./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-34.i --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_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/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_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/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_bbc7d955-b2c4-47ae-8e44-d52364b07c91/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 fab5880c6add66d25f9dda30d1a24e14051ec77fdefc3f83f67a5e43bacfe3df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:17:25,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:17:25,436 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:17:25,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:17:25,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:17:25,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:17:25,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:17:25,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:17:25,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:17:25,463 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:17:25,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:17:25,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:17:25,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:17:25,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:17:25,464 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:17:25,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:17:25,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:17:25,464 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:17:25,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:17:25,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:17:25,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:17:25,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:17:25,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:17:25,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:17:25,465 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:17:25,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:17:25,465 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:17:25,465 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:17:25,465 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:17:25,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:17:25,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:17:25,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:17:25,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:17:25,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:17:25,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:17:25,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:17:25,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:17:25,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:17:25,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:17:25,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:17:25,467 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:17:25,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:17:25,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:17:25,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:17:25,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:17:25,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:17:25,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:17:25,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:17:25,467 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_bbc7d955-b2c4-47ae-8e44-d52364b07c91/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 -> fab5880c6add66d25f9dda30d1a24e14051ec77fdefc3f83f67a5e43bacfe3df [2024-12-02 14:17:25,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:17:25,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:17:25,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:17:25,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:17:25,686 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:17:25,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-34.i [2024-12-02 14:17:28,318 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/data/f78e2b5bd/1a9693e0bced41dabc81067f5b2ecf3f/FLAG3bdbbc378 [2024-12-02 14:17:28,557 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:17:28,557 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-34.i [2024-12-02 14:17:28,566 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/data/f78e2b5bd/1a9693e0bced41dabc81067f5b2ecf3f/FLAG3bdbbc378 [2024-12-02 14:17:28,898 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/data/f78e2b5bd/1a9693e0bced41dabc81067f5b2ecf3f [2024-12-02 14:17:28,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:17:28,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:17:28,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:17:28,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:17:28,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:17:28,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:17:28" (1/1) ... [2024-12-02 14:17:28,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f069b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:28, skipping insertion in model container [2024-12-02 14:17:28,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:17:28" (1/1) ... [2024-12-02 14:17:28,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:17:29,054 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_bbc7d955-b2c4-47ae-8e44-d52364b07c91/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-34.i[919,932] [2024-12-02 14:17:29,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:17:29,125 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:17:29,135 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_bbc7d955-b2c4-47ae-8e44-d52364b07c91/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-34.i[919,932] [2024-12-02 14:17:29,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:17:29,182 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:17:29,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29 WrapperNode [2024-12-02 14:17:29,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:17:29,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:17:29,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:17:29,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:17:29,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,230 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 247 [2024-12-02 14:17:29,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:17:29,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:17:29,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:17:29,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:17:29,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,258 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]. [2024-12-02 14:17:29,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,266 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:17:29,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:17:29,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:17:29,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:17:29,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (1/1) ... [2024-12-02 14:17:29,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:17:29,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:17:29,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:17:29,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:17:29,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:17:29,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:17:29,335 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:17:29,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:17:29,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:17:29,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:17:29,408 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:17:29,409 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:17:29,792 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-12-02 14:17:29,793 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:17:29,803 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:17:29,803 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:17:29,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:17:29 BoogieIcfgContainer [2024-12-02 14:17:29,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:17:29,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:17:29,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:17:29,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:17:29,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:17:28" (1/3) ... [2024-12-02 14:17:29,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46cefdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:17:29, skipping insertion in model container [2024-12-02 14:17:29,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:29" (2/3) ... [2024-12-02 14:17:29,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46cefdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:17:29, skipping insertion in model container [2024-12-02 14:17:29,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:17:29" (3/3) ... [2024-12-02 14:17:29,813 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-34.i [2024-12-02 14:17:29,828 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:17:29,830 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-34.i that has 2 procedures, 103 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:17:29,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:17:29,896 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;@6465f10c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:17:29,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:17:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 74 states have internal predecessors, (109), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 14:17:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 14:17:29,912 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:29,912 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:29,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:29,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash -558081827, now seen corresponding path program 1 times [2024-12-02 14:17:29,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:29,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611812021] [2024-12-02 14:17:29,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:29,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-12-02 14:17:30,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:17:30,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611812021] [2024-12-02 14:17:30,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611812021] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:17:30,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155675087] [2024-12-02 14:17:30,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:30,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:17:30,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:17:30,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:17:30,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:17:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:30,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:17:30,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:17:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-12-02 14:17:30,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:17:30,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155675087] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:17:30,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:17:30,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 14:17:30,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280899875] [2024-12-02 14:17:30,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:17:30,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:17:30,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:17:30,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:17:30,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:17:30,406 INFO L87 Difference]: Start difference. First operand has 103 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 74 states have internal predecessors, (109), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:17:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:17:30,432 INFO L93 Difference]: Finished difference Result 199 states and 347 transitions. [2024-12-02 14:17:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:17:30,434 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 179 [2024-12-02 14:17:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:17:30,440 INFO L225 Difference]: With dead ends: 199 [2024-12-02 14:17:30,440 INFO L226 Difference]: Without dead ends: 99 [2024-12-02 14:17:30,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:17:30,445 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:17:30,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:17:30,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-02 14:17:30,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-12-02 14:17:30,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.457142857142857) internal successors, (102), 70 states have internal predecessors, (102), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 14:17:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 156 transitions. [2024-12-02 14:17:30,482 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 156 transitions. Word has length 179 [2024-12-02 14:17:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:17:30,482 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 156 transitions. [2024-12-02 14:17:30,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:17:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 156 transitions. [2024-12-02 14:17:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 14:17:30,486 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:30,486 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:30,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:17:30,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:17:30,687 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:30,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:30,688 INFO L85 PathProgramCache]: Analyzing trace with hash -14833821, now seen corresponding path program 1 times [2024-12-02 14:17:30,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:30,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975990619] [2024-12-02 14:17:30,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:30,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:17:31,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:17:31,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975990619] [2024-12-02 14:17:31,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975990619] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:17:31,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:17:31,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:17:31,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464693600] [2024-12-02 14:17:31,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:17:31,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:17:31,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:17:31,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:17:31,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:17:31,216 INFO L87 Difference]: Start difference. First operand 99 states and 156 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:31,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:17:31,413 INFO L93 Difference]: Finished difference Result 321 states and 507 transitions. [2024-12-02 14:17:31,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:17:31,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-12-02 14:17:31,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:17:31,417 INFO L225 Difference]: With dead ends: 321 [2024-12-02 14:17:31,417 INFO L226 Difference]: Without dead ends: 225 [2024-12-02 14:17:31,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:17:31,418 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 168 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:17:31,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 486 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:17:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-12-02 14:17:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 195. [2024-12-02 14:17:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 138 states have (on average 1.4565217391304348) internal successors, (201), 138 states have internal predecessors, (201), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 14:17:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 309 transitions. [2024-12-02 14:17:31,454 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 309 transitions. Word has length 179 [2024-12-02 14:17:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:17:31,455 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 309 transitions. [2024-12-02 14:17:31,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 309 transitions. [2024-12-02 14:17:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 14:17:31,458 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:31,458 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:31,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:17:31,458 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:31,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1320105348, now seen corresponding path program 1 times [2024-12-02 14:17:31,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:31,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398867370] [2024-12-02 14:17:31,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:31,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:17:31,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:17:31,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398867370] [2024-12-02 14:17:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398867370] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:17:31,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:17:31,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:17:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428054397] [2024-12-02 14:17:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:17:31,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:17:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:17:31,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:17:31,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:17:31,842 INFO L87 Difference]: Start difference. First operand 195 states and 309 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:17:32,289 INFO L93 Difference]: Finished difference Result 574 states and 910 transitions. [2024-12-02 14:17:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:17:32,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2024-12-02 14:17:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:17:32,295 INFO L225 Difference]: With dead ends: 574 [2024-12-02 14:17:32,295 INFO L226 Difference]: Without dead ends: 382 [2024-12-02 14:17:32,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:17:32,297 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 206 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:17:32,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 513 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:17:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-12-02 14:17:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 199. [2024-12-02 14:17:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 142 states have (on average 1.443661971830986) internal successors, (205), 142 states have internal predecessors, (205), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 14:17:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 313 transitions. [2024-12-02 14:17:32,339 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 313 transitions. Word has length 180 [2024-12-02 14:17:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:17:32,340 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 313 transitions. [2024-12-02 14:17:32,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 313 transitions. [2024-12-02 14:17:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 14:17:32,343 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:32,343 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:32,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:17:32,343 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:32,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 845962460, now seen corresponding path program 1 times [2024-12-02 14:17:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676960171] [2024-12-02 14:17:32,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:32,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:17:34,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:17:34,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676960171] [2024-12-02 14:17:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676960171] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:17:34,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:17:34,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:17:34,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588429346] [2024-12-02 14:17:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:17:34,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:17:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:17:34,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:17:34,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:17:34,909 INFO L87 Difference]: Start difference. First operand 199 states and 313 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:17:35,557 INFO L93 Difference]: Finished difference Result 588 states and 915 transitions. [2024-12-02 14:17:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:17:35,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-12-02 14:17:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:17:35,561 INFO L225 Difference]: With dead ends: 588 [2024-12-02 14:17:35,561 INFO L226 Difference]: Without dead ends: 392 [2024-12-02 14:17:35,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:17:35,563 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 218 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:17:35,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 452 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:17:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-12-02 14:17:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 278. [2024-12-02 14:17:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 193 states have (on average 1.4352331606217616) internal successors, (277), 193 states have internal predecessors, (277), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:17:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 439 transitions. [2024-12-02 14:17:35,625 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 439 transitions. Word has length 181 [2024-12-02 14:17:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:17:35,625 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 439 transitions. [2024-12-02 14:17:35,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 439 transitions. [2024-12-02 14:17:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 14:17:35,628 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:35,628 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:35,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:17:35,628 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:35,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2116095531, now seen corresponding path program 1 times [2024-12-02 14:17:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:35,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777717903] [2024-12-02 14:17:35,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:17:42,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:17:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777717903] [2024-12-02 14:17:42,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777717903] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:17:42,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:17:42,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:17:42,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298148987] [2024-12-02 14:17:42,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:17:42,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:17:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:17:42,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:17:42,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:17:42,654 INFO L87 Difference]: Start difference. First operand 278 states and 439 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:17:45,012 INFO L93 Difference]: Finished difference Result 718 states and 1092 transitions. [2024-12-02 14:17:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:17:45,012 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-12-02 14:17:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:17:45,015 INFO L225 Difference]: With dead ends: 718 [2024-12-02 14:17:45,015 INFO L226 Difference]: Without dead ends: 505 [2024-12-02 14:17:45,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:17:45,017 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 685 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:17:45,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 649 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:17:45,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2024-12-02 14:17:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 351. [2024-12-02 14:17:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 266 states have (on average 1.4360902255639099) internal successors, (382), 266 states have internal predecessors, (382), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:17:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 544 transitions. [2024-12-02 14:17:45,050 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 544 transitions. Word has length 181 [2024-12-02 14:17:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:17:45,051 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 544 transitions. [2024-12-02 14:17:45,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 544 transitions. [2024-12-02 14:17:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 14:17:45,052 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:45,052 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:45,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:17:45,053 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:45,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -403864403, now seen corresponding path program 1 times [2024-12-02 14:17:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:45,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877134198] [2024-12-02 14:17:45,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:45,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:17:47,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:17:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877134198] [2024-12-02 14:17:47,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877134198] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:17:47,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:17:47,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:17:47,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460663488] [2024-12-02 14:17:47,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:17:47,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:17:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:17:47,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:17:47,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:17:47,050 INFO L87 Difference]: Start difference. First operand 351 states and 544 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:48,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:17:48,223 INFO L93 Difference]: Finished difference Result 774 states and 1190 transitions. [2024-12-02 14:17:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:17:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-12-02 14:17:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:17:48,225 INFO L225 Difference]: With dead ends: 774 [2024-12-02 14:17:48,225 INFO L226 Difference]: Without dead ends: 562 [2024-12-02 14:17:48,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:17:48,227 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 375 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:17:48,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 539 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:17:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-12-02 14:17:48,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 396. [2024-12-02 14:17:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 311 states have (on average 1.4244372990353698) internal successors, (443), 311 states have internal predecessors, (443), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:17:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 605 transitions. [2024-12-02 14:17:48,265 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 605 transitions. Word has length 181 [2024-12-02 14:17:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:17:48,265 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 605 transitions. [2024-12-02 14:17:48,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:48,266 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 605 transitions. [2024-12-02 14:17:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 14:17:48,267 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:48,267 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:48,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:17:48,268 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:48,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1498813395, now seen corresponding path program 1 times [2024-12-02 14:17:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:48,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12645953] [2024-12-02 14:17:48,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:48,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:17:50,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:17:50,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12645953] [2024-12-02 14:17:50,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12645953] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:17:50,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:17:50,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:17:50,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503743681] [2024-12-02 14:17:50,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:17:50,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:17:50,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:17:50,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:17:50,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:17:50,608 INFO L87 Difference]: Start difference. First operand 396 states and 605 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:17:51,960 INFO L93 Difference]: Finished difference Result 746 states and 1132 transitions. [2024-12-02 14:17:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:17:51,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-12-02 14:17:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:17:51,964 INFO L225 Difference]: With dead ends: 746 [2024-12-02 14:17:51,964 INFO L226 Difference]: Without dead ends: 532 [2024-12-02 14:17:51,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:17:51,965 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 297 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:17:51,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 607 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 14:17:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-12-02 14:17:52,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 416. [2024-12-02 14:17:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 331 states have (on average 1.4350453172205437) internal successors, (475), 331 states have internal predecessors, (475), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:17:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 637 transitions. [2024-12-02 14:17:52,014 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 637 transitions. Word has length 181 [2024-12-02 14:17:52,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:17:52,015 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 637 transitions. [2024-12-02 14:17:52,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 637 transitions. [2024-12-02 14:17:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 14:17:52,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:52,017 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:52,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:17:52,018 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:52,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:52,018 INFO L85 PathProgramCache]: Analyzing trace with hash -165154790, now seen corresponding path program 1 times [2024-12-02 14:17:52,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:52,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255430308] [2024-12-02 14:17:52,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:52,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:17:52,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:17:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255430308] [2024-12-02 14:17:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255430308] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:17:52,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:17:52,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:17:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493999854] [2024-12-02 14:17:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:17:52,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:17:52,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:17:52,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:17:52,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:17:52,396 INFO L87 Difference]: Start difference. First operand 416 states and 637 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:17:52,670 INFO L93 Difference]: Finished difference Result 672 states and 1032 transitions. [2024-12-02 14:17:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:17:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-12-02 14:17:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:17:52,674 INFO L225 Difference]: With dead ends: 672 [2024-12-02 14:17:52,674 INFO L226 Difference]: Without dead ends: 416 [2024-12-02 14:17:52,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:17:52,675 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 120 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:17:52,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 377 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:17:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-12-02 14:17:52,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 388. [2024-12-02 14:17:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 303 states have (on average 1.4026402640264026) internal successors, (425), 303 states have internal predecessors, (425), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:17:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 587 transitions. [2024-12-02 14:17:52,728 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 587 transitions. Word has length 181 [2024-12-02 14:17:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:17:52,728 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 587 transitions. [2024-12-02 14:17:52,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 587 transitions. [2024-12-02 14:17:52,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 14:17:52,730 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:52,730 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:52,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:17:52,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:52,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 443906289, now seen corresponding path program 1 times [2024-12-02 14:17:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:52,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232650401] [2024-12-02 14:17:52,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:52,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:17:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:17:55,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:17:55,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232650401] [2024-12-02 14:17:55,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232650401] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:17:55,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:17:55,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:17:55,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941269863] [2024-12-02 14:17:55,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:17:55,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:17:55,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:17:55,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:17:55,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:17:55,502 INFO L87 Difference]: Start difference. First operand 388 states and 587 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:17:56,732 INFO L93 Difference]: Finished difference Result 769 states and 1149 transitions. [2024-12-02 14:17:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:17:56,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-12-02 14:17:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:17:56,735 INFO L225 Difference]: With dead ends: 769 [2024-12-02 14:17:56,736 INFO L226 Difference]: Without dead ends: 573 [2024-12-02 14:17:56,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:17:56,737 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 352 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:17:56,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 688 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:17:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-12-02 14:17:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 416. [2024-12-02 14:17:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 329 states have (on average 1.3829787234042554) internal successors, (455), 329 states have internal predecessors, (455), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:17:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 617 transitions. [2024-12-02 14:17:56,772 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 617 transitions. Word has length 182 [2024-12-02 14:17:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:17:56,772 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 617 transitions. [2024-12-02 14:17:56,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:17:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 617 transitions. [2024-12-02 14:17:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 14:17:56,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:17:56,774 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:17:56,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:17:56,774 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:17:56,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:17:56,775 INFO L85 PathProgramCache]: Analyzing trace with hash 176093985, now seen corresponding path program 1 times [2024-12-02 14:17:56,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:17:56,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980835604] [2024-12-02 14:17:56,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:17:56,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:17:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:18:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:18:00,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:18:00,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980835604] [2024-12-02 14:18:00,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980835604] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:18:00,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:18:00,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:18:00,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166062059] [2024-12-02 14:18:00,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:18:00,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:18:00,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:18:00,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:18:00,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:18:00,124 INFO L87 Difference]: Start difference. First operand 416 states and 617 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:18:03,355 INFO L93 Difference]: Finished difference Result 1137 states and 1688 transitions. [2024-12-02 14:18:03,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 14:18:03,356 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-12-02 14:18:03,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:18:03,358 INFO L225 Difference]: With dead ends: 1137 [2024-12-02 14:18:03,358 INFO L226 Difference]: Without dead ends: 875 [2024-12-02 14:18:03,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:18:03,359 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 577 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:18:03,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 693 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 14:18:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-12-02 14:18:03,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 711. [2024-12-02 14:18:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 566 states have (on average 1.3939929328621907) internal successors, (789), 566 states have internal predecessors, (789), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:18:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1059 transitions. [2024-12-02 14:18:03,427 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1059 transitions. Word has length 182 [2024-12-02 14:18:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:18:03,428 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1059 transitions. [2024-12-02 14:18:03,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1059 transitions. [2024-12-02 14:18:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 14:18:03,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:18:03,430 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:18:03,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:18:03,430 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:18:03,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:18:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash 856152355, now seen corresponding path program 1 times [2024-12-02 14:18:03,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:18:03,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879367458] [2024-12-02 14:18:03,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:18:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:18:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:18:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:18:08,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:18:08,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879367458] [2024-12-02 14:18:08,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879367458] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:18:08,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:18:08,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:18:08,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977176256] [2024-12-02 14:18:08,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:18:08,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:18:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:18:08,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:18:08,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:18:08,596 INFO L87 Difference]: Start difference. First operand 711 states and 1059 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:18:10,511 INFO L93 Difference]: Finished difference Result 1338 states and 1973 transitions. [2024-12-02 14:18:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:18:10,512 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-12-02 14:18:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:18:10,516 INFO L225 Difference]: With dead ends: 1338 [2024-12-02 14:18:10,516 INFO L226 Difference]: Without dead ends: 811 [2024-12-02 14:18:10,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:18:10,518 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 255 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:18:10,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 898 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:18:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2024-12-02 14:18:10,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 711. [2024-12-02 14:18:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 566 states have (on average 1.392226148409894) internal successors, (788), 566 states have internal predecessors, (788), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:18:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1058 transitions. [2024-12-02 14:18:10,596 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1058 transitions. Word has length 182 [2024-12-02 14:18:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:18:10,597 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1058 transitions. [2024-12-02 14:18:10,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1058 transitions. [2024-12-02 14:18:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 14:18:10,598 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:18:10,598 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:18:10,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:18:10,599 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:18:10,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:18:10,599 INFO L85 PathProgramCache]: Analyzing trace with hash 965881430, now seen corresponding path program 1 times [2024-12-02 14:18:10,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:18:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404329850] [2024-12-02 14:18:10,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:18:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:18:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:18:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:18:19,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:18:19,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404329850] [2024-12-02 14:18:19,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404329850] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:18:19,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:18:19,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 14:18:19,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533008651] [2024-12-02 14:18:19,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:18:19,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 14:18:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:18:19,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 14:18:19,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:18:19,353 INFO L87 Difference]: Start difference. First operand 711 states and 1058 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:18:22,754 INFO L93 Difference]: Finished difference Result 1067 states and 1558 transitions. [2024-12-02 14:18:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 14:18:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-12-02 14:18:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:18:22,757 INFO L225 Difference]: With dead ends: 1067 [2024-12-02 14:18:22,757 INFO L226 Difference]: Without dead ends: 855 [2024-12-02 14:18:22,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:18:22,758 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 361 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:18:22,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 803 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 14:18:22,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-12-02 14:18:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 703. [2024-12-02 14:18:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 558 states have (on average 1.3942652329749103) internal successors, (778), 558 states have internal predecessors, (778), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:18:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1048 transitions. [2024-12-02 14:18:22,804 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1048 transitions. Word has length 183 [2024-12-02 14:18:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:18:22,804 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1048 transitions. [2024-12-02 14:18:22,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1048 transitions. [2024-12-02 14:18:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 14:18:22,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:18:22,806 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:18:22,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:18:22,806 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:18:22,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:18:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1060884472, now seen corresponding path program 1 times [2024-12-02 14:18:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:18:22,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545988677] [2024-12-02 14:18:22,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:18:22,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:18:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:18:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:18:26,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:18:26,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545988677] [2024-12-02 14:18:26,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545988677] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:18:26,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:18:26,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:18:26,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876132694] [2024-12-02 14:18:26,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:18:26,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:18:26,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:18:26,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:18:26,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:18:26,198 INFO L87 Difference]: Start difference. First operand 703 states and 1048 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:30,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:18:30,775 INFO L93 Difference]: Finished difference Result 1581 states and 2347 transitions. [2024-12-02 14:18:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 14:18:30,776 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-12-02 14:18:30,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:18:30,779 INFO L225 Difference]: With dead ends: 1581 [2024-12-02 14:18:30,779 INFO L226 Difference]: Without dead ends: 1119 [2024-12-02 14:18:30,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:18:30,781 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 671 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:18:30,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 535 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 14:18:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2024-12-02 14:18:30,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 721. [2024-12-02 14:18:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 576 states have (on average 1.3923611111111112) internal successors, (802), 576 states have internal predecessors, (802), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:18:30,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1072 transitions. [2024-12-02 14:18:30,825 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1072 transitions. Word has length 183 [2024-12-02 14:18:30,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:18:30,825 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1072 transitions. [2024-12-02 14:18:30,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:30,825 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1072 transitions. [2024-12-02 14:18:30,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 14:18:30,826 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:18:30,826 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:18:30,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:18:30,826 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:18:30,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:18:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash 714122890, now seen corresponding path program 1 times [2024-12-02 14:18:30,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:18:30,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413434818] [2024-12-02 14:18:30,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:18:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:18:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:18:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:18:41,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:18:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413434818] [2024-12-02 14:18:41,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413434818] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:18:41,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:18:41,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:18:41,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259384012] [2024-12-02 14:18:41,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:18:41,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:18:41,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:18:41,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:18:41,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:18:41,788 INFO L87 Difference]: Start difference. First operand 721 states and 1072 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:18:46,138 INFO L93 Difference]: Finished difference Result 1267 states and 1892 transitions. [2024-12-02 14:18:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:18:46,139 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-12-02 14:18:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:18:46,143 INFO L225 Difference]: With dead ends: 1267 [2024-12-02 14:18:46,143 INFO L226 Difference]: Without dead ends: 787 [2024-12-02 14:18:46,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:18:46,145 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 273 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:18:46,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 766 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 14:18:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-12-02 14:18:46,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 737. [2024-12-02 14:18:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 592 states have (on average 1.385135135135135) internal successors, (820), 592 states have internal predecessors, (820), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:18:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1090 transitions. [2024-12-02 14:18:46,225 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1090 transitions. Word has length 183 [2024-12-02 14:18:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:18:46,226 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 1090 transitions. [2024-12-02 14:18:46,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1090 transitions. [2024-12-02 14:18:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 14:18:46,227 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:18:46,227 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:18:46,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:18:46,228 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:18:46,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:18:46,228 INFO L85 PathProgramCache]: Analyzing trace with hash -380826102, now seen corresponding path program 1 times [2024-12-02 14:18:46,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:18:46,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919373503] [2024-12-02 14:18:46,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:18:46,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:18:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:18:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:18:50,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:18:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919373503] [2024-12-02 14:18:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919373503] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:18:50,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:18:50,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:18:50,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360098211] [2024-12-02 14:18:50,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:18:50,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:18:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:18:50,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:18:50,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:18:50,029 INFO L87 Difference]: Start difference. First operand 737 states and 1090 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:18:53,854 INFO L93 Difference]: Finished difference Result 1800 states and 2609 transitions. [2024-12-02 14:18:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:18:53,855 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-12-02 14:18:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:18:53,859 INFO L225 Difference]: With dead ends: 1800 [2024-12-02 14:18:53,859 INFO L226 Difference]: Without dead ends: 1114 [2024-12-02 14:18:53,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:18:53,861 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 379 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:18:53,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 874 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 14:18:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-12-02 14:18:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 801. [2024-12-02 14:18:53,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 656 states have (on average 1.3826219512195121) internal successors, (907), 656 states have internal predecessors, (907), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:18:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1177 transitions. [2024-12-02 14:18:53,962 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1177 transitions. Word has length 183 [2024-12-02 14:18:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:18:53,962 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1177 transitions. [2024-12-02 14:18:53,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:18:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1177 transitions. [2024-12-02 14:18:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 14:18:53,964 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:18:53,964 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:18:53,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:18:53,964 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:18:53,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:18:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1394181260, now seen corresponding path program 1 times [2024-12-02 14:18:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:18:53,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973784788] [2024-12-02 14:18:53,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:18:53,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:18:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:19:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:19:05,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:19:05,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973784788] [2024-12-02 14:19:05,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973784788] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:19:05,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:19:05,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 14:19:05,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545422024] [2024-12-02 14:19:05,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:19:05,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 14:19:05,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:19:05,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 14:19:05,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:19:05,018 INFO L87 Difference]: Start difference. First operand 801 states and 1177 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:19:45,358 WARN L286 SmtUtils]: Spent 35.31s on a formula simplification. DAG size of input: 227 DAG size of output: 133 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:19:56,750 WARN L286 SmtUtils]: Spent 10.87s on a formula simplification. DAG size of input: 252 DAG size of output: 142 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:20:05,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:05,113 INFO L93 Difference]: Finished difference Result 1457 states and 2117 transitions. [2024-12-02 14:20:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 14:20:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-12-02 14:20:05,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:05,116 INFO L225 Difference]: With dead ends: 1457 [2024-12-02 14:20:05,116 INFO L226 Difference]: Without dead ends: 985 [2024-12-02 14:20:05,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 56.3s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:20:05,117 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 426 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:05,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 961 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-12-02 14:20:05,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2024-12-02 14:20:05,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 801. [2024-12-02 14:20:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 656 states have (on average 1.3826219512195121) internal successors, (907), 656 states have internal predecessors, (907), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:20:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1177 transitions. [2024-12-02 14:20:05,195 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1177 transitions. Word has length 183 [2024-12-02 14:20:05,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:05,196 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1177 transitions. [2024-12-02 14:20:05,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:20:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1177 transitions. [2024-12-02 14:20:05,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 14:20:05,197 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:05,197 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:05,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:20:05,197 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:05,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash 56395307, now seen corresponding path program 1 times [2024-12-02 14:20:05,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:05,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407551593] [2024-12-02 14:20:05,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:20:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:20:47,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:20:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407551593] [2024-12-02 14:20:47,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407551593] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:20:47,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:20:47,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:20:47,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864058651] [2024-12-02 14:20:47,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:20:47,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:20:47,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:20:47,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:20:47,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:20:47,328 INFO L87 Difference]: Start difference. First operand 801 states and 1177 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:20:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:49,208 INFO L93 Difference]: Finished difference Result 1145 states and 1619 transitions. [2024-12-02 14:20:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:20:49,209 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 184 [2024-12-02 14:20:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:49,212 INFO L225 Difference]: With dead ends: 1145 [2024-12-02 14:20:49,212 INFO L226 Difference]: Without dead ends: 1143 [2024-12-02 14:20:49,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:20:49,213 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 431 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:49,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1093 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:20:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2024-12-02 14:20:49,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 874. [2024-12-02 14:20:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 729 states have (on average 1.3758573388203017) internal successors, (1003), 729 states have internal predecessors, (1003), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:20:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1273 transitions. [2024-12-02 14:20:49,279 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1273 transitions. Word has length 184 [2024-12-02 14:20:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:49,280 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1273 transitions. [2024-12-02 14:20:49,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:20:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1273 transitions. [2024-12-02 14:20:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 14:20:49,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:49,281 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:49,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:20:49,282 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:49,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash 927690599, now seen corresponding path program 1 times [2024-12-02 14:20:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90859245] [2024-12-02 14:20:49,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:49,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:21:30,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:30,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90859245] [2024-12-02 14:21:30,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90859245] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:30,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:30,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:21:30,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406678787] [2024-12-02 14:21:30,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:30,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:21:30,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:30,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:21:30,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:21:30,596 INFO L87 Difference]: Start difference. First operand 874 states and 1273 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:21:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:32,768 INFO L93 Difference]: Finished difference Result 1147 states and 1622 transitions. [2024-12-02 14:21:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 14:21:32,769 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 184 [2024-12-02 14:21:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:32,772 INFO L225 Difference]: With dead ends: 1147 [2024-12-02 14:21:32,772 INFO L226 Difference]: Without dead ends: 1145 [2024-12-02 14:21:32,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:21:32,773 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 361 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:32,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1096 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:21:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2024-12-02 14:21:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 943. [2024-12-02 14:21:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 798 states have (on average 1.362155388471178) internal successors, (1087), 798 states have internal predecessors, (1087), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:21:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1357 transitions. [2024-12-02 14:21:32,833 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1357 transitions. Word has length 184 [2024-12-02 14:21:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:32,833 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1357 transitions. [2024-12-02 14:21:32,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:21:32,834 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1357 transitions. [2024-12-02 14:21:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 14:21:32,834 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:32,835 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:21:32,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:21:32,835 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:32,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:32,835 INFO L85 PathProgramCache]: Analyzing trace with hash 479097133, now seen corresponding path program 1 times [2024-12-02 14:21:32,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:32,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616073407] [2024-12-02 14:21:32,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:32,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:21:32,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:32,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616073407] [2024-12-02 14:21:32,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616073407] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:32,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:32,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:21:32,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907419165] [2024-12-02 14:21:32,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:32,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:21:32,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:32,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:21:32,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:21:32,979 INFO L87 Difference]: Start difference. First operand 943 states and 1357 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:21:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:33,168 INFO L93 Difference]: Finished difference Result 1653 states and 2388 transitions. [2024-12-02 14:21:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:21:33,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 184 [2024-12-02 14:21:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:33,172 INFO L225 Difference]: With dead ends: 1653 [2024-12-02 14:21:33,172 INFO L226 Difference]: Without dead ends: 966 [2024-12-02 14:21:33,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:21:33,173 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 129 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:33,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 581 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:21:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2024-12-02 14:21:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 924. [2024-12-02 14:21:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 779 states have (on average 1.362002567394095) internal successors, (1061), 779 states have internal predecessors, (1061), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 14:21:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1331 transitions. [2024-12-02 14:21:33,241 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1331 transitions. Word has length 184 [2024-12-02 14:21:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:33,241 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1331 transitions. [2024-12-02 14:21:33,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:21:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1331 transitions. [2024-12-02 14:21:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 14:21:33,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:33,243 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:21:33,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:21:33,243 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:33,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:33,244 INFO L85 PathProgramCache]: Analyzing trace with hash 640202188, now seen corresponding path program 1 times [2024-12-02 14:21:33,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:33,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480688259] [2024-12-02 14:21:33,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:21:36,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:36,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480688259] [2024-12-02 14:21:36,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480688259] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:36,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:36,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 14:21:36,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572283805] [2024-12-02 14:21:36,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:36,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:21:36,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:36,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:21:36,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:21:36,790 INFO L87 Difference]: Start difference. First operand 924 states and 1331 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:21:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:38,715 INFO L93 Difference]: Finished difference Result 1515 states and 2173 transitions. [2024-12-02 14:21:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:21:38,715 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 184 [2024-12-02 14:21:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:38,718 INFO L225 Difference]: With dead ends: 1515 [2024-12-02 14:21:38,718 INFO L226 Difference]: Without dead ends: 1293 [2024-12-02 14:21:38,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:21:38,719 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 194 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:38,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 770 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 14:21:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2024-12-02 14:21:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 688. [2024-12-02 14:21:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 601 states have (on average 1.357737104825291) internal successors, (816), 601 states have internal predecessors, (816), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:21:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 978 transitions. [2024-12-02 14:21:38,770 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 978 transitions. Word has length 184 [2024-12-02 14:21:38,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:38,770 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 978 transitions. [2024-12-02 14:21:38,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:21:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 978 transitions. [2024-12-02 14:21:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 14:21:38,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:38,771 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:21:38,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:21:38,771 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:38,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1320260558, now seen corresponding path program 1 times [2024-12-02 14:21:38,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:38,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892356728] [2024-12-02 14:21:38,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:38,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:21:47,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:47,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892356728] [2024-12-02 14:21:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892356728] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:47,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:47,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 14:21:47,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993398125] [2024-12-02 14:21:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:47,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 14:21:47,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:47,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 14:21:47,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:21:47,551 INFO L87 Difference]: Start difference. First operand 688 states and 978 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:21:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:50,801 INFO L93 Difference]: Finished difference Result 1084 states and 1540 transitions. [2024-12-02 14:21:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 14:21:50,801 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 184 [2024-12-02 14:21:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:50,803 INFO L225 Difference]: With dead ends: 1084 [2024-12-02 14:21:50,803 INFO L226 Difference]: Without dead ends: 802 [2024-12-02 14:21:50,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2024-12-02 14:21:50,805 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 283 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:50,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 984 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 14:21:50,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2024-12-02 14:21:50,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 668. [2024-12-02 14:21:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 581 states have (on average 1.359724612736661) internal successors, (790), 581 states have internal predecessors, (790), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:21:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 952 transitions. [2024-12-02 14:21:50,851 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 952 transitions. Word has length 184 [2024-12-02 14:21:50,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:50,851 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 952 transitions. [2024-12-02 14:21:50,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:21:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 952 transitions. [2024-12-02 14:21:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 14:21:50,852 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:50,852 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:21:50,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:21:50,852 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:50,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:50,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1778185930, now seen corresponding path program 1 times [2024-12-02 14:21:50,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:50,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771759751] [2024-12-02 14:21:50,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:21:50,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:21:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:21:55,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:55,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771759751] [2024-12-02 14:21:55,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771759751] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:21:55,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:21:55,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 14:21:55,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051136666] [2024-12-02 14:21:55,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:21:55,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:21:55,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:55,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:21:55,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:21:55,349 INFO L87 Difference]: Start difference. First operand 668 states and 952 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:22:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:00,461 INFO L93 Difference]: Finished difference Result 1094 states and 1580 transitions. [2024-12-02 14:22:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:22:00,462 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 184 [2024-12-02 14:22:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:00,465 INFO L225 Difference]: With dead ends: 1094 [2024-12-02 14:22:00,465 INFO L226 Difference]: Without dead ends: 816 [2024-12-02 14:22:00,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:22:00,467 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 216 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:00,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 819 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 14:22:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-12-02 14:22:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 678. [2024-12-02 14:22:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 591 states have (on average 1.3604060913705585) internal successors, (804), 591 states have internal predecessors, (804), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:22:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 966 transitions. [2024-12-02 14:22:00,514 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 966 transitions. Word has length 184 [2024-12-02 14:22:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:00,514 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 966 transitions. [2024-12-02 14:22:00,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:22:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 966 transitions. [2024-12-02 14:22:00,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:22:00,515 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:00,515 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:00,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 14:22:00,515 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:00,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:00,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1192353189, now seen corresponding path program 1 times [2024-12-02 14:22:00,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:00,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690510298] [2024-12-02 14:22:00,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:22:47,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:47,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690510298] [2024-12-02 14:22:47,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690510298] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:47,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:22:47,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 14:22:47,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680903412] [2024-12-02 14:22:47,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:47,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 14:22:47,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:47,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 14:22:47,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:22:47,860 INFO L87 Difference]: Start difference. First operand 678 states and 966 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:22:50,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:50,686 INFO L93 Difference]: Finished difference Result 880 states and 1220 transitions. [2024-12-02 14:22:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:22:50,686 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 185 [2024-12-02 14:22:50,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:50,688 INFO L225 Difference]: With dead ends: 880 [2024-12-02 14:22:50,688 INFO L226 Difference]: Without dead ends: 878 [2024-12-02 14:22:50,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:22:50,689 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 671 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:50,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 813 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 14:22:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2024-12-02 14:22:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 698. [2024-12-02 14:22:50,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 611 states have (on average 1.364975450081833) internal successors, (834), 611 states have internal predecessors, (834), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:22:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 996 transitions. [2024-12-02 14:22:50,761 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 996 transitions. Word has length 185 [2024-12-02 14:22:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:50,762 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 996 transitions. [2024-12-02 14:22:50,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:22:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 996 transitions. [2024-12-02 14:22:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:22:50,763 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:50,763 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:50,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:22:50,763 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:50,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash 181235939, now seen corresponding path program 1 times [2024-12-02 14:22:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:50,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957491765] [2024-12-02 14:22:50,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:22:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:22:50,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:22:50,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957491765] [2024-12-02 14:22:50,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957491765] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:22:50,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:22:50,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:22:50,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663295879] [2024-12-02 14:22:50,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:22:50,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:22:50,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:22:50,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:22:50,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:22:50,839 INFO L87 Difference]: Start difference. First operand 698 states and 996 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:22:50,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:22:50,913 INFO L93 Difference]: Finished difference Result 1141 states and 1636 transitions. [2024-12-02 14:22:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:22:50,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 185 [2024-12-02 14:22:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:22:50,916 INFO L225 Difference]: With dead ends: 1141 [2024-12-02 14:22:50,916 INFO L226 Difference]: Without dead ends: 767 [2024-12-02 14:22:50,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:22:50,918 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 10 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:22:50,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 279 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:22:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-12-02 14:22:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 693. [2024-12-02 14:22:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 606 states have (on average 1.33993399339934) internal successors, (812), 606 states have internal predecessors, (812), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:22:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 974 transitions. [2024-12-02 14:22:50,969 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 974 transitions. Word has length 185 [2024-12-02 14:22:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:22:50,969 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 974 transitions. [2024-12-02 14:22:50,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:22:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 974 transitions. [2024-12-02 14:22:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:22:50,970 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:22:50,970 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:22:50,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 14:22:50,970 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:22:50,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:22:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1862263831, now seen corresponding path program 1 times [2024-12-02 14:22:50,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:22:50,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443598685] [2024-12-02 14:22:50,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:22:50,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:22:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:23:34,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:34,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443598685] [2024-12-02 14:23:34,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443598685] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:34,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:34,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 14:23:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998115222] [2024-12-02 14:23:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:34,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 14:23:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:34,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 14:23:34,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:23:34,276 INFO L87 Difference]: Start difference. First operand 693 states and 974 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:23:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:39,012 INFO L93 Difference]: Finished difference Result 856 states and 1167 transitions. [2024-12-02 14:23:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:23:39,013 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 185 [2024-12-02 14:23:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:39,015 INFO L225 Difference]: With dead ends: 856 [2024-12-02 14:23:39,015 INFO L226 Difference]: Without dead ends: 854 [2024-12-02 14:23:39,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2024-12-02 14:23:39,016 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 293 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:39,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1030 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 14:23:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2024-12-02 14:23:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 708. [2024-12-02 14:23:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 621 states have (on average 1.3397745571658615) internal successors, (832), 621 states have internal predecessors, (832), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:23:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 994 transitions. [2024-12-02 14:23:39,064 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 994 transitions. Word has length 185 [2024-12-02 14:23:39,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:39,064 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 994 transitions. [2024-12-02 14:23:39,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:23:39,064 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 994 transitions. [2024-12-02 14:23:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:23:39,065 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:39,065 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:39,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 14:23:39,066 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:39,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1609846003, now seen corresponding path program 1 times [2024-12-02 14:23:39,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:39,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531756362] [2024-12-02 14:23:39,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:39,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:23:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531756362] [2024-12-02 14:23:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531756362] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:52,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:52,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 14:23:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559531225] [2024-12-02 14:23:52,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:52,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 14:23:52,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:52,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 14:23:52,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:23:52,813 INFO L87 Difference]: Start difference. First operand 708 states and 994 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:23:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:55,911 INFO L93 Difference]: Finished difference Result 1216 states and 1701 transitions. [2024-12-02 14:23:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:23:55,912 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 185 [2024-12-02 14:23:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:55,915 INFO L225 Difference]: With dead ends: 1216 [2024-12-02 14:23:55,915 INFO L226 Difference]: Without dead ends: 918 [2024-12-02 14:23:55,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:23:55,916 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 435 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:55,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 730 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 14:23:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-12-02 14:23:55,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 716. [2024-12-02 14:23:55,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 629 states have (on average 1.34181240063593) internal successors, (844), 629 states have internal predecessors, (844), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:23:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1006 transitions. [2024-12-02 14:23:55,964 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1006 transitions. Word has length 185 [2024-12-02 14:23:55,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:55,964 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 1006 transitions. [2024-12-02 14:23:55,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:23:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1006 transitions. [2024-12-02 14:23:55,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:23:55,966 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:55,966 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:23:55,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 14:23:55,966 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:55,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash -910113931, now seen corresponding path program 1 times [2024-12-02 14:23:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:55,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645465120] [2024-12-02 14:23:55,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:55,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645465120] [2024-12-02 14:24:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645465120] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:00,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:00,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 14:24:00,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684306687] [2024-12-02 14:24:00,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:00,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:24:00,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:00,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:24:00,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:24:00,091 INFO L87 Difference]: Start difference. First operand 716 states and 1006 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:02,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:02,655 INFO L93 Difference]: Finished difference Result 1271 states and 1790 transitions. [2024-12-02 14:24:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 14:24:02,656 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 185 [2024-12-02 14:24:02,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:02,658 INFO L225 Difference]: With dead ends: 1271 [2024-12-02 14:24:02,658 INFO L226 Difference]: Without dead ends: 973 [2024-12-02 14:24:02,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:24:02,659 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 309 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:02,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 473 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:24:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-12-02 14:24:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 706. [2024-12-02 14:24:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 619 states have (on average 1.3376413570274637) internal successors, (828), 619 states have internal predecessors, (828), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 990 transitions. [2024-12-02 14:24:02,708 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 990 transitions. Word has length 185 [2024-12-02 14:24:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:02,708 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 990 transitions. [2024-12-02 14:24:02,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 990 transitions. [2024-12-02 14:24:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:24:02,709 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:02,709 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:02,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 14:24:02,709 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:02,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:02,709 INFO L85 PathProgramCache]: Analyzing trace with hash -230055561, now seen corresponding path program 1 times [2024-12-02 14:24:02,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:02,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25526175] [2024-12-02 14:24:02,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:02,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:15,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:15,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25526175] [2024-12-02 14:24:15,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25526175] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:15,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:15,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 14:24:15,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542630563] [2024-12-02 14:24:15,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:15,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 14:24:15,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:15,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 14:24:15,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:24:15,222 INFO L87 Difference]: Start difference. First operand 706 states and 990 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:21,603 INFO L93 Difference]: Finished difference Result 1209 states and 1680 transitions. [2024-12-02 14:24:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 14:24:21,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 185 [2024-12-02 14:24:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:21,606 INFO L225 Difference]: With dead ends: 1209 [2024-12-02 14:24:21,606 INFO L226 Difference]: Without dead ends: 913 [2024-12-02 14:24:21,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2024-12-02 14:24:21,607 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 402 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:21,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 715 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 14:24:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2024-12-02 14:24:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 702. [2024-12-02 14:24:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 615 states have (on average 1.3398373983739837) internal successors, (824), 615 states have internal predecessors, (824), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 986 transitions. [2024-12-02 14:24:21,656 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 986 transitions. Word has length 185 [2024-12-02 14:24:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:21,656 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 986 transitions. [2024-12-02 14:24:21,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 986 transitions. [2024-12-02 14:24:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 14:24:21,657 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:21,657 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:21,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 14:24:21,657 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:21,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:21,657 INFO L85 PathProgramCache]: Analyzing trace with hash 464439009, now seen corresponding path program 1 times [2024-12-02 14:24:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:21,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094634455] [2024-12-02 14:24:21,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:21,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:21,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094634455] [2024-12-02 14:24:21,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094634455] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:21,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:21,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:24:21,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993916035] [2024-12-02 14:24:21,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:21,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:24:21,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:21,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:24:21,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:24:21,915 INFO L87 Difference]: Start difference. First operand 702 states and 986 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:22,371 INFO L93 Difference]: Finished difference Result 1114 states and 1569 transitions. [2024-12-02 14:24:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:24:22,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 186 [2024-12-02 14:24:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:22,374 INFO L225 Difference]: With dead ends: 1114 [2024-12-02 14:24:22,374 INFO L226 Difference]: Without dead ends: 731 [2024-12-02 14:24:22,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:24:22,375 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 129 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:22,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 420 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:24:22,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-12-02 14:24:22,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 701. [2024-12-02 14:24:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 614 states have (on average 1.3387622149837133) internal successors, (822), 614 states have internal predecessors, (822), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 984 transitions. [2024-12-02 14:24:22,427 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 984 transitions. Word has length 186 [2024-12-02 14:24:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:22,428 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 984 transitions. [2024-12-02 14:24:22,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 984 transitions. [2024-12-02 14:24:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 14:24:22,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:22,428 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:22,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 14:24:22,429 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:22,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash -390635297, now seen corresponding path program 1 times [2024-12-02 14:24:22,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:22,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716853932] [2024-12-02 14:24:22,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:22,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:22,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:22,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716853932] [2024-12-02 14:24:22,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716853932] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:22,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:22,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:24:22,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045944708] [2024-12-02 14:24:22,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:22,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:24:22,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:22,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:24:22,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:24:22,779 INFO L87 Difference]: Start difference. First operand 701 states and 984 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:23,511 INFO L93 Difference]: Finished difference Result 1051 states and 1489 transitions. [2024-12-02 14:24:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:24:23,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 186 [2024-12-02 14:24:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:23,513 INFO L225 Difference]: With dead ends: 1051 [2024-12-02 14:24:23,513 INFO L226 Difference]: Without dead ends: 753 [2024-12-02 14:24:23,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:24:23,514 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 177 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:23,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 543 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:24:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-12-02 14:24:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 699. [2024-12-02 14:24:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 612 states have (on average 1.3333333333333333) internal successors, (816), 612 states have internal predecessors, (816), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 978 transitions. [2024-12-02 14:24:23,564 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 978 transitions. Word has length 186 [2024-12-02 14:24:23,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:23,565 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 978 transitions. [2024-12-02 14:24:23,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 978 transitions. [2024-12-02 14:24:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 14:24:23,566 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:23,566 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:23,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 14:24:23,566 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:23,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 888340179, now seen corresponding path program 1 times [2024-12-02 14:24:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:23,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034309783] [2024-12-02 14:24:23,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:25,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034309783] [2024-12-02 14:24:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034309783] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:25,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:25,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:24:25,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494628221] [2024-12-02 14:24:25,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:25,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:24:25,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:25,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:24:25,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:24:25,438 INFO L87 Difference]: Start difference. First operand 699 states and 978 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:27,215 INFO L93 Difference]: Finished difference Result 1205 states and 1677 transitions. [2024-12-02 14:24:27,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:24:27,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 187 [2024-12-02 14:24:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:27,217 INFO L225 Difference]: With dead ends: 1205 [2024-12-02 14:24:27,217 INFO L226 Difference]: Without dead ends: 715 [2024-12-02 14:24:27,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:24:27,218 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 219 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:27,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 628 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:24:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-12-02 14:24:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 623. [2024-12-02 14:24:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 536 states have (on average 1.328358208955224) internal successors, (712), 536 states have internal predecessors, (712), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 874 transitions. [2024-12-02 14:24:27,268 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 874 transitions. Word has length 187 [2024-12-02 14:24:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:27,268 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 874 transitions. [2024-12-02 14:24:27,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 874 transitions. [2024-12-02 14:24:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 14:24:27,269 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:27,269 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:27,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 14:24:27,269 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:27,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1631619755, now seen corresponding path program 1 times [2024-12-02 14:24:27,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:27,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023803521] [2024-12-02 14:24:27,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:27,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:32,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:32,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023803521] [2024-12-02 14:24:32,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023803521] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:32,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:32,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:24:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107759331] [2024-12-02 14:24:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:32,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:24:32,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:32,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:24:32,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:24:32,346 INFO L87 Difference]: Start difference. First operand 623 states and 874 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:37,126 INFO L93 Difference]: Finished difference Result 1109 states and 1538 transitions. [2024-12-02 14:24:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:24:37,126 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 187 [2024-12-02 14:24:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:37,129 INFO L225 Difference]: With dead ends: 1109 [2024-12-02 14:24:37,129 INFO L226 Difference]: Without dead ends: 813 [2024-12-02 14:24:37,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:24:37,130 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 254 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:37,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 696 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 14:24:37,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-12-02 14:24:37,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 623. [2024-12-02 14:24:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 536 states have (on average 1.328358208955224) internal successors, (712), 536 states have internal predecessors, (712), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 874 transitions. [2024-12-02 14:24:37,182 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 874 transitions. Word has length 187 [2024-12-02 14:24:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:37,182 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 874 transitions. [2024-12-02 14:24:37,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 874 transitions. [2024-12-02 14:24:37,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 14:24:37,183 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:37,183 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:37,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 14:24:37,183 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:37,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1537382100, now seen corresponding path program 1 times [2024-12-02 14:24:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:37,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271456312] [2024-12-02 14:24:37,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:37,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:37,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:37,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271456312] [2024-12-02 14:24:37,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271456312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:37,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:37,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:24:37,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708206957] [2024-12-02 14:24:37,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:37,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:24:37,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:37,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:24:37,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:24:37,413 INFO L87 Difference]: Start difference. First operand 623 states and 874 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:38,110 INFO L93 Difference]: Finished difference Result 959 states and 1364 transitions. [2024-12-02 14:24:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:24:38,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 189 [2024-12-02 14:24:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:38,113 INFO L225 Difference]: With dead ends: 959 [2024-12-02 14:24:38,113 INFO L226 Difference]: Without dead ends: 661 [2024-12-02 14:24:38,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:24:38,114 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 139 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:38,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 636 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:24:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-12-02 14:24:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 619. [2024-12-02 14:24:38,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 532 states have (on average 1.3270676691729324) internal successors, (706), 532 states have internal predecessors, (706), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 868 transitions. [2024-12-02 14:24:38,166 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 868 transitions. Word has length 189 [2024-12-02 14:24:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:38,166 INFO L471 AbstractCegarLoop]: Abstraction has 619 states and 868 transitions. [2024-12-02 14:24:38,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 868 transitions. [2024-12-02 14:24:38,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 14:24:38,167 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:38,167 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:38,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 14:24:38,167 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:38,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:38,167 INFO L85 PathProgramCache]: Analyzing trace with hash -331971584, now seen corresponding path program 1 times [2024-12-02 14:24:38,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:38,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518060312] [2024-12-02 14:24:38,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:38,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:42,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:42,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518060312] [2024-12-02 14:24:42,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518060312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:42,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:42,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 14:24:42,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194511111] [2024-12-02 14:24:42,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:42,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:24:42,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:42,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:24:42,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:24:42,135 INFO L87 Difference]: Start difference. First operand 619 states and 868 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:44,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:44,419 INFO L93 Difference]: Finished difference Result 1208 states and 1706 transitions. [2024-12-02 14:24:44,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:24:44,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 189 [2024-12-02 14:24:44,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:44,423 INFO L225 Difference]: With dead ends: 1208 [2024-12-02 14:24:44,423 INFO L226 Difference]: Without dead ends: 912 [2024-12-02 14:24:44,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:24:44,425 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 207 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:44,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 723 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 14:24:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-12-02 14:24:44,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 639. [2024-12-02 14:24:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 552 states have (on average 1.3369565217391304) internal successors, (738), 552 states have internal predecessors, (738), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 900 transitions. [2024-12-02 14:24:44,480 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 900 transitions. Word has length 189 [2024-12-02 14:24:44,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:44,480 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 900 transitions. [2024-12-02 14:24:44,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:44,480 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 900 transitions. [2024-12-02 14:24:44,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 14:24:44,481 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:44,481 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:44,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 14:24:44,481 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:44,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:44,482 INFO L85 PathProgramCache]: Analyzing trace with hash -32128573, now seen corresponding path program 1 times [2024-12-02 14:24:44,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:44,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247949084] [2024-12-02 14:24:44,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:44,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:44,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:44,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247949084] [2024-12-02 14:24:44,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247949084] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:44,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:44,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:24:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578032895] [2024-12-02 14:24:44,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:44,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:24:44,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:44,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:24:44,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:24:44,549 INFO L87 Difference]: Start difference. First operand 639 states and 900 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:44,711 INFO L93 Difference]: Finished difference Result 1097 states and 1573 transitions. [2024-12-02 14:24:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:24:44,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 190 [2024-12-02 14:24:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:44,714 INFO L225 Difference]: With dead ends: 1097 [2024-12-02 14:24:44,714 INFO L226 Difference]: Without dead ends: 753 [2024-12-02 14:24:44,715 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 [2024-12-02 14:24:44,715 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 36 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:44,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 282 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:24:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-12-02 14:24:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 677. [2024-12-02 14:24:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 590 states have (on average 1.3440677966101695) internal successors, (793), 590 states have internal predecessors, (793), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 955 transitions. [2024-12-02 14:24:44,769 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 955 transitions. Word has length 190 [2024-12-02 14:24:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:44,770 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 955 transitions. [2024-12-02 14:24:44,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 955 transitions. [2024-12-02 14:24:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 14:24:44,770 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:44,770 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:44,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 14:24:44,771 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:44,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1308335992, now seen corresponding path program 1 times [2024-12-02 14:24:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:44,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364955456] [2024-12-02 14:24:44,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:44,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:45,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:45,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364955456] [2024-12-02 14:24:45,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364955456] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:45,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:45,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:24:45,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027642022] [2024-12-02 14:24:45,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:45,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:24:45,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:45,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:24:45,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:24:45,313 INFO L87 Difference]: Start difference. First operand 677 states and 955 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:47,161 INFO L93 Difference]: Finished difference Result 1201 states and 1684 transitions. [2024-12-02 14:24:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 14:24:47,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 192 [2024-12-02 14:24:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:47,164 INFO L225 Difference]: With dead ends: 1201 [2024-12-02 14:24:47,164 INFO L226 Difference]: Without dead ends: 779 [2024-12-02 14:24:47,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-12-02 14:24:47,164 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 178 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:47,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 961 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 14:24:47,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-12-02 14:24:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 689. [2024-12-02 14:24:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 602 states have (on average 1.3372093023255813) internal successors, (805), 602 states have internal predecessors, (805), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 967 transitions. [2024-12-02 14:24:47,236 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 967 transitions. Word has length 192 [2024-12-02 14:24:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:47,236 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 967 transitions. [2024-12-02 14:24:47,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 967 transitions. [2024-12-02 14:24:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 14:24:47,237 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:47,237 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:47,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 14:24:47,237 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:47,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash -672343160, now seen corresponding path program 1 times [2024-12-02 14:24:47,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:47,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396459101] [2024-12-02 14:24:47,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:24:49,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:24:49,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396459101] [2024-12-02 14:24:49,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396459101] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:24:49,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:24:49,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:24:49,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648042288] [2024-12-02 14:24:49,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:24:49,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:24:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:24:49,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:24:49,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:24:49,785 INFO L87 Difference]: Start difference. First operand 689 states and 967 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:24:51,589 INFO L93 Difference]: Finished difference Result 1203 states and 1685 transitions. [2024-12-02 14:24:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:24:51,589 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 192 [2024-12-02 14:24:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:24:51,591 INFO L225 Difference]: With dead ends: 1203 [2024-12-02 14:24:51,591 INFO L226 Difference]: Without dead ends: 781 [2024-12-02 14:24:51,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:24:51,592 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 264 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:24:51,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 634 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:24:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2024-12-02 14:24:51,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 699. [2024-12-02 14:24:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 612 states have (on average 1.3316993464052287) internal successors, (815), 612 states have internal predecessors, (815), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:24:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 977 transitions. [2024-12-02 14:24:51,650 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 977 transitions. Word has length 192 [2024-12-02 14:24:51,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:24:51,651 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 977 transitions. [2024-12-02 14:24:51,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:24:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 977 transitions. [2024-12-02 14:24:51,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 14:24:51,651 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:24:51,652 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:24:51,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 14:24:51,652 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:24:51,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:24:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1693411514, now seen corresponding path program 1 times [2024-12-02 14:24:51,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:24:51,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096453911] [2024-12-02 14:24:51,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:24:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:24:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:25:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:25:36,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:25:36,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096453911] [2024-12-02 14:25:36,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096453911] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:25:36,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:25:36,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 14:25:36,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813928626] [2024-12-02 14:25:36,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:25:36,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 14:25:36,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:25:36,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 14:25:36,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-12-02 14:25:36,657 INFO L87 Difference]: Start difference. First operand 699 states and 977 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:25:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:25:45,289 INFO L93 Difference]: Finished difference Result 838 states and 1123 transitions. [2024-12-02 14:25:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 14:25:45,290 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 192 [2024-12-02 14:25:45,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:25:45,292 INFO L225 Difference]: With dead ends: 838 [2024-12-02 14:25:45,293 INFO L226 Difference]: Without dead ends: 836 [2024-12-02 14:25:45,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=424, Invalid=1832, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 14:25:45,293 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 453 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:25:45,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1149 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-12-02 14:25:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-12-02 14:25:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 714. [2024-12-02 14:25:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 627 states have (on average 1.328548644338118) internal successors, (833), 627 states have internal predecessors, (833), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:25:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 995 transitions. [2024-12-02 14:25:45,352 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 995 transitions. Word has length 192 [2024-12-02 14:25:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:25:45,352 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 995 transitions. [2024-12-02 14:25:45,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:25:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 995 transitions. [2024-12-02 14:25:45,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 14:25:45,353 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:25:45,353 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:25:45,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 14:25:45,353 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:25:45,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:25:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1771920510, now seen corresponding path program 1 times [2024-12-02 14:25:45,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:25:45,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342243080] [2024-12-02 14:25:45,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:25:45,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:25:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:26:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:26:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:26:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342243080] [2024-12-02 14:26:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342243080] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:26:26,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:26:26,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 14:26:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505348751] [2024-12-02 14:26:26,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:26:26,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 14:26:26,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:26:26,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 14:26:26,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:26:26,495 INFO L87 Difference]: Start difference. First operand 714 states and 995 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:26:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:26:31,218 INFO L93 Difference]: Finished difference Result 861 states and 1151 transitions. [2024-12-02 14:26:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 14:26:31,219 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 192 [2024-12-02 14:26:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:26:31,221 INFO L225 Difference]: With dead ends: 861 [2024-12-02 14:26:31,221 INFO L226 Difference]: Without dead ends: 859 [2024-12-02 14:26:31,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=268, Invalid=1064, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 14:26:31,222 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 387 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:26:31,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 893 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 14:26:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-12-02 14:26:31,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 729. [2024-12-02 14:26:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 642 states have (on average 1.3255451713395638) internal successors, (851), 642 states have internal predecessors, (851), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:26:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1013 transitions. [2024-12-02 14:26:31,297 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1013 transitions. Word has length 192 [2024-12-02 14:26:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:26:31,297 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1013 transitions. [2024-12-02 14:26:31,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:26:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1013 transitions. [2024-12-02 14:26:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-12-02 14:26:31,298 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:26:31,298 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:26:31,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 14:26:31,298 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:26:31,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:26:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash 780432922, now seen corresponding path program 1 times [2024-12-02 14:26:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:26:31,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267858590] [2024-12-02 14:26:31,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:26:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:26:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:27:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:27:20,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:27:20,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267858590] [2024-12-02 14:27:20,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267858590] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:27:20,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:27:20,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 14:27:20,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280491793] [2024-12-02 14:27:20,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:27:20,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 14:27:20,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:27:20,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 14:27:20,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-12-02 14:27:20,166 INFO L87 Difference]: Start difference. First operand 729 states and 1013 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:27:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:27:27,014 INFO L93 Difference]: Finished difference Result 847 states and 1135 transitions. [2024-12-02 14:27:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 14:27:27,014 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 193 [2024-12-02 14:27:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:27:27,016 INFO L225 Difference]: With dead ends: 847 [2024-12-02 14:27:27,016 INFO L226 Difference]: Without dead ends: 845 [2024-12-02 14:27:27,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=501, Invalid=1949, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 14:27:27,017 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 550 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:27:27,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 1017 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 14:27:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-12-02 14:27:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 726. [2024-12-02 14:27:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 639 states have (on average 1.323943661971831) internal successors, (846), 639 states have internal predecessors, (846), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:27:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1008 transitions. [2024-12-02 14:27:27,078 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1008 transitions. Word has length 193 [2024-12-02 14:27:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:27:27,078 INFO L471 AbstractCegarLoop]: Abstraction has 726 states and 1008 transitions. [2024-12-02 14:27:27,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:27:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1008 transitions. [2024-12-02 14:27:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-12-02 14:27:27,079 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:27:27,079 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:27:27,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 14:27:27,079 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:27:27,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:27:27,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1653345954, now seen corresponding path program 1 times [2024-12-02 14:27:27,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:27:27,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105399717] [2024-12-02 14:27:27,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:27:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:27:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:28:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:28:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:28:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105399717] [2024-12-02 14:28:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105399717] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:28:08,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:28:08,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 14:28:08,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405145359] [2024-12-02 14:28:08,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:28:08,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 14:28:08,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:28:08,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 14:28:08,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2024-12-02 14:28:08,971 INFO L87 Difference]: Start difference. First operand 726 states and 1008 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:28:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:28:17,205 INFO L93 Difference]: Finished difference Result 879 states and 1168 transitions. [2024-12-02 14:28:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 14:28:17,206 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 193 [2024-12-02 14:28:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:28:17,207 INFO L225 Difference]: With dead ends: 879 [2024-12-02 14:28:17,208 INFO L226 Difference]: Without dead ends: 877 [2024-12-02 14:28:17,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=444, Invalid=1718, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 14:28:17,208 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 409 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:28:17,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1031 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 14:28:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-12-02 14:28:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 723. [2024-12-02 14:28:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 636 states have (on average 1.3223270440251573) internal successors, (841), 636 states have internal predecessors, (841), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:28:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1003 transitions. [2024-12-02 14:28:17,269 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1003 transitions. Word has length 193 [2024-12-02 14:28:17,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:28:17,269 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1003 transitions. [2024-12-02 14:28:17,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:28:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1003 transitions. [2024-12-02 14:28:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 14:28:17,270 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:28:17,270 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:28:17,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 14:28:17,271 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:28:17,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:28:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1086486685, now seen corresponding path program 1 times [2024-12-02 14:28:17,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:28:17,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673682510] [2024-12-02 14:28:17,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:28:17,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:28:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:29:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:29:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:29:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673682510] [2024-12-02 14:29:04,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673682510] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:29:04,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:29:04,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 14:29:04,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969813061] [2024-12-02 14:29:04,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:29:04,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 14:29:04,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:29:04,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 14:29:04,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:29:04,794 INFO L87 Difference]: Start difference. First operand 723 states and 1003 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:29:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:29:10,431 INFO L93 Difference]: Finished difference Result 806 states and 1089 transitions. [2024-12-02 14:29:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 14:29:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 196 [2024-12-02 14:29:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:29:10,433 INFO L225 Difference]: With dead ends: 806 [2024-12-02 14:29:10,433 INFO L226 Difference]: Without dead ends: 804 [2024-12-02 14:29:10,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 14:29:10,434 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 468 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:29:10,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1043 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 14:29:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-12-02 14:29:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 724. [2024-12-02 14:29:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 637 states have (on average 1.3233908948194661) internal successors, (843), 637 states have internal predecessors, (843), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:29:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1005 transitions. [2024-12-02 14:29:10,496 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1005 transitions. Word has length 196 [2024-12-02 14:29:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:29:10,496 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1005 transitions. [2024-12-02 14:29:10,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:29:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1005 transitions. [2024-12-02 14:29:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 14:29:10,497 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:29:10,497 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:29:10,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 14:29:10,498 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:29:10,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:29:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1007977689, now seen corresponding path program 1 times [2024-12-02 14:29:10,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:29:10,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685492146] [2024-12-02 14:29:10,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:29:10,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:29:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:29:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:29:55,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:29:55,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685492146] [2024-12-02 14:29:55,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685492146] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:29:55,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:29:55,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 14:29:55,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518752533] [2024-12-02 14:29:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:29:55,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 14:29:55,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:29:55,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 14:29:55,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:29:55,574 INFO L87 Difference]: Start difference. First operand 724 states and 1005 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:30:03,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:30:03,118 INFO L93 Difference]: Finished difference Result 823 states and 1109 transitions. [2024-12-02 14:30:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 14:30:03,119 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 196 [2024-12-02 14:30:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:30:03,121 INFO L225 Difference]: With dead ends: 823 [2024-12-02 14:30:03,121 INFO L226 Difference]: Without dead ends: 821 [2024-12-02 14:30:03,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 14:30:03,122 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 381 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:30:03,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1068 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 14:30:03,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-12-02 14:30:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 725. [2024-12-02 14:30:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 638 states have (on average 1.3244514106583072) internal successors, (845), 638 states have internal predecessors, (845), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:30:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1007 transitions. [2024-12-02 14:30:03,194 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1007 transitions. Word has length 196 [2024-12-02 14:30:03,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:30:03,194 INFO L471 AbstractCegarLoop]: Abstraction has 725 states and 1007 transitions. [2024-12-02 14:30:03,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:30:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1007 transitions. [2024-12-02 14:30:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 14:30:03,199 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:30:03,199 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:30:03,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 14:30:03,199 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:30:03,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:30:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1285252577, now seen corresponding path program 1 times [2024-12-02 14:30:03,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:30:03,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734528578] [2024-12-02 14:30:03,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:30:03,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:30:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:30:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:30:03,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:30:03,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734528578] [2024-12-02 14:30:03,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734528578] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:30:03,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:30:03,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:30:03,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028204137] [2024-12-02 14:30:03,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:30:03,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:30:03,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:30:03,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:30:03,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:30:03,667 INFO L87 Difference]: Start difference. First operand 725 states and 1007 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:30:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:30:04,551 INFO L93 Difference]: Finished difference Result 1205 states and 1688 transitions. [2024-12-02 14:30:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:30:04,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 196 [2024-12-02 14:30:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:30:04,554 INFO L225 Difference]: With dead ends: 1205 [2024-12-02 14:30:04,554 INFO L226 Difference]: Without dead ends: 742 [2024-12-02 14:30:04,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:30:04,555 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 155 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:30:04,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 691 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:30:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-12-02 14:30:04,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 684. [2024-12-02 14:30:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 597 states have (on average 1.3316582914572865) internal successors, (795), 597 states have internal predecessors, (795), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:30:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 957 transitions. [2024-12-02 14:30:04,617 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 957 transitions. Word has length 196 [2024-12-02 14:30:04,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:30:04,617 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 957 transitions. [2024-12-02 14:30:04,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 14:30:04,617 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 957 transitions. [2024-12-02 14:30:04,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 14:30:04,618 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:30:04,618 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:30:04,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 14:30:04,618 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:30:04,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:30:04,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1057931171, now seen corresponding path program 1 times [2024-12-02 14:30:04,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:30:04,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943396693] [2024-12-02 14:30:04,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:30:04,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:30:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:30:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:30:46,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:30:46,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943396693] [2024-12-02 14:30:46,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943396693] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:30:46,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:30:46,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 14:30:46,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625681847] [2024-12-02 14:30:46,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:30:46,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 14:30:46,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:30:46,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 14:30:46,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:30:46,144 INFO L87 Difference]: Start difference. First operand 684 states and 957 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:30:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:30:50,233 INFO L93 Difference]: Finished difference Result 750 states and 1025 transitions. [2024-12-02 14:30:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 14:30:50,234 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 197 [2024-12-02 14:30:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:30:50,237 INFO L225 Difference]: With dead ends: 750 [2024-12-02 14:30:50,237 INFO L226 Difference]: Without dead ends: 748 [2024-12-02 14:30:50,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 14:30:50,237 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 400 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:30:50,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1025 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 14:30:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2024-12-02 14:30:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 675. [2024-12-02 14:30:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 588 states have (on average 1.3333333333333333) internal successors, (784), 588 states have internal predecessors, (784), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:30:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 946 transitions. [2024-12-02 14:30:50,351 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 946 transitions. Word has length 197 [2024-12-02 14:30:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:30:50,351 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 946 transitions. [2024-12-02 14:30:50,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:30:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 946 transitions. [2024-12-02 14:30:50,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 14:30:50,352 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:30:50,352 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:30:50,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-12-02 14:30:50,352 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:30:50,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:30:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1375847705, now seen corresponding path program 1 times [2024-12-02 14:30:50,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:30:50,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189327107] [2024-12-02 14:30:50,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:30:50,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:30:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 14:31:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:31,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189327107] [2024-12-02 14:31:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189327107] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:31,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:31,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 14:31:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120734472] [2024-12-02 14:31:31,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:31,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 14:31:31,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:31,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 14:31:31,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:31:31,359 INFO L87 Difference]: Start difference. First operand 675 states and 946 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:31:35,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:35,978 INFO L93 Difference]: Finished difference Result 750 states and 1025 transitions. [2024-12-02 14:31:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:31:35,978 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 197 [2024-12-02 14:31:35,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:35,980 INFO L225 Difference]: With dead ends: 750 [2024-12-02 14:31:35,980 INFO L226 Difference]: Without dead ends: 748 [2024-12-02 14:31:35,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 14:31:35,981 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 302 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:35,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1072 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 14:31:35,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2024-12-02 14:31:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 666. [2024-12-02 14:31:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 579 states have (on average 1.3350604490500864) internal successors, (773), 579 states have internal predecessors, (773), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 14:31:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 935 transitions. [2024-12-02 14:31:36,043 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 935 transitions. Word has length 197 [2024-12-02 14:31:36,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:36,044 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 935 transitions. [2024-12-02 14:31:36,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 14:31:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 935 transitions. [2024-12-02 14:31:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-12-02 14:31:36,046 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:36,046 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:36,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-12-02 14:31:36,047 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:36,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1744925019, now seen corresponding path program 1 times [2024-12-02 14:31:36,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:36,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709722509] [2024-12-02 14:31:36,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:36,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5792 backedges. 16 proven. 52 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 14:31:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:36,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709722509] [2024-12-02 14:31:36,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709722509] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:36,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634023328] [2024-12-02 14:31:36,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:36,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:36,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:36,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:31:36,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:31:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:37,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 14:31:37,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:31:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5792 backedges. 5 proven. 2979 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2024-12-02 14:31:40,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:31:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634023328] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:40,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:31:40,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2024-12-02 14:31:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53200756] [2024-12-02 14:31:40,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:31:40,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 14:31:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:40,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 14:31:40,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:31:40,465 INFO L87 Difference]: Start difference. First operand 666 states and 935 transitions. Second operand has 20 states, 20 states have (on average 9.25) internal successors, (185), 20 states have internal predecessors, (185), 4 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-12-02 14:31:44,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:44,670 INFO L93 Difference]: Finished difference Result 3760 states and 5286 transitions. [2024-12-02 14:31:44,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 14:31:44,670 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.25) internal successors, (185), 20 states have internal predecessors, (185), 4 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) Word has length 361 [2024-12-02 14:31:44,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:44,675 INFO L225 Difference]: With dead ends: 3760 [2024-12-02 14:31:44,675 INFO L226 Difference]: Without dead ends: 3338 [2024-12-02 14:31:44,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=797, Invalid=3493, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 14:31:44,677 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 2799 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 3431 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2799 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 4240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 3431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:44,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2799 Valid, 2073 Invalid, 4240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 3431 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 14:31:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2024-12-02 14:31:44,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 1990. [2024-12-02 14:31:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1700 states have (on average 1.3276470588235294) internal successors, (2257), 1700 states have internal predecessors, (2257), 270 states have call successors, (270), 19 states have call predecessors, (270), 19 states have return successors, (270), 270 states have call predecessors, (270), 270 states have call successors, (270) [2024-12-02 14:31:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2797 transitions. [2024-12-02 14:31:44,835 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2797 transitions. Word has length 361 [2024-12-02 14:31:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:44,835 INFO L471 AbstractCegarLoop]: Abstraction has 1990 states and 2797 transitions. [2024-12-02 14:31:44,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.25) internal successors, (185), 20 states have internal predecessors, (185), 4 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-12-02 14:31:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2797 transitions. [2024-12-02 14:31:44,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-12-02 14:31:44,838 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:44,838 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:44,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 14:31:45,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:45,039 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:45,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:45,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1220267807, now seen corresponding path program 1 times [2024-12-02 14:31:45,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:45,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220624710] [2024-12-02 14:31:45,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:45,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5792 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 14:31:45,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:45,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220624710] [2024-12-02 14:31:45,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220624710] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:45,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077263325] [2024-12-02 14:31:45,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:45,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:45,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:45,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:31:45,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc7d955-b2c4-47ae-8e44-d52364b07c91/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:31:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:45,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 14:31:45,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:31:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5792 backedges. 2983 proven. 1 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2024-12-02 14:31:50,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:31:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5792 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5779 trivial. 0 not checked. [2024-12-02 14:31:54,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077263325] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:54,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:31:54,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 14] total 26 [2024-12-02 14:31:54,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882696668] [2024-12-02 14:31:54,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:54,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:31:54,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:54,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:31:54,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2024-12-02 14:31:54,470 INFO L87 Difference]: Start difference. First operand 1990 states and 2797 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27)