58,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:58,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:58,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:58,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573735445] [2024-11-24 01:49:58,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573735445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:58,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:58,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:49:58,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073889083] [2024-11-24 01:49:58,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:58,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:49:58,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:58,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:49:58,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:49:58,671 INFO L87 Difference]: Start difference. First operand 142293 states and 198053 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:59,732 INFO L93 Difference]: Finished difference Result 251904 states and 353584 transitions. [2024-11-24 01:49:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:49:59,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-24 01:49:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:50:00,125 INFO L225 Difference]: With dead ends: 251904 [2024-11-24 01:50:00,125 INFO L226 Difference]: Without dead ends: 216725 [2024-11-24 01:50:00,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:50:00,183 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 737 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:50:00,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1004 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:50:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216725 states. [2024-11-24 01:50:03,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216725 to 170204. [2024-11-24 01:50:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170204 states, 170203 states have (on average 1.390598285576635) internal successors, (236684), 170203 states have internal predecessors, (236684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170204 states to 170204 states and 236684 transitions. [2024-11-24 01:50:03,456 INFO L78 Accepts]: Start accepts. Automaton has 170204 states and 236684 transitions. Word has length 78 [2024-11-24 01:50:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:50:03,456 INFO L471 AbstractCegarLoop]: Abstraction has 170204 states and 236684 transitions. [2024-11-24 01:50:03,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 170204 states and 236684 transitions. [2024-11-24 01:50:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 01:50:03,461 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:50:03,461 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:03,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:50:03,461 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:50:03,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:03,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1487010749, now seen corresponding path program 1 times [2024-11-24 01:50:03,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:03,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351458800] [2024-11-24 01:50:03,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:03,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:03,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:03,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351458800] [2024-11-24 01:50:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351458800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:50:03,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:50:03,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:50:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391865946] [2024-11-24 01:50:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:50:03,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:50:03,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:03,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:50:03,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:50:03,529 INFO L87 Difference]: Start difference. First operand 170204 states and 236684 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:04,390 INFO L93 Difference]: Finished difference Result 316525 states and 438781 transitions. [2024-11-24 01:50:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:50:04,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2024-11-24 01:50:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:50:05,314 INFO L225 Difference]: With dead ends: 316525 [2024-11-24 01:50:05,314 INFO L226 Difference]: Without dead ends: 150660 [2024-11-24 01:50:05,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:50:05,382 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 80 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:50:05,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 324 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:50:05,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150660 states. [2024-11-24 01:50:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150660 to 133735. [2024-11-24 01:50:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133735 states, 133734 states have (on average 1.3754243498287646) internal successors, (183941), 133734 states have internal predecessors, (183941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133735 states to 133735 states and 183941 transitions. [2024-11-24 01:50:07,598 INFO L78 Accepts]: Start accepts. Automaton has 133735 states and 183941 transitions. Word has length 80 [2024-11-24 01:50:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:50:07,598 INFO L471 AbstractCegarLoop]: Abstraction has 133735 states and 183941 transitions. [2024-11-24 01:50:07,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 133735 states and 183941 transitions. [2024-11-24 01:50:07,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-24 01:50:07,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:50:07,605 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:07,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:50:07,606 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:50:07,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:07,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1028061263, now seen corresponding path program 1 times [2024-11-24 01:50:07,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:07,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362312521] [2024-11-24 01:50:07,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:07,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:50:07,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:07,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362312521] [2024-11-24 01:50:07,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362312521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:50:07,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:50:07,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:50:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379697053] [2024-11-24 01:50:07,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:50:07,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:50:07,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:07,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:50:07,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:50:07,745 INFO L87 Difference]: Start difference. First operand 133735 states and 183941 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:09,383 INFO L93 Difference]: Finished difference Result 320552 states and 440295 transitions. [2024-11-24 01:50:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:50:09,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 82 [2024-11-24 01:50:09,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:50:09,581 INFO L225 Difference]: With dead ends: 320552 [2024-11-24 01:50:09,581 INFO L226 Difference]: Without dead ends: 186998 [2024-11-24 01:50:09,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:50:09,627 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 559 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:50:09,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 183 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:50:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186998 states. [2024-11-24 01:50:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186998 to 185452. [2024-11-24 01:50:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185452 states, 185451 states have (on average 1.3631147850375571) internal successors, (252791), 185451 states have internal predecessors, (252791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185452 states to 185452 states and 252791 transitions. [2024-11-24 01:50:12,517 INFO L78 Accepts]: Start accepts. Automaton has 185452 states and 252791 transitions. Word has length 82 [2024-11-24 01:50:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:50:12,517 INFO L471 AbstractCegarLoop]: Abstraction has 185452 states and 252791 transitions. [2024-11-24 01:50:12,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 185452 states and 252791 transitions. [2024-11-24 01:50:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-24 01:50:12,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:50:12,528 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:12,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:50:12,528 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:50:12,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:12,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1531106090, now seen corresponding path program 1 times [2024-11-24 01:50:12,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:12,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85726671] [2024-11-24 01:50:12,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:12,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:12,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:12,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85726671] [2024-11-24 01:50:12,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85726671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:12,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427423677] [2024-11-24 01:50:12,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:12,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:12,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:12,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:12,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:50:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:12,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:50:12,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:13,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:13,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427423677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:13,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:13,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-24 01:50:13,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100902483] [2024-11-24 01:50:13,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:13,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:50:13,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:13,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:50:13,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:50:13,539 INFO L87 Difference]: Start difference. First operand 185452 states and 252791 transitions. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:15,796 INFO L93 Difference]: Finished difference Result 407247 states and 556561 transitions. [2024-11-24 01:50:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:50:15,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 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 82 [2024-11-24 01:50:15,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:50:16,080 INFO L225 Difference]: With dead ends: 407247 [2024-11-24 01:50:16,080 INFO L226 Difference]: Without dead ends: 235337 [2024-11-24 01:50:16,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:50:16,135 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 1542 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:50:16,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 332 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:50:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235337 states. [2024-11-24 01:50:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235337 to 180028. [2024-11-24 01:50:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180028 states, 180027 states have (on average 1.3618734967532649) internal successors, (245174), 180027 states have internal predecessors, (245174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:19,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180028 states to 180028 states and 245174 transitions. [2024-11-24 01:50:19,024 INFO L78 Accepts]: Start accepts. Automaton has 180028 states and 245174 transitions. Word has length 82 [2024-11-24 01:50:19,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:50:19,025 INFO L471 AbstractCegarLoop]: Abstraction has 180028 states and 245174 transitions. [2024-11-24 01:50:19,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:19,025 INFO L276 IsEmpty]: Start isEmpty. Operand 180028 states and 245174 transitions. [2024-11-24 01:50:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-24 01:50:19,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:50:19,032 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:19,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:50:19,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:19,232 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:50:19,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:19,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1330329539, now seen corresponding path program 1 times [2024-11-24 01:50:19,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:19,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169842397] [2024-11-24 01:50:19,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:19,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:19,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169842397] [2024-11-24 01:50:19,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169842397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:19,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981090137] [2024-11-24 01:50:19,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:19,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:19,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:19,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:19,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9966591c-51e1-460e-9366-02be6f98ce48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:50:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:19,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:50:19,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:19,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:20,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981090137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:20,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:20,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-24 01:50:20,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354948955] [2024-11-24 01:50:20,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:20,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:50:20,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:20,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:50:20,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:50:20,018 INFO L87 Difference]: Start difference. First operand 180028 states and 245174 transitions. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)