./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-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_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/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_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/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_55a2a372-ce4c-4dfd-9e97-6256b57e349d/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 66c207afdf75651c63b981596e8f017960ef7c36414078ce8f63e7be229e927f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:28:01,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:28:01,148 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:28:01,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:28:01,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:28:01,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:28:01,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:28:01,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:28:01,196 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:28:01,196 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:28:01,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:28:01,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:28:01,197 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:28:01,197 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:28:01,197 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:28:01,198 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:28:01,198 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:28:01,198 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:28:01,198 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:28:01,198 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:28:01,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:28:01,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:28:01,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:28:01,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:28:01,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:28:01,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:28:01,199 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:28:01,199 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:28:01,199 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:28:01,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:28:01,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:28:01,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:28:01,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:28:01,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:28:01,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:28:01,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:28:01,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:28:01,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:28:01,200 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:28:01,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:28:01,201 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:28:01,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:28:01,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:28:01,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:28:01,201 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:28:01,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:28:01,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:28:01,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:28:01,201 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_55a2a372-ce4c-4dfd-9e97-6256b57e349d/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 -> 66c207afdf75651c63b981596e8f017960ef7c36414078ce8f63e7be229e927f [2024-11-23 18:28:01,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:28:01,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:28:01,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:28:01,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:28:01,471 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:28:01,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2024-11-23 18:28:04,328 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/data/560476826/533014ea64fd43fe9a13a543b29d6c8e/FLAGfb59fec79 [2024-11-23 18:28:04,756 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:28:04,757 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2024-11-23 18:28:04,795 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/data/560476826/533014ea64fd43fe9a13a543b29d6c8e/FLAGfb59fec79 [2024-11-23 18:28:04,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/data/560476826/533014ea64fd43fe9a13a543b29d6c8e [2024-11-23 18:28:04,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:28:04,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:28:04,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:28:04,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:28:04,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:28:04,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:28:04" (1/1) ... [2024-11-23 18:28:04,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315debf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:04, skipping insertion in model container [2024-11-23 18:28:04,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:28:04" (1/1) ... [2024-11-23 18:28:04,934 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:28:05,436 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_55a2a372-ce4c-4dfd-9e97-6256b57e349d/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26611,26624] [2024-11-23 18:28:05,517 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_55a2a372-ce4c-4dfd-9e97-6256b57e349d/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30833,30846] [2024-11-23 18:28:05,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:28:05,718 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:28:05,910 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_55a2a372-ce4c-4dfd-9e97-6256b57e349d/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26611,26624] [2024-11-23 18:28:05,952 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_55a2a372-ce4c-4dfd-9e97-6256b57e349d/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30833,30846] [2024-11-23 18:28:06,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:28:06,091 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:28:06,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06 WrapperNode [2024-11-23 18:28:06,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:28:06,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:28:06,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:28:06,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:28:06,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,269 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2716 [2024-11-23 18:28:06,269 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:28:06,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:28:06,270 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:28:06,270 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:28:06,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,369 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]. [2024-11-23 18:28:06,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,420 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:28:06,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:28:06,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:28:06,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:28:06,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (1/1) ... [2024-11-23 18:28:06,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:28:06,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:28:06,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:28:06,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55a2a372-ce4c-4dfd-9e97-6256b57e349d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:28:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:28:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:28:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:28:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:28:06,841 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:28:06,843 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:28:09,638 INFO L? ?]: Removed 187 outVars from TransFormulas that were not future-live. [2024-11-23 18:28:09,638 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:28:09,667 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:28:09,668 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 18:28:09,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:28:09 BoogieIcfgContainer [2024-11-23 18:28:09,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:28:09,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:28:09,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:28:09,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:28:09,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:28:04" (1/3) ... [2024-11-23 18:28:09,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de4b80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:28:09, skipping insertion in model container [2024-11-23 18:28:09,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:28:06" (2/3) ... [2024-11-23 18:28:09,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de4b80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:28:09, skipping insertion in model container [2024-11-23 18:28:09,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:28:09" (3/3) ... [2024-11-23 18:28:09,678 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2024-11-23 18:28:09,701 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:28:09,704 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c that has 1 procedures, 685 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-23 18:28:09,793 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:28:09,810 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;@34ff28a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:28:09,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 18:28:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 685 states, 682 states have (on average 1.7932551319648093) internal successors, (1223), 684 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-23 18:28:09,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:09,849 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:09,849 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:09,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:09,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1567561213, now seen corresponding path program 1 times [2024-11-23 18:28:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207547391] [2024-11-23 18:28:09,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:12,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:12,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207547391] [2024-11-23 18:28:12,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207547391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:12,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:12,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:28:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047622050] [2024-11-23 18:28:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:12,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:28:12,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:12,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:28:12,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:12,163 INFO L87 Difference]: Start difference. First operand has 685 states, 682 states have (on average 1.7932551319648093) internal successors, (1223), 684 states have internal predecessors, (1223), 0 states have call successors, (0), 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 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:12,676 INFO L93 Difference]: Finished difference Result 3325 states and 5946 transitions. [2024-11-23 18:28:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:28:12,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2024-11-23 18:28:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:12,720 INFO L225 Difference]: With dead ends: 3325 [2024-11-23 18:28:12,722 INFO L226 Difference]: Without dead ends: 2643 [2024-11-23 18:28:12,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:28:12,734 INFO L435 NwaCegarLoop]: 1829 mSDtfsCounter, 3894 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3894 SdHoareTripleChecker+Valid, 4790 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:12,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3894 Valid, 4790 Invalid, 126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:28:12,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2024-11-23 18:28:12,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 1298. [2024-11-23 18:28:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1296 states have (on average 1.5625) internal successors, (2025), 1297 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 2025 transitions. [2024-11-23 18:28:12,911 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 2025 transitions. Word has length 247 [2024-11-23 18:28:12,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:12,911 INFO L471 AbstractCegarLoop]: Abstraction has 1298 states and 2025 transitions. [2024-11-23 18:28:12,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:12,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 2025 transitions. [2024-11-23 18:28:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-23 18:28:12,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:12,921 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:12,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:28:12,921 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:12,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash -619024179, now seen corresponding path program 1 times [2024-11-23 18:28:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:12,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60053455] [2024-11-23 18:28:12,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:12,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:13,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:13,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60053455] [2024-11-23 18:28:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60053455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:13,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:13,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:13,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163793759] [2024-11-23 18:28:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:13,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:13,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:13,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:13,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:13,365 INFO L87 Difference]: Start difference. First operand 1298 states and 2025 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:13,500 INFO L93 Difference]: Finished difference Result 3722 states and 5773 transitions. [2024-11-23 18:28:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:13,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2024-11-23 18:28:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:13,515 INFO L225 Difference]: With dead ends: 3722 [2024-11-23 18:28:13,515 INFO L226 Difference]: Without dead ends: 2549 [2024-11-23 18:28:13,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:13,520 INFO L435 NwaCegarLoop]: 2067 mSDtfsCounter, 928 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:13,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 3080 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:13,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2024-11-23 18:28:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2513. [2024-11-23 18:28:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2511 states have (on average 1.55515730784548) internal successors, (3905), 2512 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3905 transitions. [2024-11-23 18:28:13,621 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3905 transitions. Word has length 249 [2024-11-23 18:28:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:13,622 INFO L471 AbstractCegarLoop]: Abstraction has 2513 states and 3905 transitions. [2024-11-23 18:28:13,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3905 transitions. [2024-11-23 18:28:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-23 18:28:13,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:13,633 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:13,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:28:13,634 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:13,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:13,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1334674344, now seen corresponding path program 1 times [2024-11-23 18:28:13,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:13,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039489110] [2024-11-23 18:28:13,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:13,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:13,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:13,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039489110] [2024-11-23 18:28:13,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039489110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:13,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:13,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:13,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658233845] [2024-11-23 18:28:13,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:13,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:13,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:13,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:13,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:13,881 INFO L87 Difference]: Start difference. First operand 2513 states and 3905 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:14,068 INFO L93 Difference]: Finished difference Result 7472 states and 11599 transitions. [2024-11-23 18:28:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2024-11-23 18:28:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:14,087 INFO L225 Difference]: With dead ends: 7472 [2024-11-23 18:28:14,088 INFO L226 Difference]: Without dead ends: 4997 [2024-11-23 18:28:14,091 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 [2024-11-23 18:28:14,092 INFO L435 NwaCegarLoop]: 2112 mSDtfsCounter, 1053 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:14,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 3166 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2024-11-23 18:28:14,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 2532. [2024-11-23 18:28:14,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2530 states have (on average 1.5545454545454545) internal successors, (3933), 2531 states have internal predecessors, (3933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3933 transitions. [2024-11-23 18:28:14,190 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3933 transitions. Word has length 249 [2024-11-23 18:28:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:14,191 INFO L471 AbstractCegarLoop]: Abstraction has 2532 states and 3933 transitions. [2024-11-23 18:28:14,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3933 transitions. [2024-11-23 18:28:14,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-23 18:28:14,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:14,198 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:14,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:28:14,198 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:14,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash -885150611, now seen corresponding path program 1 times [2024-11-23 18:28:14,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:14,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37640849] [2024-11-23 18:28:14,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:14,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:14,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:14,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37640849] [2024-11-23 18:28:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37640849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:14,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:14,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:14,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634107218] [2024-11-23 18:28:14,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:14,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:14,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:14,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:14,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:14,445 INFO L87 Difference]: Start difference. First operand 2532 states and 3933 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:14,564 INFO L93 Difference]: Finished difference Result 5026 states and 7799 transitions. [2024-11-23 18:28:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:14,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2024-11-23 18:28:14,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:14,575 INFO L225 Difference]: With dead ends: 5026 [2024-11-23 18:28:14,575 INFO L226 Difference]: Without dead ends: 2550 [2024-11-23 18:28:14,578 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 [2024-11-23 18:28:14,579 INFO L435 NwaCegarLoop]: 1077 mSDtfsCounter, 5 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:14,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2139 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:14,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2024-11-23 18:28:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2550. [2024-11-23 18:28:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2548 states have (on average 1.5518053375196232) internal successors, (3954), 2549 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3954 transitions. [2024-11-23 18:28:14,673 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3954 transitions. Word has length 250 [2024-11-23 18:28:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:14,673 INFO L471 AbstractCegarLoop]: Abstraction has 2550 states and 3954 transitions. [2024-11-23 18:28:14,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3954 transitions. [2024-11-23 18:28:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-23 18:28:14,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:14,680 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:14,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:28:14,681 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:14,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1254851346, now seen corresponding path program 1 times [2024-11-23 18:28:14,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:14,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059876256] [2024-11-23 18:28:14,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:14,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:14,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:14,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059876256] [2024-11-23 18:28:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059876256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:14,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:14,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:14,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286526806] [2024-11-23 18:28:14,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:14,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:14,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:14,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:14,979 INFO L87 Difference]: Start difference. First operand 2550 states and 3954 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:15,141 INFO L93 Difference]: Finished difference Result 7222 states and 11133 transitions. [2024-11-23 18:28:15,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:15,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2024-11-23 18:28:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:15,160 INFO L225 Difference]: With dead ends: 7222 [2024-11-23 18:28:15,160 INFO L226 Difference]: Without dead ends: 4913 [2024-11-23 18:28:15,163 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 [2024-11-23 18:28:15,165 INFO L435 NwaCegarLoop]: 2074 mSDtfsCounter, 922 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:15,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 3087 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4913 states. [2024-11-23 18:28:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4913 to 4879. [2024-11-23 18:28:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4879 states, 4877 states have (on average 1.5407012507689153) internal successors, (7514), 4878 states have internal predecessors, (7514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 7514 transitions. [2024-11-23 18:28:15,334 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 7514 transitions. Word has length 251 [2024-11-23 18:28:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:15,336 INFO L471 AbstractCegarLoop]: Abstraction has 4879 states and 7514 transitions. [2024-11-23 18:28:15,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 7514 transitions. [2024-11-23 18:28:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-23 18:28:15,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:15,349 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:15,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:28:15,350 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:15,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1748316267, now seen corresponding path program 1 times [2024-11-23 18:28:15,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:15,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774553640] [2024-11-23 18:28:15,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:15,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:16,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774553640] [2024-11-23 18:28:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774553640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:16,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:16,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:28:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311387084] [2024-11-23 18:28:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:16,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:28:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:16,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:28:16,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:16,449 INFO L87 Difference]: Start difference. First operand 4879 states and 7514 transitions. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:16,744 INFO L93 Difference]: Finished difference Result 18596 states and 28512 transitions. [2024-11-23 18:28:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:28:16,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2024-11-23 18:28:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:16,805 INFO L225 Difference]: With dead ends: 18596 [2024-11-23 18:28:16,806 INFO L226 Difference]: Without dead ends: 13893 [2024-11-23 18:28:16,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:16,815 INFO L435 NwaCegarLoop]: 1899 mSDtfsCounter, 2417 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2417 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:16,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2417 Valid, 3883 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:28:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13893 states. [2024-11-23 18:28:17,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13893 to 9379. [2024-11-23 18:28:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9379 states, 9377 states have (on average 1.52692758878106) internal successors, (14318), 9378 states have internal predecessors, (14318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9379 states to 9379 states and 14318 transitions. [2024-11-23 18:28:17,134 INFO L78 Accepts]: Start accepts. Automaton has 9379 states and 14318 transitions. Word has length 251 [2024-11-23 18:28:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:17,134 INFO L471 AbstractCegarLoop]: Abstraction has 9379 states and 14318 transitions. [2024-11-23 18:28:17,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:17,135 INFO L276 IsEmpty]: Start isEmpty. Operand 9379 states and 14318 transitions. [2024-11-23 18:28:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-23 18:28:17,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:17,150 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:17,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:28:17,151 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:17,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1184733607, now seen corresponding path program 1 times [2024-11-23 18:28:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714826580] [2024-11-23 18:28:17,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:18,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:18,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714826580] [2024-11-23 18:28:18,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714826580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:18,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:18,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:28:18,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036771092] [2024-11-23 18:28:18,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:18,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:28:18,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:18,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:28:18,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:18,398 INFO L87 Difference]: Start difference. First operand 9379 states and 14318 transitions. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:18,637 INFO L93 Difference]: Finished difference Result 26648 states and 40368 transitions. [2024-11-23 18:28:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:28:18,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-11-23 18:28:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:18,674 INFO L225 Difference]: With dead ends: 26648 [2024-11-23 18:28:18,675 INFO L226 Difference]: Without dead ends: 18135 [2024-11-23 18:28:18,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:18,688 INFO L435 NwaCegarLoop]: 2109 mSDtfsCounter, 1018 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 5272 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:18,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 5272 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:18,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18135 states. [2024-11-23 18:28:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18135 to 9814. [2024-11-23 18:28:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9814 states, 9812 states have (on average 1.531390134529148) internal successors, (15026), 9813 states have internal predecessors, (15026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9814 states to 9814 states and 15026 transitions. [2024-11-23 18:28:18,962 INFO L78 Accepts]: Start accepts. Automaton has 9814 states and 15026 transitions. Word has length 253 [2024-11-23 18:28:18,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:18,963 INFO L471 AbstractCegarLoop]: Abstraction has 9814 states and 15026 transitions. [2024-11-23 18:28:18,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:18,964 INFO L276 IsEmpty]: Start isEmpty. Operand 9814 states and 15026 transitions. [2024-11-23 18:28:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-23 18:28:18,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:18,980 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:18,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:28:18,980 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:18,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:18,981 INFO L85 PathProgramCache]: Analyzing trace with hash -152315398, now seen corresponding path program 1 times [2024-11-23 18:28:18,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:18,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928358735] [2024-11-23 18:28:18,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:18,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:19,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928358735] [2024-11-23 18:28:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928358735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:19,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:19,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:19,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018079858] [2024-11-23 18:28:19,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:19,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:19,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:19,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:19,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:19,209 INFO L87 Difference]: Start difference. First operand 9814 states and 15026 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:19,372 INFO L93 Difference]: Finished difference Result 19745 states and 30418 transitions. [2024-11-23 18:28:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:19,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-11-23 18:28:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:19,401 INFO L225 Difference]: With dead ends: 19745 [2024-11-23 18:28:19,402 INFO L226 Difference]: Without dead ends: 13196 [2024-11-23 18:28:19,410 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 [2024-11-23 18:28:19,411 INFO L435 NwaCegarLoop]: 1424 mSDtfsCounter, 547 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:19,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 2277 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:19,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13196 states. [2024-11-23 18:28:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13196 to 11770. [2024-11-23 18:28:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11770 states, 11768 states have (on average 1.5491162474507139) internal successors, (18230), 11769 states have internal predecessors, (18230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11770 states to 11770 states and 18230 transitions. [2024-11-23 18:28:19,670 INFO L78 Accepts]: Start accepts. Automaton has 11770 states and 18230 transitions. Word has length 253 [2024-11-23 18:28:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:19,671 INFO L471 AbstractCegarLoop]: Abstraction has 11770 states and 18230 transitions. [2024-11-23 18:28:19,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 11770 states and 18230 transitions. [2024-11-23 18:28:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-23 18:28:19,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:19,687 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:19,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:28:19,687 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:19,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash -336555914, now seen corresponding path program 1 times [2024-11-23 18:28:19,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:19,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864832592] [2024-11-23 18:28:19,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:19,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:19,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:19,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864832592] [2024-11-23 18:28:19,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864832592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:19,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:19,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:19,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71476204] [2024-11-23 18:28:19,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:19,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:19,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:19,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:19,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:19,919 INFO L87 Difference]: Start difference. First operand 11770 states and 18230 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:20,041 INFO L93 Difference]: Finished difference Result 32658 states and 50121 transitions. [2024-11-23 18:28:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:20,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2024-11-23 18:28:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:20,086 INFO L225 Difference]: With dead ends: 32658 [2024-11-23 18:28:20,086 INFO L226 Difference]: Without dead ends: 22249 [2024-11-23 18:28:20,099 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 [2024-11-23 18:28:20,100 INFO L435 NwaCegarLoop]: 1974 mSDtfsCounter, 918 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:20,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 3024 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22249 states. [2024-11-23 18:28:20,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22249 to 11972. [2024-11-23 18:28:20,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11972 states, 11970 states have (on average 1.5461152882205513) internal successors, (18507), 11971 states have internal predecessors, (18507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11972 states to 11972 states and 18507 transitions. [2024-11-23 18:28:20,376 INFO L78 Accepts]: Start accepts. Automaton has 11972 states and 18507 transitions. Word has length 255 [2024-11-23 18:28:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:20,377 INFO L471 AbstractCegarLoop]: Abstraction has 11972 states and 18507 transitions. [2024-11-23 18:28:20,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11972 states and 18507 transitions. [2024-11-23 18:28:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-23 18:28:20,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:20,391 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:20,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:28:20,392 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:20,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash 953247991, now seen corresponding path program 1 times [2024-11-23 18:28:20,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:20,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793577413] [2024-11-23 18:28:20,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:20,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:20,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:20,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793577413] [2024-11-23 18:28:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793577413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:20,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:20,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:20,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477076909] [2024-11-23 18:28:20,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:20,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:20,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:20,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:20,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:20,619 INFO L87 Difference]: Start difference. First operand 11972 states and 18507 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:20,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:20,735 INFO L93 Difference]: Finished difference Result 22637 states and 34766 transitions. [2024-11-23 18:28:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:20,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2024-11-23 18:28:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:20,763 INFO L225 Difference]: With dead ends: 22637 [2024-11-23 18:28:20,763 INFO L226 Difference]: Without dead ends: 12215 [2024-11-23 18:28:20,775 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 [2024-11-23 18:28:20,776 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 5 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:20,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2132 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2024-11-23 18:28:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 12215. [2024-11-23 18:28:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12215 states, 12213 states have (on average 1.53852452304921) internal successors, (18790), 12214 states have internal predecessors, (18790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12215 states to 12215 states and 18790 transitions. [2024-11-23 18:28:21,039 INFO L78 Accepts]: Start accepts. Automaton has 12215 states and 18790 transitions. Word has length 256 [2024-11-23 18:28:21,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:21,040 INFO L471 AbstractCegarLoop]: Abstraction has 12215 states and 18790 transitions. [2024-11-23 18:28:21,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 12215 states and 18790 transitions. [2024-11-23 18:28:21,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-23 18:28:21,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:21,061 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:21,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:28:21,061 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:21,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1228625224, now seen corresponding path program 1 times [2024-11-23 18:28:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:21,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258262553] [2024-11-23 18:28:21,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:21,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:21,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:21,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258262553] [2024-11-23 18:28:21,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258262553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:21,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:21,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:21,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426342097] [2024-11-23 18:28:21,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:21,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:21,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:21,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:21,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:21,347 INFO L87 Difference]: Start difference. First operand 12215 states and 18790 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:21,579 INFO L93 Difference]: Finished difference Result 34193 states and 52224 transitions. [2024-11-23 18:28:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2024-11-23 18:28:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:21,634 INFO L225 Difference]: With dead ends: 34193 [2024-11-23 18:28:21,635 INFO L226 Difference]: Without dead ends: 23524 [2024-11-23 18:28:21,652 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 [2024-11-23 18:28:21,653 INFO L435 NwaCegarLoop]: 2047 mSDtfsCounter, 912 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:21,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 3057 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23524 states. [2024-11-23 18:28:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23524 to 23498. [2024-11-23 18:28:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23498 states, 23496 states have (on average 1.5240466462376574) internal successors, (35809), 23497 states have internal predecessors, (35809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:22,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23498 states to 23498 states and 35809 transitions. [2024-11-23 18:28:22,048 INFO L78 Accepts]: Start accepts. Automaton has 23498 states and 35809 transitions. Word has length 256 [2024-11-23 18:28:22,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:22,048 INFO L471 AbstractCegarLoop]: Abstraction has 23498 states and 35809 transitions. [2024-11-23 18:28:22,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:22,048 INFO L276 IsEmpty]: Start isEmpty. Operand 23498 states and 35809 transitions. [2024-11-23 18:28:22,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-23 18:28:22,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:22,077 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:22,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:28:22,078 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:22,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash 297446115, now seen corresponding path program 1 times [2024-11-23 18:28:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:22,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49057747] [2024-11-23 18:28:22,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:22,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:23,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:23,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49057747] [2024-11-23 18:28:23,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49057747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:23,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:23,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:28:23,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329193923] [2024-11-23 18:28:23,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:23,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:28:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:23,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:28:23,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:23,022 INFO L87 Difference]: Start difference. First operand 23498 states and 35809 transitions. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:23,173 INFO L93 Difference]: Finished difference Result 41653 states and 63269 transitions. [2024-11-23 18:28:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:28:23,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2024-11-23 18:28:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:23,221 INFO L225 Difference]: With dead ends: 41653 [2024-11-23 18:28:23,222 INFO L226 Difference]: Without dead ends: 20596 [2024-11-23 18:28:23,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:23,242 INFO L435 NwaCegarLoop]: 1201 mSDtfsCounter, 99 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:23,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 3458 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20596 states. [2024-11-23 18:28:23,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20596 to 20520. [2024-11-23 18:28:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20520 states, 20518 states have (on average 1.5270494200214446) internal successors, (31332), 20519 states have internal predecessors, (31332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20520 states to 20520 states and 31332 transitions. [2024-11-23 18:28:23,532 INFO L78 Accepts]: Start accepts. Automaton has 20520 states and 31332 transitions. Word has length 257 [2024-11-23 18:28:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:23,532 INFO L471 AbstractCegarLoop]: Abstraction has 20520 states and 31332 transitions. [2024-11-23 18:28:23,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 20520 states and 31332 transitions. [2024-11-23 18:28:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-23 18:28:23,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:23,558 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:23,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 18:28:23,558 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:23,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash -964879476, now seen corresponding path program 1 times [2024-11-23 18:28:23,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:23,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661862801] [2024-11-23 18:28:23,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:23,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661862801] [2024-11-23 18:28:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661862801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:23,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:23,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:23,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934845900] [2024-11-23 18:28:23,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:23,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:23,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:23,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:23,862 INFO L87 Difference]: Start difference. First operand 20520 states and 31332 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:24,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:24,061 INFO L93 Difference]: Finished difference Result 41843 states and 64786 transitions. [2024-11-23 18:28:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:24,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2024-11-23 18:28:24,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:24,125 INFO L225 Difference]: With dead ends: 41843 [2024-11-23 18:28:24,125 INFO L226 Difference]: Without dead ends: 28648 [2024-11-23 18:28:24,139 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 [2024-11-23 18:28:24,141 INFO L435 NwaCegarLoop]: 1417 mSDtfsCounter, 570 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:24,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 2222 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:24,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28648 states. [2024-11-23 18:28:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28648 to 26548. [2024-11-23 18:28:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26548 states, 26546 states have (on average 1.5477284713327808) internal successors, (41086), 26547 states have internal predecessors, (41086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26548 states to 26548 states and 41086 transitions. [2024-11-23 18:28:24,529 INFO L78 Accepts]: Start accepts. Automaton has 26548 states and 41086 transitions. Word has length 257 [2024-11-23 18:28:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:24,530 INFO L471 AbstractCegarLoop]: Abstraction has 26548 states and 41086 transitions. [2024-11-23 18:28:24,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 26548 states and 41086 transitions. [2024-11-23 18:28:24,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-23 18:28:24,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:24,547 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:24,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 18:28:24,547 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:24,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1136654317, now seen corresponding path program 1 times [2024-11-23 18:28:24,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:24,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508562036] [2024-11-23 18:28:24,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:24,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:24,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:24,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508562036] [2024-11-23 18:28:24,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508562036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:24,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:24,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:24,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888545810] [2024-11-23 18:28:24,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:24,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:24,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:24,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:24,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:24,838 INFO L87 Difference]: Start difference. First operand 26548 states and 41086 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:25,235 INFO L93 Difference]: Finished difference Result 77667 states and 120009 transitions. [2024-11-23 18:28:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:25,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 258 [2024-11-23 18:28:25,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:25,370 INFO L225 Difference]: With dead ends: 77667 [2024-11-23 18:28:25,370 INFO L226 Difference]: Without dead ends: 52002 [2024-11-23 18:28:25,398 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 [2024-11-23 18:28:25,398 INFO L435 NwaCegarLoop]: 2013 mSDtfsCounter, 897 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:25,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 3019 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:25,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52002 states. [2024-11-23 18:28:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52002 to 51978. [2024-11-23 18:28:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51978 states, 51976 states have (on average 1.5379405879636756) internal successors, (79936), 51977 states have internal predecessors, (79936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51978 states to 51978 states and 79936 transitions. [2024-11-23 18:28:26,376 INFO L78 Accepts]: Start accepts. Automaton has 51978 states and 79936 transitions. Word has length 258 [2024-11-23 18:28:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:26,378 INFO L471 AbstractCegarLoop]: Abstraction has 51978 states and 79936 transitions. [2024-11-23 18:28:26,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 51978 states and 79936 transitions. [2024-11-23 18:28:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-23 18:28:26,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:26,418 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:26,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 18:28:26,418 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:26,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:26,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1182471536, now seen corresponding path program 1 times [2024-11-23 18:28:26,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:26,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358886293] [2024-11-23 18:28:26,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:26,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:26,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:26,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358886293] [2024-11-23 18:28:26,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358886293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:26,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:26,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:28:26,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051797954] [2024-11-23 18:28:26,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:26,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:28:26,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:26,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:28:26,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:28:26,827 INFO L87 Difference]: Start difference. First operand 51978 states and 79936 transitions. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:27,551 INFO L93 Difference]: Finished difference Result 92671 states and 143023 transitions. [2024-11-23 18:28:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:28:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 258 [2024-11-23 18:28:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:27,611 INFO L225 Difference]: With dead ends: 92671 [2024-11-23 18:28:27,612 INFO L226 Difference]: Without dead ends: 51978 [2024-11-23 18:28:27,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:28:27,636 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 2482 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:27,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 1395 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 18:28:27,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51978 states. [2024-11-23 18:28:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51978 to 51978. [2024-11-23 18:28:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51978 states, 51976 states have (on average 1.529013390795752) internal successors, (79472), 51977 states have internal predecessors, (79472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51978 states to 51978 states and 79472 transitions. [2024-11-23 18:28:28,268 INFO L78 Accepts]: Start accepts. Automaton has 51978 states and 79472 transitions. Word has length 258 [2024-11-23 18:28:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:28,268 INFO L471 AbstractCegarLoop]: Abstraction has 51978 states and 79472 transitions. [2024-11-23 18:28:28,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 51978 states and 79472 transitions. [2024-11-23 18:28:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-23 18:28:28,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:28,294 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:28,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 18:28:28,295 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:28,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:28,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1845356875, now seen corresponding path program 1 times [2024-11-23 18:28:28,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:28,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293898112] [2024-11-23 18:28:28,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:28,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:28,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:28,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293898112] [2024-11-23 18:28:28,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293898112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:28,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:28,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:28:28,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433207965] [2024-11-23 18:28:28,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:28,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:28:28,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:28,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:28:28,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:28:28,987 INFO L87 Difference]: Start difference. First operand 51978 states and 79472 transitions. Second operand has 8 states, 8 states have (on average 32.25) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:30,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:30,633 INFO L93 Difference]: Finished difference Result 154540 states and 240180 transitions. [2024-11-23 18:28:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 18:28:30,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 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 258 [2024-11-23 18:28:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:31,005 INFO L225 Difference]: With dead ends: 154540 [2024-11-23 18:28:31,005 INFO L226 Difference]: Without dead ends: 114727 [2024-11-23 18:28:31,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2024-11-23 18:28:31,026 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 11556 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11556 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:31,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11556 Valid, 3357 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 18:28:31,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114727 states. [2024-11-23 18:28:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114727 to 64898. [2024-11-23 18:28:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64898 states, 64896 states have (on average 1.5091222879684418) internal successors, (97936), 64897 states have internal predecessors, (97936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64898 states to 64898 states and 97936 transitions. [2024-11-23 18:28:32,285 INFO L78 Accepts]: Start accepts. Automaton has 64898 states and 97936 transitions. Word has length 258 [2024-11-23 18:28:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:32,285 INFO L471 AbstractCegarLoop]: Abstraction has 64898 states and 97936 transitions. [2024-11-23 18:28:32,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 64898 states and 97936 transitions. [2024-11-23 18:28:32,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-23 18:28:32,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:32,313 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:32,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 18:28:32,314 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:32,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1235080640, now seen corresponding path program 1 times [2024-11-23 18:28:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:32,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660756669] [2024-11-23 18:28:32,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:32,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:33,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660756669] [2024-11-23 18:28:33,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660756669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:33,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:33,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:28:33,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85765757] [2024-11-23 18:28:33,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:33,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:28:33,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:33,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:28:33,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:33,360 INFO L87 Difference]: Start difference. First operand 64898 states and 97936 transitions. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:33,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:33,827 INFO L93 Difference]: Finished difference Result 183473 states and 275953 transitions. [2024-11-23 18:28:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:28:33,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 258 [2024-11-23 18:28:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:33,986 INFO L225 Difference]: With dead ends: 183473 [2024-11-23 18:28:33,986 INFO L226 Difference]: Without dead ends: 122095 [2024-11-23 18:28:34,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:34,047 INFO L435 NwaCegarLoop]: 2049 mSDtfsCounter, 986 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:34,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 5126 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122095 states. [2024-11-23 18:28:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122095 to 64283. [2024-11-23 18:28:35,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64283 states, 64281 states have (on average 1.51081968233226) internal successors, (97117), 64282 states have internal predecessors, (97117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64283 states to 64283 states and 97117 transitions. [2024-11-23 18:28:35,698 INFO L78 Accepts]: Start accepts. Automaton has 64283 states and 97117 transitions. Word has length 258 [2024-11-23 18:28:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:35,698 INFO L471 AbstractCegarLoop]: Abstraction has 64283 states and 97117 transitions. [2024-11-23 18:28:35,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 64283 states and 97117 transitions. [2024-11-23 18:28:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-23 18:28:35,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:35,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:35,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 18:28:35,726 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:35,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash -123595491, now seen corresponding path program 1 times [2024-11-23 18:28:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:35,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878220144] [2024-11-23 18:28:35,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:35,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:35,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878220144] [2024-11-23 18:28:35,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878220144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:35,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:35,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:35,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072065444] [2024-11-23 18:28:35,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:35,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:35,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:35,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:35,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:35,875 INFO L87 Difference]: Start difference. First operand 64283 states and 97117 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:36,568 INFO L93 Difference]: Finished difference Result 151128 states and 230396 transitions. [2024-11-23 18:28:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2024-11-23 18:28:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:36,685 INFO L225 Difference]: With dead ends: 151128 [2024-11-23 18:28:36,685 INFO L226 Difference]: Without dead ends: 100834 [2024-11-23 18:28:36,705 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 [2024-11-23 18:28:36,705 INFO L435 NwaCegarLoop]: 1391 mSDtfsCounter, 542 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:36,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 2199 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100834 states. [2024-11-23 18:28:37,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100834 to 93535. [2024-11-23 18:28:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93535 states, 93533 states have (on average 1.5271294623288036) internal successors, (142837), 93534 states have internal predecessors, (142837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:38,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93535 states to 93535 states and 142837 transitions. [2024-11-23 18:28:38,287 INFO L78 Accepts]: Start accepts. Automaton has 93535 states and 142837 transitions. Word has length 260 [2024-11-23 18:28:38,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:38,287 INFO L471 AbstractCegarLoop]: Abstraction has 93535 states and 142837 transitions. [2024-11-23 18:28:38,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:38,288 INFO L276 IsEmpty]: Start isEmpty. Operand 93535 states and 142837 transitions. [2024-11-23 18:28:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-23 18:28:38,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:38,313 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:38,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 18:28:38,314 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:38,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:38,314 INFO L85 PathProgramCache]: Analyzing trace with hash 83580039, now seen corresponding path program 1 times [2024-11-23 18:28:38,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:38,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873674022] [2024-11-23 18:28:38,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:38,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:38,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873674022] [2024-11-23 18:28:38,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873674022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:38,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:38,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547325180] [2024-11-23 18:28:38,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:38,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:38,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:38,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:38,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:38,465 INFO L87 Difference]: Start difference. First operand 93535 states and 142837 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:39,525 INFO L93 Difference]: Finished difference Result 237387 states and 366810 transitions. [2024-11-23 18:28:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2024-11-23 18:28:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:39,733 INFO L225 Difference]: With dead ends: 237387 [2024-11-23 18:28:39,733 INFO L226 Difference]: Without dead ends: 156842 [2024-11-23 18:28:39,773 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 [2024-11-23 18:28:39,774 INFO L435 NwaCegarLoop]: 1392 mSDtfsCounter, 527 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:39,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2221 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:39,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156842 states. [2024-11-23 18:28:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156842 to 144344. [2024-11-23 18:28:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144344 states, 144342 states have (on average 1.5509830818472794) internal successors, (223872), 144343 states have internal predecessors, (223872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144344 states to 144344 states and 223872 transitions. [2024-11-23 18:28:41,955 INFO L78 Accepts]: Start accepts. Automaton has 144344 states and 223872 transitions. Word has length 260 [2024-11-23 18:28:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:41,955 INFO L471 AbstractCegarLoop]: Abstraction has 144344 states and 223872 transitions. [2024-11-23 18:28:41,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 144344 states and 223872 transitions. [2024-11-23 18:28:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-23 18:28:42,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:42,003 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:42,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 18:28:42,003 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:42,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1494556123, now seen corresponding path program 1 times [2024-11-23 18:28:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:42,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675187785] [2024-11-23 18:28:42,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:42,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:43,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:43,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675187785] [2024-11-23 18:28:43,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675187785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:43,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:43,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:28:43,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348670138] [2024-11-23 18:28:43,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:43,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:28:43,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:43,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:28:43,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:43,132 INFO L87 Difference]: Start difference. First operand 144344 states and 223872 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:44,664 INFO L93 Difference]: Finished difference Result 415154 states and 644378 transitions. [2024-11-23 18:28:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:28:44,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2024-11-23 18:28:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:44,936 INFO L225 Difference]: With dead ends: 415154 [2024-11-23 18:28:44,936 INFO L226 Difference]: Without dead ends: 271723 [2024-11-23 18:28:45,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:28:45,011 INFO L435 NwaCegarLoop]: 1682 mSDtfsCounter, 1817 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:45,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 2657 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271723 states. [2024-11-23 18:28:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271723 to 271705. [2024-11-23 18:28:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271705 states, 271703 states have (on average 1.5447124249640232) internal successors, (419703), 271704 states have internal predecessors, (419703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271705 states to 271705 states and 419703 transitions. [2024-11-23 18:28:49,243 INFO L78 Accepts]: Start accepts. Automaton has 271705 states and 419703 transitions. Word has length 261 [2024-11-23 18:28:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:49,244 INFO L471 AbstractCegarLoop]: Abstraction has 271705 states and 419703 transitions. [2024-11-23 18:28:49,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:49,244 INFO L276 IsEmpty]: Start isEmpty. Operand 271705 states and 419703 transitions. [2024-11-23 18:28:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-23 18:28:49,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:49,284 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:28:49,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 18:28:49,285 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:49,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:49,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1970111600, now seen corresponding path program 1 times [2024-11-23 18:28:49,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:49,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442237227] [2024-11-23 18:28:49,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:49,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:28:49,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:49,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442237227] [2024-11-23 18:28:49,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442237227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:49,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:49,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:49,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488414363] [2024-11-23 18:28:49,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:49,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:49,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:49,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:49,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:49,414 INFO L87 Difference]: Start difference. First operand 271705 states and 419703 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:28:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:52,279 INFO L93 Difference]: Finished difference Result 756204 states and 1166512 transitions. [2024-11-23 18:28:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2024-11-23 18:28:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:52,966 INFO L225 Difference]: With dead ends: 756204 [2024-11-23 18:28:52,966 INFO L226 Difference]: Without dead ends: 513873 [2024-11-23 18:28:53,117 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 [2024-11-23 18:28:53,118 INFO L435 NwaCegarLoop]: 1035 mSDtfsCounter, 884 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:53,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 2062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:53,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513873 states. [2024-11-23 18:28:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513873 to 272522. [2024-11-23 18:28:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272522 states, 272520 states have (on average 1.5437692646411272) internal successors, (420708), 272521 states have internal predecessors, (420708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)