./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1 --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 4086756fe326e2f90904c763827ae3d38d44a78a9eb1422e3198b9e38a459658 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:09:25,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:09:25,130 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 23:09:25,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:09:25,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:09:25,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:09:25,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:09:25,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:09:25,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:09:25,158 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:09:25,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:09:25,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:09:25,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:09:25,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:09:25,159 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:09:25,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:09:25,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:09:25,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:09:25,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:09:25,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:09:25,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:09:25,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:09:25,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:09:25,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:09:25,160 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:09:25,160 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:09:25,160 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:09:25,160 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:09:25,160 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:09:25,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:09:25,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:09:25,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:09:25,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:09:25,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:09:25,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:09:25,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:09:25,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:09:25,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:09:25,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:09:25,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:09:25,161 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:09:25,161 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:09:25,161 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:09:25,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:09:25,162 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:09:25,162 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:09:25,162 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:09:25,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:09:25,162 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_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1 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 -> 4086756fe326e2f90904c763827ae3d38d44a78a9eb1422e3198b9e38a459658 [2024-12-01 23:09:25,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:09:25,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:09:25,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:09:25,402 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:09:25,402 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:09:25,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-12-01 23:09:28,049 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/data/e6df261d4/c266ca3379764b5da9fcd47405fd522f/FLAGb0d5924e1 [2024-12-01 23:09:28,248 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:09:28,249 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-12-01 23:09:28,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/data/e6df261d4/c266ca3379764b5da9fcd47405fd522f/FLAGb0d5924e1 [2024-12-01 23:09:28,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/data/e6df261d4/c266ca3379764b5da9fcd47405fd522f [2024-12-01 23:09:28,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:09:28,275 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:09:28,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:09:28,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:09:28,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:09:28,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a583f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28, skipping insertion in model container [2024-12-01 23:09:28,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,307 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:09:28,479 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_32f9a871-89ed-44f4-a60c-16c13d73d35b/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2024-12-01 23:09:28,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:09:28,523 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:09:28,573 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_32f9a871-89ed-44f4-a60c-16c13d73d35b/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2024-12-01 23:09:28,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:09:28,609 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:09:28,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28 WrapperNode [2024-12-01 23:09:28,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:09:28,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:09:28,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:09:28,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:09:28,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,657 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 688 [2024-12-01 23:09:28,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:09:28,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:09:28,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:09:28,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:09:28,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,684 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]. [2024-12-01 23:09:28,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,694 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:09:28,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:09:28,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:09:28,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:09:28,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (1/1) ... [2024-12-01 23:09:28,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:09:28,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:28,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:09:28,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f9a871-89ed-44f4-a60c-16c13d73d35b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:09:28,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:09:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:09:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:09:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:09:28,854 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:09:28,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:09:29,417 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-12-01 23:09:29,417 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:09:29,429 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:09:29,430 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-01 23:09:29,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:09:29 BoogieIcfgContainer [2024-12-01 23:09:29,430 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:09:29,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:09:29,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:09:29,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:09:29,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:09:28" (1/3) ... [2024-12-01 23:09:29,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5401e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:09:29, skipping insertion in model container [2024-12-01 23:09:29,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:09:28" (2/3) ... [2024-12-01 23:09:29,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5401e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:09:29, skipping insertion in model container [2024-12-01 23:09:29,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:09:29" (3/3) ... [2024-12-01 23:09:29,438 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-12-01 23:09:29,450 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:09:29,452 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 155 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-01 23:09:29,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:09:29,506 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;@591ae39b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:09:29,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 23:09:29,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-01 23:09:29,517 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:29,517 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] [2024-12-01 23:09:29,518 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:29,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1975649421, now seen corresponding path program 1 times [2024-12-01 23:09:29,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:29,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123634173] [2024-12-01 23:09:29,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:29,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:29,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123634173] [2024-12-01 23:09:29,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123634173] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:29,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:29,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:29,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579451898] [2024-12-01 23:09:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:29,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:29,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:29,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:29,923 INFO L87 Difference]: Start difference. First operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:30,019 INFO L93 Difference]: Finished difference Result 341 states and 571 transitions. [2024-12-01 23:09:30,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:30,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-01 23:09:30,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:30,030 INFO L225 Difference]: With dead ends: 341 [2024-12-01 23:09:30,030 INFO L226 Difference]: Without dead ends: 237 [2024-12-01 23:09:30,033 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 [2024-12-01 23:09:30,036 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 157 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:30,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 460 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:30,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-12-01 23:09:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2024-12-01 23:09:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5665236051502145) internal successors, (365), 233 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 365 transitions. [2024-12-01 23:09:30,090 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 365 transitions. Word has length 62 [2024-12-01 23:09:30,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:30,090 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 365 transitions. [2024-12-01 23:09:30,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 365 transitions. [2024-12-01 23:09:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 23:09:30,092 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:30,093 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] [2024-12-01 23:09:30,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 23:09:30,093 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:30,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1826541876, now seen corresponding path program 1 times [2024-12-01 23:09:30,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:30,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360198867] [2024-12-01 23:09:30,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:30,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:30,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:30,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360198867] [2024-12-01 23:09:30,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360198867] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:30,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:30,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:30,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331746893] [2024-12-01 23:09:30,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:30,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:30,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:30,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:30,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:30,255 INFO L87 Difference]: Start difference. First operand 234 states and 365 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:30,308 INFO L93 Difference]: Finished difference Result 572 states and 917 transitions. [2024-12-01 23:09:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:30,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-01 23:09:30,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:30,311 INFO L225 Difference]: With dead ends: 572 [2024-12-01 23:09:30,311 INFO L226 Difference]: Without dead ends: 395 [2024-12-01 23:09:30,312 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 [2024-12-01 23:09:30,312 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 133 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:30,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 430 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-12-01 23:09:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-12-01 23:09:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.5897435897435896) internal successors, (620), 390 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 620 transitions. [2024-12-01 23:09:30,334 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 620 transitions. Word has length 64 [2024-12-01 23:09:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:30,335 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 620 transitions. [2024-12-01 23:09:30,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 620 transitions. [2024-12-01 23:09:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-01 23:09:30,337 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:30,337 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] [2024-12-01 23:09:30,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 23:09:30,337 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:30,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:30,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1385775307, now seen corresponding path program 1 times [2024-12-01 23:09:30,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:30,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898855926] [2024-12-01 23:09:30,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:30,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:30,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898855926] [2024-12-01 23:09:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898855926] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:30,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:30,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:30,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919130264] [2024-12-01 23:09:30,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:30,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:30,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:30,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:30,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:30,490 INFO L87 Difference]: Start difference. First operand 391 states and 620 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:30,532 INFO L93 Difference]: Finished difference Result 1027 states and 1654 transitions. [2024-12-01 23:09:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:30,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-01 23:09:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:30,536 INFO L225 Difference]: With dead ends: 1027 [2024-12-01 23:09:30,536 INFO L226 Difference]: Without dead ends: 693 [2024-12-01 23:09:30,537 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 [2024-12-01 23:09:30,538 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:30,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 431 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:30,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-12-01 23:09:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 687. [2024-12-01 23:09:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.597667638483965) internal successors, (1096), 686 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1096 transitions. [2024-12-01 23:09:30,567 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1096 transitions. Word has length 66 [2024-12-01 23:09:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:30,567 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 1096 transitions. [2024-12-01 23:09:30,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1096 transitions. [2024-12-01 23:09:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-01 23:09:30,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:30,570 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] [2024-12-01 23:09:30,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 23:09:30,570 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:30,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash -190660810, now seen corresponding path program 1 times [2024-12-01 23:09:30,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:30,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196167575] [2024-12-01 23:09:30,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:30,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196167575] [2024-12-01 23:09:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196167575] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:30,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:09:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183526319] [2024-12-01 23:09:30,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:30,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:30,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:30,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:30,789 INFO L87 Difference]: Start difference. First operand 687 states and 1096 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:30,987 INFO L93 Difference]: Finished difference Result 2979 states and 4854 transitions. [2024-12-01 23:09:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:09:30,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-12-01 23:09:30,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:30,995 INFO L225 Difference]: With dead ends: 2979 [2024-12-01 23:09:30,995 INFO L226 Difference]: Without dead ends: 2349 [2024-12-01 23:09:30,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:09:30,997 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 1026 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:30,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1596 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2024-12-01 23:09:31,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1239. [2024-12-01 23:09:31,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.6082390953150243) internal successors, (1991), 1238 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1991 transitions. [2024-12-01 23:09:31,040 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1991 transitions. Word has length 68 [2024-12-01 23:09:31,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:31,040 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 1991 transitions. [2024-12-01 23:09:31,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1991 transitions. [2024-12-01 23:09:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-01 23:09:31,041 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:31,042 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] [2024-12-01 23:09:31,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 23:09:31,042 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:31,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:31,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1678021987, now seen corresponding path program 1 times [2024-12-01 23:09:31,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:31,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897460612] [2024-12-01 23:09:31,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:31,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:31,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:31,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897460612] [2024-12-01 23:09:31,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897460612] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:31,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:31,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:09:31,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549098909] [2024-12-01 23:09:31,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:31,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:09:31,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:31,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:09:31,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:09:31,184 INFO L87 Difference]: Start difference. First operand 1239 states and 1991 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:31,277 INFO L93 Difference]: Finished difference Result 3619 states and 5887 transitions. [2024-12-01 23:09:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:09:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-01 23:09:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:31,284 INFO L225 Difference]: With dead ends: 3619 [2024-12-01 23:09:31,284 INFO L226 Difference]: Without dead ends: 2437 [2024-12-01 23:09:31,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:31,287 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 456 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:31,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 787 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:31,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2024-12-01 23:09:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 1829. [2024-12-01 23:09:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.6148796498905909) internal successors, (2952), 1828 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2952 transitions. [2024-12-01 23:09:31,333 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2952 transitions. Word has length 69 [2024-12-01 23:09:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:31,333 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2952 transitions. [2024-12-01 23:09:31,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2952 transitions. [2024-12-01 23:09:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-01 23:09:31,335 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:31,335 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] [2024-12-01 23:09:31,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 23:09:31,335 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:31,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:31,336 INFO L85 PathProgramCache]: Analyzing trace with hash -537020195, now seen corresponding path program 1 times [2024-12-01 23:09:31,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:31,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985087926] [2024-12-01 23:09:31,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:31,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:31,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985087926] [2024-12-01 23:09:31,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985087926] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:31,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:31,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:09:31,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211589902] [2024-12-01 23:09:31,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:31,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:09:31,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:31,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:09:31,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:09:31,452 INFO L87 Difference]: Start difference. First operand 1829 states and 2952 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:31,555 INFO L93 Difference]: Finished difference Result 5313 states and 8631 transitions. [2024-12-01 23:09:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:09:31,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-12-01 23:09:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:31,564 INFO L225 Difference]: With dead ends: 5313 [2024-12-01 23:09:31,564 INFO L226 Difference]: Without dead ends: 3541 [2024-12-01 23:09:31,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:31,568 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 456 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:31,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 729 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2024-12-01 23:09:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 2673. [2024-12-01 23:09:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2672 states have (on average 1.6137724550898203) internal successors, (4312), 2672 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 4312 transitions. [2024-12-01 23:09:31,618 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 4312 transitions. Word has length 70 [2024-12-01 23:09:31,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:31,618 INFO L471 AbstractCegarLoop]: Abstraction has 2673 states and 4312 transitions. [2024-12-01 23:09:31,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 4312 transitions. [2024-12-01 23:09:31,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-01 23:09:31,620 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:31,620 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] [2024-12-01 23:09:31,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 23:09:31,620 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:31,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash 478855012, now seen corresponding path program 1 times [2024-12-01 23:09:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974751296] [2024-12-01 23:09:31,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:31,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974751296] [2024-12-01 23:09:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974751296] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:31,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:31,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:09:31,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19856144] [2024-12-01 23:09:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:31,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:09:31,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:31,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:09:31,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:09:31,706 INFO L87 Difference]: Start difference. First operand 2673 states and 4312 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:31,798 INFO L93 Difference]: Finished difference Result 7713 states and 12507 transitions. [2024-12-01 23:09:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:09:31,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-12-01 23:09:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:31,809 INFO L225 Difference]: With dead ends: 7713 [2024-12-01 23:09:31,809 INFO L226 Difference]: Without dead ends: 5097 [2024-12-01 23:09:31,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:31,812 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 454 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:31,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 772 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2024-12-01 23:09:31,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 3869. [2024-12-01 23:09:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 3868 states have (on average 1.6116856256463288) internal successors, (6234), 3868 states have internal predecessors, (6234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 6234 transitions. [2024-12-01 23:09:31,877 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 6234 transitions. Word has length 71 [2024-12-01 23:09:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:31,877 INFO L471 AbstractCegarLoop]: Abstraction has 3869 states and 6234 transitions. [2024-12-01 23:09:31,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 6234 transitions. [2024-12-01 23:09:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-01 23:09:31,878 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:31,878 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] [2024-12-01 23:09:31,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 23:09:31,879 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:31,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:31,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1637619353, now seen corresponding path program 1 times [2024-12-01 23:09:31,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:31,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187909347] [2024-12-01 23:09:31,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:31,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:31,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187909347] [2024-12-01 23:09:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187909347] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:31,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:31,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43180775] [2024-12-01 23:09:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:31,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:31,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:31,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:31,940 INFO L87 Difference]: Start difference. First operand 3869 states and 6234 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:31,988 INFO L93 Difference]: Finished difference Result 8646 states and 14040 transitions. [2024-12-01 23:09:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:31,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-12-01 23:09:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:31,999 INFO L225 Difference]: With dead ends: 8646 [2024-12-01 23:09:31,999 INFO L226 Difference]: Without dead ends: 5881 [2024-12-01 23:09:32,002 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 [2024-12-01 23:09:32,003 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 138 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:32,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 536 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:32,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2024-12-01 23:09:32,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5879. [2024-12-01 23:09:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5879 states, 5878 states have (on average 1.6124532153793807) internal successors, (9478), 5878 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 9478 transitions. [2024-12-01 23:09:32,098 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 9478 transitions. Word has length 72 [2024-12-01 23:09:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:32,098 INFO L471 AbstractCegarLoop]: Abstraction has 5879 states and 9478 transitions. [2024-12-01 23:09:32,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 9478 transitions. [2024-12-01 23:09:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-01 23:09:32,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:32,099 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] [2024-12-01 23:09:32,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 23:09:32,099 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:32,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1419254461, now seen corresponding path program 1 times [2024-12-01 23:09:32,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:32,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569213087] [2024-12-01 23:09:32,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:32,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:32,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569213087] [2024-12-01 23:09:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569213087] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:32,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:32,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:32,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475916134] [2024-12-01 23:09:32,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:32,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:32,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:32,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:32,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:32,157 INFO L87 Difference]: Start difference. First operand 5879 states and 9478 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:32,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:32,202 INFO L93 Difference]: Finished difference Result 12993 states and 20995 transitions. [2024-12-01 23:09:32,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:32,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-12-01 23:09:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:32,226 INFO L225 Difference]: With dead ends: 12993 [2024-12-01 23:09:32,226 INFO L226 Difference]: Without dead ends: 8823 [2024-12-01 23:09:32,230 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 [2024-12-01 23:09:32,230 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 126 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:32,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 481 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8823 states. [2024-12-01 23:09:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8823 to 8821. [2024-12-01 23:09:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 8820 states have (on average 1.6052154195011339) internal successors, (14158), 8820 states have internal predecessors, (14158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 14158 transitions. [2024-12-01 23:09:32,355 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 14158 transitions. Word has length 72 [2024-12-01 23:09:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:32,355 INFO L471 AbstractCegarLoop]: Abstraction has 8821 states and 14158 transitions. [2024-12-01 23:09:32,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 14158 transitions. [2024-12-01 23:09:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-01 23:09:32,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:32,355 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] [2024-12-01 23:09:32,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 23:09:32,356 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:32,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash 569279253, now seen corresponding path program 1 times [2024-12-01 23:09:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:32,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845035196] [2024-12-01 23:09:32,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:32,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:32,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:32,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845035196] [2024-12-01 23:09:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845035196] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:32,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:32,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510849623] [2024-12-01 23:09:32,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:32,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:32,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:32,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:32,413 INFO L87 Difference]: Start difference. First operand 8821 states and 14158 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:32,497 INFO L93 Difference]: Finished difference Result 19170 states and 30844 transitions. [2024-12-01 23:09:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:32,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-12-01 23:09:32,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:32,516 INFO L225 Difference]: With dead ends: 19170 [2024-12-01 23:09:32,516 INFO L226 Difference]: Without dead ends: 12906 [2024-12-01 23:09:32,520 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 [2024-12-01 23:09:32,521 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 132 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:32,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 521 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2024-12-01 23:09:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 12904. [2024-12-01 23:09:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12904 states, 12903 states have (on average 1.5969154460203054) internal successors, (20605), 12903 states have internal predecessors, (20605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12904 states to 12904 states and 20605 transitions. [2024-12-01 23:09:32,681 INFO L78 Accepts]: Start accepts. Automaton has 12904 states and 20605 transitions. Word has length 72 [2024-12-01 23:09:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:32,681 INFO L471 AbstractCegarLoop]: Abstraction has 12904 states and 20605 transitions. [2024-12-01 23:09:32,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 12904 states and 20605 transitions. [2024-12-01 23:09:32,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-01 23:09:32,682 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:32,682 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] [2024-12-01 23:09:32,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 23:09:32,682 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:32,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash -899144939, now seen corresponding path program 1 times [2024-12-01 23:09:32,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:32,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743640936] [2024-12-01 23:09:32,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:32,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:32,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:32,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743640936] [2024-12-01 23:09:32,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743640936] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:32,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:32,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:09:32,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930889423] [2024-12-01 23:09:32,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:32,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:32,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:32,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:32,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:32,893 INFO L87 Difference]: Start difference. First operand 12904 states and 20605 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:33,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:33,036 INFO L93 Difference]: Finished difference Result 25719 states and 41086 transitions. [2024-12-01 23:09:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:09:33,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-12-01 23:09:33,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:33,062 INFO L225 Difference]: With dead ends: 25719 [2024-12-01 23:09:33,062 INFO L226 Difference]: Without dead ends: 12906 [2024-12-01 23:09:33,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:09:33,075 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 257 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:33,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 635 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2024-12-01 23:09:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 12904. [2024-12-01 23:09:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12904 states, 12903 states have (on average 1.5872277764860885) internal successors, (20480), 12903 states have internal predecessors, (20480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12904 states to 12904 states and 20480 transitions. [2024-12-01 23:09:33,271 INFO L78 Accepts]: Start accepts. Automaton has 12904 states and 20480 transitions. Word has length 73 [2024-12-01 23:09:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:33,272 INFO L471 AbstractCegarLoop]: Abstraction has 12904 states and 20480 transitions. [2024-12-01 23:09:33,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:33,272 INFO L276 IsEmpty]: Start isEmpty. Operand 12904 states and 20480 transitions. [2024-12-01 23:09:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-01 23:09:33,272 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:33,272 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] [2024-12-01 23:09:33,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-01 23:09:33,273 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:33,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:33,273 INFO L85 PathProgramCache]: Analyzing trace with hash -764385937, now seen corresponding path program 1 times [2024-12-01 23:09:33,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:33,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016557052] [2024-12-01 23:09:33,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:33,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:33,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:33,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016557052] [2024-12-01 23:09:33,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016557052] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:33,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:33,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:09:33,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895977198] [2024-12-01 23:09:33,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:33,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:33,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:33,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:33,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:33,566 INFO L87 Difference]: Start difference. First operand 12904 states and 20480 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:33,769 INFO L93 Difference]: Finished difference Result 36939 states and 58780 transitions. [2024-12-01 23:09:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:09:33,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-01 23:09:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:33,828 INFO L225 Difference]: With dead ends: 36939 [2024-12-01 23:09:33,828 INFO L226 Difference]: Without dead ends: 24126 [2024-12-01 23:09:33,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:09:33,842 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 379 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:33,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 641 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24126 states. [2024-12-01 23:09:34,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24126 to 24124. [2024-12-01 23:09:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24124 states, 24123 states have (on average 1.576711022675455) internal successors, (38035), 24123 states have internal predecessors, (38035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:34,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24124 states to 24124 states and 38035 transitions. [2024-12-01 23:09:34,194 INFO L78 Accepts]: Start accepts. Automaton has 24124 states and 38035 transitions. Word has length 76 [2024-12-01 23:09:34,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:34,194 INFO L471 AbstractCegarLoop]: Abstraction has 24124 states and 38035 transitions. [2024-12-01 23:09:34,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand 24124 states and 38035 transitions. [2024-12-01 23:09:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-01 23:09:34,195 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:34,195 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] [2024-12-01 23:09:34,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-01 23:09:34,195 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:34,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:34,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2071930450, now seen corresponding path program 1 times [2024-12-01 23:09:34,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:34,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129185384] [2024-12-01 23:09:34,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:34,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:34,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:34,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129185384] [2024-12-01 23:09:34,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129185384] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:34,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:34,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:09:34,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014645313] [2024-12-01 23:09:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:34,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:34,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:34,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:34,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:34,622 INFO L87 Difference]: Start difference. First operand 24124 states and 38035 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:34,717 INFO L93 Difference]: Finished difference Result 24850 states and 39122 transitions. [2024-12-01 23:09:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:09:34,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-01 23:09:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:34,759 INFO L225 Difference]: With dead ends: 24850 [2024-12-01 23:09:34,760 INFO L226 Difference]: Without dead ends: 24848 [2024-12-01 23:09:34,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:34,767 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:34,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 904 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:34,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24848 states. [2024-12-01 23:09:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24848 to 24848. [2024-12-01 23:09:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24848 states, 24847 states have (on average 1.5595444118002173) internal successors, (38750), 24847 states have internal predecessors, (38750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24848 states to 24848 states and 38750 transitions. [2024-12-01 23:09:35,078 INFO L78 Accepts]: Start accepts. Automaton has 24848 states and 38750 transitions. Word has length 77 [2024-12-01 23:09:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:35,079 INFO L471 AbstractCegarLoop]: Abstraction has 24848 states and 38750 transitions. [2024-12-01 23:09:35,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 24848 states and 38750 transitions. [2024-12-01 23:09:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-01 23:09:35,080 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:35,081 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:35,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 23:09:35,081 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:35,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash 555059603, now seen corresponding path program 1 times [2024-12-01 23:09:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:35,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494632279] [2024-12-01 23:09:35,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:35,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-01 23:09:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494632279] [2024-12-01 23:09:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494632279] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:35,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:35,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:09:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207527272] [2024-12-01 23:09:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:35,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:35,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:35,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:35,272 INFO L87 Difference]: Start difference. First operand 24848 states and 38750 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:35,498 INFO L93 Difference]: Finished difference Result 60736 states and 95072 transitions. [2024-12-01 23:09:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:09:35,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-01 23:09:35,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:35,568 INFO L225 Difference]: With dead ends: 60736 [2024-12-01 23:09:35,568 INFO L226 Difference]: Without dead ends: 48774 [2024-12-01 23:09:35,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:09:35,586 INFO L435 NwaCegarLoop]: 368 mSDtfsCounter, 575 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:35,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1049 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48774 states. [2024-12-01 23:09:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48774 to 38128. [2024-12-01 23:09:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38128 states, 38127 states have (on average 1.5578986020405488) internal successors, (59398), 38127 states have internal predecessors, (59398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38128 states to 38128 states and 59398 transitions. [2024-12-01 23:09:36,236 INFO L78 Accepts]: Start accepts. Automaton has 38128 states and 59398 transitions. Word has length 103 [2024-12-01 23:09:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:36,237 INFO L471 AbstractCegarLoop]: Abstraction has 38128 states and 59398 transitions. [2024-12-01 23:09:36,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 38128 states and 59398 transitions. [2024-12-01 23:09:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-01 23:09:36,239 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:36,240 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:36,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-01 23:09:36,240 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:36,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 773424495, now seen corresponding path program 1 times [2024-12-01 23:09:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:36,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333581813] [2024-12-01 23:09:36,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 23:09:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333581813] [2024-12-01 23:09:36,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333581813] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:36,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:36,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:09:36,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724865835] [2024-12-01 23:09:36,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:36,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:36,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:36,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:36,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:36,450 INFO L87 Difference]: Start difference. First operand 38128 states and 59398 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:36,752 INFO L93 Difference]: Finished difference Result 68122 states and 106644 transitions. [2024-12-01 23:09:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:09:36,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-01 23:09:36,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:36,844 INFO L225 Difference]: With dead ends: 68122 [2024-12-01 23:09:36,844 INFO L226 Difference]: Without dead ends: 56390 [2024-12-01 23:09:36,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:09:36,866 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 586 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:36,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1046 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56390 states. [2024-12-01 23:09:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56390 to 51632. [2024-12-01 23:09:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51632 states, 51631 states have (on average 1.559605663264318) internal successors, (80524), 51631 states have internal predecessors, (80524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51632 states to 51632 states and 80524 transitions. [2024-12-01 23:09:37,562 INFO L78 Accepts]: Start accepts. Automaton has 51632 states and 80524 transitions. Word has length 103 [2024-12-01 23:09:37,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:37,562 INFO L471 AbstractCegarLoop]: Abstraction has 51632 states and 80524 transitions. [2024-12-01 23:09:37,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:37,562 INFO L276 IsEmpty]: Start isEmpty. Operand 51632 states and 80524 transitions. [2024-12-01 23:09:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-01 23:09:37,563 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:37,563 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:37,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-01 23:09:37,563 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:37,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1533009087, now seen corresponding path program 1 times [2024-12-01 23:09:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:37,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078071587] [2024-12-01 23:09:37,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:37,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:09:37,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:37,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078071587] [2024-12-01 23:09:37,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078071587] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:37,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:37,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:09:37,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137626627] [2024-12-01 23:09:37,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:37,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:37,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:37,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:37,833 INFO L87 Difference]: Start difference. First operand 51632 states and 80524 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:38,093 INFO L93 Difference]: Finished difference Result 72782 states and 113944 transitions. [2024-12-01 23:09:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:09:38,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-01 23:09:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:38,185 INFO L225 Difference]: With dead ends: 72782 [2024-12-01 23:09:38,185 INFO L226 Difference]: Without dead ends: 61050 [2024-12-01 23:09:38,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:09:38,205 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 581 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:38,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1150 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61050 states. [2024-12-01 23:09:38,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61050 to 59156. [2024-12-01 23:09:38,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59156 states, 59155 states have (on average 1.5613219508072014) internal successors, (92360), 59155 states have internal predecessors, (92360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:38,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59156 states to 59156 states and 92360 transitions. [2024-12-01 23:09:38,917 INFO L78 Accepts]: Start accepts. Automaton has 59156 states and 92360 transitions. Word has length 103 [2024-12-01 23:09:38,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:38,917 INFO L471 AbstractCegarLoop]: Abstraction has 59156 states and 92360 transitions. [2024-12-01 23:09:38,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:38,917 INFO L276 IsEmpty]: Start isEmpty. Operand 59156 states and 92360 transitions. [2024-12-01 23:09:38,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-01 23:09:38,919 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:38,919 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:38,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-01 23:09:38,920 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:38,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:38,920 INFO L85 PathProgramCache]: Analyzing trace with hash -35525664, now seen corresponding path program 1 times [2024-12-01 23:09:38,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:38,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100572432] [2024-12-01 23:09:38,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:38,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-01 23:09:39,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:39,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100572432] [2024-12-01 23:09:39,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100572432] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:39,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:39,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:09:39,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263727824] [2024-12-01 23:09:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:39,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:09:39,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:39,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:09:39,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:09:39,099 INFO L87 Difference]: Start difference. First operand 59156 states and 92360 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:39,378 INFO L93 Difference]: Finished difference Result 96279 states and 151019 transitions. [2024-12-01 23:09:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:09:39,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-01 23:09:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:39,459 INFO L225 Difference]: With dead ends: 96279 [2024-12-01 23:09:39,459 INFO L226 Difference]: Without dead ends: 76701 [2024-12-01 23:09:39,479 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 [2024-12-01 23:09:39,480 INFO L435 NwaCegarLoop]: 370 mSDtfsCounter, 266 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:39,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 737 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:39,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76701 states. [2024-12-01 23:09:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76701 to 74809. [2024-12-01 23:09:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74809 states, 74808 states have (on average 1.5616511603037109) internal successors, (116824), 74808 states have internal predecessors, (116824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74809 states to 74809 states and 116824 transitions. [2024-12-01 23:09:40,332 INFO L78 Accepts]: Start accepts. Automaton has 74809 states and 116824 transitions. Word has length 104 [2024-12-01 23:09:40,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:40,333 INFO L471 AbstractCegarLoop]: Abstraction has 74809 states and 116824 transitions. [2024-12-01 23:09:40,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 74809 states and 116824 transitions. [2024-12-01 23:09:40,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-01 23:09:40,334 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:40,334 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:40,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-01 23:09:40,335 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:40,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:40,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1812785472, now seen corresponding path program 1 times [2024-12-01 23:09:40,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:40,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074894696] [2024-12-01 23:09:40,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-01 23:09:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:40,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074894696] [2024-12-01 23:09:40,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074894696] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:40,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:40,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:40,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063964890] [2024-12-01 23:09:40,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:40,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:40,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:40,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:40,410 INFO L87 Difference]: Start difference. First operand 74809 states and 116824 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:40,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:40,702 INFO L93 Difference]: Finished difference Result 161251 states and 252607 transitions. [2024-12-01 23:09:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:40,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-01 23:09:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:40,832 INFO L225 Difference]: With dead ends: 161251 [2024-12-01 23:09:40,832 INFO L226 Difference]: Without dead ends: 126189 [2024-12-01 23:09:40,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:40,864 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 117 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:40,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 428 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:40,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126189 states. [2024-12-01 23:09:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126189 to 125911. [2024-12-01 23:09:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125911 states, 125910 states have (on average 1.5617822253990945) internal successors, (196644), 125910 states have internal predecessors, (196644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125911 states to 125911 states and 196644 transitions. [2024-12-01 23:09:42,560 INFO L78 Accepts]: Start accepts. Automaton has 125911 states and 196644 transitions. Word has length 104 [2024-12-01 23:09:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:42,561 INFO L471 AbstractCegarLoop]: Abstraction has 125911 states and 196644 transitions. [2024-12-01 23:09:42,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 125911 states and 196644 transitions. [2024-12-01 23:09:42,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-01 23:09:42,562 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:42,562 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:42,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-01 23:09:42,563 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:42,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:42,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1057251553, now seen corresponding path program 1 times [2024-12-01 23:09:42,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:42,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392381911] [2024-12-01 23:09:42,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:42,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:42,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392381911] [2024-12-01 23:09:42,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392381911] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:42,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:42,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226876495] [2024-12-01 23:09:42,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:42,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:42,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:42,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:42,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:42,645 INFO L87 Difference]: Start difference. First operand 125911 states and 196644 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:43,381 INFO L93 Difference]: Finished difference Result 370557 states and 578073 transitions. [2024-12-01 23:09:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:43,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-01 23:09:43,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:43,627 INFO L225 Difference]: With dead ends: 370557 [2024-12-01 23:09:43,627 INFO L226 Difference]: Without dead ends: 244737 [2024-12-01 23:09:43,691 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 [2024-12-01 23:09:43,692 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 178 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:43,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 561 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244737 states. [2024-12-01 23:09:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244737 to 244735. [2024-12-01 23:09:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244735 states, 244734 states have (on average 1.5500298283033824) internal successors, (379345), 244734 states have internal predecessors, (379345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244735 states to 244735 states and 379345 transitions. [2024-12-01 23:09:46,630 INFO L78 Accepts]: Start accepts. Automaton has 244735 states and 379345 transitions. Word has length 105 [2024-12-01 23:09:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:46,630 INFO L471 AbstractCegarLoop]: Abstraction has 244735 states and 379345 transitions. [2024-12-01 23:09:46,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 244735 states and 379345 transitions. [2024-12-01 23:09:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-01 23:09:46,631 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:46,631 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:46,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-01 23:09:46,632 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:46,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:46,632 INFO L85 PathProgramCache]: Analyzing trace with hash 735650069, now seen corresponding path program 1 times [2024-12-01 23:09:46,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:46,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307087759] [2024-12-01 23:09:46,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:46,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:46,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307087759] [2024-12-01 23:09:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307087759] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:46,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:46,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:46,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710173869] [2024-12-01 23:09:46,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:46,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:46,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:46,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:46,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:46,699 INFO L87 Difference]: Start difference. First operand 244735 states and 379345 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:48,638 INFO L93 Difference]: Finished difference Result 719881 states and 1114359 transitions. [2024-12-01 23:09:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:48,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-01 23:09:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:49,168 INFO L225 Difference]: With dead ends: 719881 [2024-12-01 23:09:49,168 INFO L226 Difference]: Without dead ends: 475287 [2024-12-01 23:09:49,236 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 [2024-12-01 23:09:49,236 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 159 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:49,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 524 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475287 states. [2024-12-01 23:09:53,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475287 to 475285. [2024-12-01 23:09:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475285 states, 475284 states have (on average 1.5375670125651189) internal successors, (730781), 475284 states have internal predecessors, (730781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475285 states to 475285 states and 730781 transitions. [2024-12-01 23:09:54,704 INFO L78 Accepts]: Start accepts. Automaton has 475285 states and 730781 transitions. Word has length 105 [2024-12-01 23:09:54,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:54,704 INFO L471 AbstractCegarLoop]: Abstraction has 475285 states and 730781 transitions. [2024-12-01 23:09:54,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 475285 states and 730781 transitions. [2024-12-01 23:09:54,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-01 23:09:54,708 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:54,708 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:54,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-01 23:09:54,708 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:54,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1039451489, now seen corresponding path program 1 times [2024-12-01 23:09:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:54,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027378007] [2024-12-01 23:09:54,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:09:55,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:55,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027378007] [2024-12-01 23:09:55,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027378007] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:55,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:55,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:09:55,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468643689] [2024-12-01 23:09:55,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:55,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:09:55,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:55,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:09:55,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:09:55,192 INFO L87 Difference]: Start difference. First operand 475285 states and 730781 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:09:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:57,560 INFO L93 Difference]: Finished difference Result 1017079 states and 1568137 transitions. [2024-12-01 23:09:57,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:09:57,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-01 23:09:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:58,384 INFO L225 Difference]: With dead ends: 1017079 [2024-12-01 23:09:58,384 INFO L226 Difference]: Without dead ends: 751601 [2024-12-01 23:09:58,472 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 [2024-12-01 23:09:58,472 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 117 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:58,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 423 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751601 states. [2024-12-01 23:10:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751601 to 749995. [2024-12-01 23:10:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749995 states, 749994 states have (on average 1.5376483011864095) internal successors, (1153227), 749994 states have internal predecessors, (1153227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749995 states to 749995 states and 1153227 transitions. [2024-12-01 23:10:06,277 INFO L78 Accepts]: Start accepts. Automaton has 749995 states and 1153227 transitions. Word has length 105 [2024-12-01 23:10:06,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:06,277 INFO L471 AbstractCegarLoop]: Abstraction has 749995 states and 1153227 transitions. [2024-12-01 23:10:06,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 749995 states and 1153227 transitions. [2024-12-01 23:10:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-01 23:10:06,283 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:06,283 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:06,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-01 23:10:06,283 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:10:06,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:06,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2043525592, now seen corresponding path program 1 times [2024-12-01 23:10:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:06,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594574369] [2024-12-01 23:10:06,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:10:06,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:06,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594574369] [2024-12-01 23:10:06,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594574369] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:06,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:10:06,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:10:06,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728537522] [2024-12-01 23:10:06,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:06,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:10:06,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:06,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:10:06,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:10:06,384 INFO L87 Difference]: Start difference. First operand 749995 states and 1153227 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:10,813 INFO L93 Difference]: Finished difference Result 1252445 states and 1931342 transitions. [2024-12-01 23:10:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:10:10,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-01 23:10:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:12,460 INFO L225 Difference]: With dead ends: 1252445 [2024-12-01 23:10:12,460 INFO L226 Difference]: Without dead ends: 978019 [2024-12-01 23:10:12,587 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 [2024-12-01 23:10:12,589 INFO L435 NwaCegarLoop]: 372 mSDtfsCounter, 264 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:12,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 739 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:10:13,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978019 states. [2024-12-01 23:10:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978019 to 920547. [2024-12-01 23:10:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920547 states, 920546 states have (on average 1.535322515116029) internal successors, (1413335), 920546 states have internal predecessors, (1413335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920547 states to 920547 states and 1413335 transitions. [2024-12-01 23:10:23,338 INFO L78 Accepts]: Start accepts. Automaton has 920547 states and 1413335 transitions. Word has length 105 [2024-12-01 23:10:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:23,338 INFO L471 AbstractCegarLoop]: Abstraction has 920547 states and 1413335 transitions. [2024-12-01 23:10:23,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 920547 states and 1413335 transitions. [2024-12-01 23:10:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-01 23:10:23,341 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:23,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:23,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-01 23:10:23,341 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:10:23,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:23,341 INFO L85 PathProgramCache]: Analyzing trace with hash -445027353, now seen corresponding path program 1 times [2024-12-01 23:10:23,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:23,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878495165] [2024-12-01 23:10:23,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:10:23,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:23,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878495165] [2024-12-01 23:10:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878495165] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:23,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:10:23,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:10:23,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477263165] [2024-12-01 23:10:23,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:23,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:10:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:23,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:10:23,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:10:23,402 INFO L87 Difference]: Start difference. First operand 920547 states and 1413335 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:29,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:29,235 INFO L93 Difference]: Finished difference Result 2279477 states and 3513679 transitions. [2024-12-01 23:10:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:10:29,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-12-01 23:10:29,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:30,926 INFO L225 Difference]: With dead ends: 2279477 [2024-12-01 23:10:30,926 INFO L226 Difference]: Without dead ends: 1359205 [2024-12-01 23:10:31,155 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 [2024-12-01 23:10:31,156 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 140 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:31,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 446 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:10:31,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359205 states.