./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.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_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4494aec82e3354bd32c6c13af5c36deffc5336d06a7a21928d54585f4657c423 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:33:27,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:33:27,816 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:33:27,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:33:27,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:33:27,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:33:27,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:33:27,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:33:27,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:33:27,854 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:33:27,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:33:27,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:33:27,854 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:33:27,854 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:33:27,855 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:33:27,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:33:27,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:33:27,855 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:33:27,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:33:27,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:33:27,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:33:27,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:33:27,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:33:27,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:33:27,859 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:33:27,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:33:27,859 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:33:27,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:33:27,859 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:33:27,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:33:27,859 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:33:27,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:33:27,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:33:27,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:33:27,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:33:27,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:33:27,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:33:27,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:33:27,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:33:27,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:33:27,860 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:33:27,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:33:27,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:33:27,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:33:27,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:33:27,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:33:27,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:33:27,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:33:27,861 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_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4494aec82e3354bd32c6c13af5c36deffc5336d06a7a21928d54585f4657c423 [2024-11-27 23:33:28,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:33:28,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:33:28,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:33:28,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:33:28,177 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:33:28,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.i [2024-11-27 23:33:31,343 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/data/d68d9daf8/28ed54d4f34a495bb602f41f5c5e1fed/FLAG1339615cc [2024-11-27 23:33:31,630 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:33:31,631 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.i [2024-11-27 23:33:31,640 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/data/d68d9daf8/28ed54d4f34a495bb602f41f5c5e1fed/FLAG1339615cc [2024-11-27 23:33:31,655 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/data/d68d9daf8/28ed54d4f34a495bb602f41f5c5e1fed [2024-11-27 23:33:31,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:33:31,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:33:31,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:33:31,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:33:31,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:33:31,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:33:31" (1/1) ... [2024-11-27 23:33:31,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc8c87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:31, skipping insertion in model container [2024-11-27 23:33:31,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:33:31" (1/1) ... [2024-11-27 23:33:31,690 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:33:31,836 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_321c6f55-849d-4aae-a59b-be1f85a44d51/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.i[916,929] [2024-11-27 23:33:31,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:33:31,950 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:33:31,964 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_321c6f55-849d-4aae-a59b-be1f85a44d51/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-86.i[916,929] [2024-11-27 23:33:32,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:33:32,075 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:33:32,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32 WrapperNode [2024-11-27 23:33:32,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:33:32,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:33:32,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:33:32,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:33:32,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,177 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 308 [2024-11-27 23:33:32,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:33:32,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:33:32,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:33:32,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:33:32,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,201 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,241 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:33:32,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,264 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:33:32,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:33:32,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:33:32,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:33:32,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (1/1) ... [2024-11-27 23:33:32,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:33:32,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:32,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:33:32,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:33:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:33:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:33:32,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:33:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:33:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:33:32,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:33:32,477 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:33:32,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:33:33,200 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-27 23:33:33,201 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:33:33,220 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:33:33,220 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:33:33,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:33:33 BoogieIcfgContainer [2024-11-27 23:33:33,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:33:33,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:33:33,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:33:33,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:33:33,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:33:31" (1/3) ... [2024-11-27 23:33:33,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47822b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:33:33, skipping insertion in model container [2024-11-27 23:33:33,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:33:32" (2/3) ... [2024-11-27 23:33:33,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47822b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:33:33, skipping insertion in model container [2024-11-27 23:33:33,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:33:33" (3/3) ... [2024-11-27 23:33:33,236 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-86.i [2024-11-27 23:33:33,257 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:33:33,260 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-86.i that has 2 procedures, 134 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:33:33,327 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:33:33,340 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;@14e6bd84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:33:33,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:33:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 88 states have (on average 1.5) internal successors, (132), 89 states have internal predecessors, (132), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-27 23:33:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-27 23:33:33,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:33,363 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:33,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:33,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2053616696, now seen corresponding path program 1 times [2024-11-27 23:33:33,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:33,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680636808] [2024-11-27 23:33:33,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:33,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-27 23:33:33,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:33,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680636808] [2024-11-27 23:33:33,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680636808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:33:33,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086444572] [2024-11-27 23:33:33,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:33,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:33,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:33,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:33,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:33:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:34,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:33:34,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:33:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-27 23:33:34,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:33:34,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086444572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:34,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:33:34,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:33:34,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380894612] [2024-11-27 23:33:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:34,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:33:34,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:34,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:33:34,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:33:34,374 INFO L87 Difference]: Start difference. First operand has 134 states, 88 states have (on average 1.5) internal successors, (132), 89 states have internal predecessors, (132), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-27 23:33:34,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:34,419 INFO L93 Difference]: Finished difference Result 261 states and 473 transitions. [2024-11-27 23:33:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:33:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) Word has length 270 [2024-11-27 23:33:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:34,429 INFO L225 Difference]: With dead ends: 261 [2024-11-27 23:33:34,430 INFO L226 Difference]: Without dead ends: 130 [2024-11-27 23:33:34,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:33:34,441 INFO L435 NwaCegarLoop]: 208 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, 208 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 [2024-11-27 23:33:34,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:33:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-27 23:33:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-27 23:33:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 85 states have internal predecessors, (122), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-27 23:33:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 208 transitions. [2024-11-27 23:33:34,508 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 208 transitions. Word has length 270 [2024-11-27 23:33:34,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:34,509 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 208 transitions. [2024-11-27 23:33:34,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-27 23:33:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 208 transitions. [2024-11-27 23:33:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-27 23:33:34,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:34,522 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:34,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:33:34,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:33:34,723 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:34,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:34,724 INFO L85 PathProgramCache]: Analyzing trace with hash 794028050, now seen corresponding path program 1 times [2024-11-27 23:33:34,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:34,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144235286] [2024-11-27 23:33:34,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:34,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:33:35,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:35,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144235286] [2024-11-27 23:33:35,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144235286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:35,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:35,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:33:35,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008952887] [2024-11-27 23:33:35,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:35,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:33:35,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:35,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:33:35,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:33:35,686 INFO L87 Difference]: Start difference. First operand 130 states and 208 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:33:36,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:36,182 INFO L93 Difference]: Finished difference Result 385 states and 619 transitions. [2024-11-27 23:33:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:33:36,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 270 [2024-11-27 23:33:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:36,192 INFO L225 Difference]: With dead ends: 385 [2024-11-27 23:33:36,193 INFO L226 Difference]: Without dead ends: 258 [2024-11-27 23:33:36,195 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 [2024-11-27 23:33:36,198 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 192 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:36,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 715 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:33:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-27 23:33:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 238. [2024-11-27 23:33:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 149 states have (on average 1.4228187919463087) internal successors, (212), 149 states have internal predecessors, (212), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-27 23:33:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 384 transitions. [2024-11-27 23:33:36,272 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 384 transitions. Word has length 270 [2024-11-27 23:33:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:36,275 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 384 transitions. [2024-11-27 23:33:36,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:33:36,276 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 384 transitions. [2024-11-27 23:33:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-27 23:33:36,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:36,281 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:36,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:33:36,283 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:36,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:36,284 INFO L85 PathProgramCache]: Analyzing trace with hash -217089200, now seen corresponding path program 1 times [2024-11-27 23:33:36,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:36,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617041123] [2024-11-27 23:33:36,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:36,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:33:48,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:48,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617041123] [2024-11-27 23:33:48,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617041123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:48,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:48,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 23:33:48,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90107060] [2024-11-27 23:33:48,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:48,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:33:48,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:48,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:33:48,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:33:48,524 INFO L87 Difference]: Start difference. First operand 238 states and 384 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:33:53,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:53,537 INFO L93 Difference]: Finished difference Result 432 states and 680 transitions. [2024-11-27 23:33:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:33:53,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 270 [2024-11-27 23:33:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:53,542 INFO L225 Difference]: With dead ends: 432 [2024-11-27 23:33:53,542 INFO L226 Difference]: Without dead ends: 305 [2024-11-27 23:33:53,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:33:53,544 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 339 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:53,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1545 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:33:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-27 23:33:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 255. [2024-11-27 23:33:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 166 states have (on average 1.4156626506024097) internal successors, (235), 166 states have internal predecessors, (235), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-27 23:33:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 407 transitions. [2024-11-27 23:33:53,603 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 407 transitions. Word has length 270 [2024-11-27 23:33:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:53,605 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 407 transitions. [2024-11-27 23:33:53,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:33:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 407 transitions. [2024-11-27 23:33:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-27 23:33:53,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:53,612 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:53,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:33:53,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:53,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:53,614 INFO L85 PathProgramCache]: Analyzing trace with hash 483975378, now seen corresponding path program 1 times [2024-11-27 23:33:53,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:53,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442122951] [2024-11-27 23:33:53,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:53,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:33:53,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:53,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442122951] [2024-11-27 23:33:53,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442122951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:53,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:53,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:33:53,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733321634] [2024-11-27 23:33:53,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:53,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:33:53,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:53,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:33:53,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:33:53,773 INFO L87 Difference]: Start difference. First operand 255 states and 407 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, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:33:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:53,839 INFO L93 Difference]: Finished difference Result 508 states and 815 transitions. [2024-11-27 23:33:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:33:53,840 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, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 270 [2024-11-27 23:33:53,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:53,844 INFO L225 Difference]: With dead ends: 508 [2024-11-27 23:33:53,844 INFO L226 Difference]: Without dead ends: 381 [2024-11-27 23:33:53,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:33:53,846 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 200 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:53,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 416 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:33:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-27 23:33:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2024-11-27 23:33:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 246 states have (on average 1.4146341463414633) internal successors, (348), 246 states have internal predecessors, (348), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:33:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 606 transitions. [2024-11-27 23:33:53,895 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 606 transitions. Word has length 270 [2024-11-27 23:33:53,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:53,897 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 606 transitions. [2024-11-27 23:33:53,897 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, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:33:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 606 transitions. [2024-11-27 23:33:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-27 23:33:53,902 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:53,902 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:53,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:33:53,903 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:53,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:53,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1913671411, now seen corresponding path program 1 times [2024-11-27 23:33:53,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:53,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921184549] [2024-11-27 23:33:53,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:53,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:34:01,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:01,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921184549] [2024-11-27 23:34:01,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921184549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:01,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:01,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:34:01,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739618642] [2024-11-27 23:34:01,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:01,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:34:01,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:01,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:34:01,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:34:01,073 INFO L87 Difference]: Start difference. First operand 379 states and 606 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:34:02,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:34:02,509 INFO L93 Difference]: Finished difference Result 429 states and 664 transitions. [2024-11-27 23:34:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:34:02,510 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 271 [2024-11-27 23:34:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:34:02,514 INFO L225 Difference]: With dead ends: 429 [2024-11-27 23:34:02,514 INFO L226 Difference]: Without dead ends: 427 [2024-11-27 23:34:02,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:34:02,516 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 461 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:34:02,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1233 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:34:02,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-27 23:34:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 380. [2024-11-27 23:34:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 247 states have (on average 1.4129554655870444) internal successors, (349), 247 states have internal predecessors, (349), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:34:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 607 transitions. [2024-11-27 23:34:02,588 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 607 transitions. Word has length 271 [2024-11-27 23:34:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:34:02,589 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 607 transitions. [2024-11-27 23:34:02,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:34:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 607 transitions. [2024-11-27 23:34:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-27 23:34:02,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:34:02,595 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:34:02,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:34:02,596 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:34:02,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:02,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1701513997, now seen corresponding path program 1 times [2024-11-27 23:34:02,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:02,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741723077] [2024-11-27 23:34:02,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:34:02,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:34:02,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:02,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741723077] [2024-11-27 23:34:02,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741723077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:02,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:02,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:34:02,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661405469] [2024-11-27 23:34:02,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:02,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:34:02,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:02,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:34:02,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:34:02,994 INFO L87 Difference]: Start difference. First operand 380 states and 607 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:34:03,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:34:03,040 INFO L93 Difference]: Finished difference Result 642 states and 1026 transitions. [2024-11-27 23:34:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:34:03,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 271 [2024-11-27 23:34:03,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:34:03,044 INFO L225 Difference]: With dead ends: 642 [2024-11-27 23:34:03,045 INFO L226 Difference]: Without dead ends: 388 [2024-11-27 23:34:03,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:34:03,047 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 6 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:34:03,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 407 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:34:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-27 23:34:03,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 380. [2024-11-27 23:34:03,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 247 states have (on average 1.4008097165991902) internal successors, (346), 247 states have internal predecessors, (346), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:34:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 604 transitions. [2024-11-27 23:34:03,086 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 604 transitions. Word has length 271 [2024-11-27 23:34:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:34:03,087 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 604 transitions. [2024-11-27 23:34:03,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:34:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 604 transitions. [2024-11-27 23:34:03,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-27 23:34:03,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:34:03,094 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:34:03,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:34:03,094 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:34:03,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:03,095 INFO L85 PathProgramCache]: Analyzing trace with hash -818445937, now seen corresponding path program 1 times [2024-11-27 23:34:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154185838] [2024-11-27 23:34:03,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:34:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:34:11,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:11,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154185838] [2024-11-27 23:34:11,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154185838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:11,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:11,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:34:11,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809238095] [2024-11-27 23:34:11,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:11,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:34:11,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:11,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:34:11,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:34:11,247 INFO L87 Difference]: Start difference. First operand 380 states and 604 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-27 23:34:18,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:34:18,445 INFO L93 Difference]: Finished difference Result 434 states and 664 transitions. [2024-11-27 23:34:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:34:18,446 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 271 [2024-11-27 23:34:18,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:34:18,450 INFO L225 Difference]: With dead ends: 434 [2024-11-27 23:34:18,450 INFO L226 Difference]: Without dead ends: 432 [2024-11-27 23:34:18,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=338, Invalid=1068, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:34:18,452 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 619 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:34:18,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1546 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-27 23:34:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-27 23:34:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 380. [2024-11-27 23:34:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 247 states have (on average 1.4008097165991902) internal successors, (346), 247 states have internal predecessors, (346), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:34:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 604 transitions. [2024-11-27 23:34:18,513 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 604 transitions. Word has length 271 [2024-11-27 23:34:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:34:18,513 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 604 transitions. [2024-11-27 23:34:18,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-27 23:34:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 604 transitions. [2024-11-27 23:34:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-27 23:34:18,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:34:18,519 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:34:18,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:34:18,520 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:34:18,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1262568660, now seen corresponding path program 1 times [2024-11-27 23:34:18,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:18,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337077043] [2024-11-27 23:34:18,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:34:18,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:34:27,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:27,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337077043] [2024-11-27 23:34:27,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337077043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:27,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:27,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:34:27,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557136975] [2024-11-27 23:34:27,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:27,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:34:27,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:27,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:34:27,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:34:27,745 INFO L87 Difference]: Start difference. First operand 380 states and 604 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:34:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:34:36,130 INFO L93 Difference]: Finished difference Result 450 states and 683 transitions. [2024-11-27 23:34:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:34:36,131 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 271 [2024-11-27 23:34:36,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:34:36,135 INFO L225 Difference]: With dead ends: 450 [2024-11-27 23:34:36,135 INFO L226 Difference]: Without dead ends: 448 [2024-11-27 23:34:36,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=262, Invalid=668, Unknown=0, NotChecked=0, Total=930 [2024-11-27 23:34:36,137 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 437 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:34:36,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1214 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 23:34:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-27 23:34:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 390. [2024-11-27 23:34:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 257 states have (on average 1.3968871595330739) internal successors, (359), 257 states have internal predecessors, (359), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:34:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 617 transitions. [2024-11-27 23:34:36,185 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 617 transitions. Word has length 271 [2024-11-27 23:34:36,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:34:36,186 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 617 transitions. [2024-11-27 23:34:36,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:34:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 617 transitions. [2024-11-27 23:34:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-27 23:34:36,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:34:36,189 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:34:36,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:34:36,189 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:34:36,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash -582510290, now seen corresponding path program 1 times [2024-11-27 23:34:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:36,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72787950] [2024-11-27 23:34:36,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:34:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:34:46,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:46,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72787950] [2024-11-27 23:34:46,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72787950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:46,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:46,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:34:46,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329153064] [2024-11-27 23:34:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:46,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:34:46,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:46,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:34:46,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:34:46,657 INFO L87 Difference]: Start difference. First operand 390 states and 617 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:34:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:34:57,864 INFO L93 Difference]: Finished difference Result 444 states and 677 transitions. [2024-11-27 23:34:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:34:57,865 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 271 [2024-11-27 23:34:57,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:34:57,868 INFO L225 Difference]: With dead ends: 444 [2024-11-27 23:34:57,868 INFO L226 Difference]: Without dead ends: 442 [2024-11-27 23:34:57,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:34:57,870 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 322 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:34:57,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1568 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 23:34:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-27 23:34:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 390. [2024-11-27 23:34:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 257 states have (on average 1.3968871595330739) internal successors, (359), 257 states have internal predecessors, (359), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:34:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 617 transitions. [2024-11-27 23:34:57,917 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 617 transitions. Word has length 271 [2024-11-27 23:34:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:34:57,917 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 617 transitions. [2024-11-27 23:34:57,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:34:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 617 transitions. [2024-11-27 23:34:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:34:57,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:34:57,920 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:34:57,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:34:57,920 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:34:57,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash 451481748, now seen corresponding path program 1 times [2024-11-27 23:34:57,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:57,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158400587] [2024-11-27 23:34:57,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:34:57,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:35:06,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:06,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158400587] [2024-11-27 23:35:06,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158400587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:06,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:06,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 23:35:06,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21184844] [2024-11-27 23:35:06,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:06,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:35:06,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:06,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:35:06,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:35:06,748 INFO L87 Difference]: Start difference. First operand 390 states and 617 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-27 23:35:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:12,519 INFO L93 Difference]: Finished difference Result 432 states and 663 transitions. [2024-11-27 23:35:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:35:12,521 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), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 272 [2024-11-27 23:35:12,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:12,525 INFO L225 Difference]: With dead ends: 432 [2024-11-27 23:35:12,525 INFO L226 Difference]: Without dead ends: 430 [2024-11-27 23:35:12,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:35:12,531 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 374 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:12,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1801 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 23:35:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-27 23:35:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 387. [2024-11-27 23:35:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 254 states have (on average 1.3976377952755905) internal successors, (355), 254 states have internal predecessors, (355), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:35:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 613 transitions. [2024-11-27 23:35:12,592 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 613 transitions. Word has length 272 [2024-11-27 23:35:12,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:12,593 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 613 transitions. [2024-11-27 23:35:12,593 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), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-27 23:35:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 613 transitions. [2024-11-27 23:35:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:35:12,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:12,596 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:12,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:35:12,597 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:12,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash -429573735, now seen corresponding path program 1 times [2024-11-27 23:35:12,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:12,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84815005] [2024-11-27 23:35:12,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:12,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:35:26,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84815005] [2024-11-27 23:35:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84815005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:26,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:26,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:35:26,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949640818] [2024-11-27 23:35:26,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:26,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:35:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:26,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:35:26,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:35:26,506 INFO L87 Difference]: Start difference. First operand 387 states and 613 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:35:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:43,480 INFO L93 Difference]: Finished difference Result 445 states and 678 transitions. [2024-11-27 23:35:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:35:43,481 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 272 [2024-11-27 23:35:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:43,485 INFO L225 Difference]: With dead ends: 445 [2024-11-27 23:35:43,485 INFO L226 Difference]: Without dead ends: 443 [2024-11-27 23:35:43,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 23:35:43,486 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 303 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:43,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1668 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-27 23:35:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-27 23:35:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 392. [2024-11-27 23:35:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 259 states have (on average 1.3976833976833978) internal successors, (362), 259 states have internal predecessors, (362), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:35:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 620 transitions. [2024-11-27 23:35:43,543 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 620 transitions. Word has length 272 [2024-11-27 23:35:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:43,544 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 620 transitions. [2024-11-27 23:35:43,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:35:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 620 transitions. [2024-11-27 23:35:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:35:43,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:43,547 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:43,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:35:43,547 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:43,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1131429171, now seen corresponding path program 1 times [2024-11-27 23:35:43,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:43,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748609348] [2024-11-27 23:35:43,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:43,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:35:54,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:54,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748609348] [2024-11-27 23:35:54,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748609348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:54,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:54,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 23:35:54,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751989737] [2024-11-27 23:35:54,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:54,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:35:54,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:54,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:35:54,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:35:54,305 INFO L87 Difference]: Start difference. First operand 392 states and 620 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-27 23:36:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:36:13,128 INFO L93 Difference]: Finished difference Result 450 states and 683 transitions. [2024-11-27 23:36:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 23:36:13,130 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 272 [2024-11-27 23:36:13,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:36:13,133 INFO L225 Difference]: With dead ends: 450 [2024-11-27 23:36:13,133 INFO L226 Difference]: Without dead ends: 448 [2024-11-27 23:36:13,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=447, Invalid=1275, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 23:36:13,135 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 578 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:36:13,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1618 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-27 23:36:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-27 23:36:13,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 393. [2024-11-27 23:36:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 260 states have (on average 1.396153846153846) internal successors, (363), 260 states have internal predecessors, (363), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:36:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 621 transitions. [2024-11-27 23:36:13,179 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 621 transitions. Word has length 272 [2024-11-27 23:36:13,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:36:13,180 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 621 transitions. [2024-11-27 23:36:13,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-27 23:36:13,180 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 621 transitions. [2024-11-27 23:36:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:36:13,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:36:13,184 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:36:13,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:36:13,184 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:36:13,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:36:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash -822600745, now seen corresponding path program 1 times [2024-11-27 23:36:13,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:36:13,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083706444] [2024-11-27 23:36:13,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:36:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:36:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:36:25,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083706444] [2024-11-27 23:36:25,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083706444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:36:25,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:36:25,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:36:25,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348125219] [2024-11-27 23:36:25,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:36:25,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:36:25,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:25,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:36:25,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:36:25,050 INFO L87 Difference]: Start difference. First operand 393 states and 621 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:36:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:36:37,076 INFO L93 Difference]: Finished difference Result 441 states and 674 transitions. [2024-11-27 23:36:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:36:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 272 [2024-11-27 23:36:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:36:37,080 INFO L225 Difference]: With dead ends: 441 [2024-11-27 23:36:37,080 INFO L226 Difference]: Without dead ends: 439 [2024-11-27 23:36:37,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 23:36:37,082 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 301 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:36:37,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1666 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 23:36:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-27 23:36:37,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 393. [2024-11-27 23:36:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 260 states have (on average 1.396153846153846) internal successors, (363), 260 states have internal predecessors, (363), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:36:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 621 transitions. [2024-11-27 23:36:37,125 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 621 transitions. Word has length 272 [2024-11-27 23:36:37,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:36:37,126 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 621 transitions. [2024-11-27 23:36:37,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:36:37,126 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 621 transitions. [2024-11-27 23:36:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:36:37,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:36:37,128 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:36:37,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:36:37,128 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:36:37,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:36:37,129 INFO L85 PathProgramCache]: Analyzing trace with hash 738402161, now seen corresponding path program 1 times [2024-11-27 23:36:37,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:36:37,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371648527] [2024-11-27 23:36:37,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:36:37,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:36:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:36:46,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371648527] [2024-11-27 23:36:46,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371648527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:36:46,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:36:46,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:36:46,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296305190] [2024-11-27 23:36:46,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:36:46,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:36:46,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:46,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:36:46,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:36:46,823 INFO L87 Difference]: Start difference. First operand 393 states and 621 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:37:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:03,787 INFO L93 Difference]: Finished difference Result 440 states and 672 transitions. [2024-11-27 23:37:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 23:37:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 272 [2024-11-27 23:37:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:03,791 INFO L225 Difference]: With dead ends: 440 [2024-11-27 23:37:03,791 INFO L226 Difference]: Without dead ends: 438 [2024-11-27 23:37:03,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=410, Invalid=1072, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 23:37:03,792 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 286 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:03,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1398 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:37:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-27 23:37:03,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 391. [2024-11-27 23:37:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 258 states have (on average 1.3953488372093024) internal successors, (360), 258 states have internal predecessors, (360), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:37:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 618 transitions. [2024-11-27 23:37:03,841 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 618 transitions. Word has length 272 [2024-11-27 23:37:03,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:03,842 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 618 transitions. [2024-11-27 23:37:03,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:37:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 618 transitions. [2024-11-27 23:37:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:37:03,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:03,844 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:03,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:37:03,845 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:03,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:03,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1033595620, now seen corresponding path program 1 times [2024-11-27 23:37:03,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:03,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496507847] [2024-11-27 23:37:03,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:37:03,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:37:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496507847] [2024-11-27 23:37:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496507847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:37:23,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:37:23,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:37:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125394891] [2024-11-27 23:37:23,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:37:23,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:37:23,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:23,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:37:23,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:37:23,107 INFO L87 Difference]: Start difference. First operand 391 states and 618 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:37:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:38,499 INFO L93 Difference]: Finished difference Result 448 states and 681 transitions. [2024-11-27 23:37:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:37:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 272 [2024-11-27 23:37:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:38,503 INFO L225 Difference]: With dead ends: 448 [2024-11-27 23:37:38,503 INFO L226 Difference]: Without dead ends: 446 [2024-11-27 23:37:38,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=318, Invalid=804, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 23:37:38,505 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 375 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:38,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1566 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-27 23:37:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-27 23:37:38,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 397. [2024-11-27 23:37:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 264 states have (on average 1.393939393939394) internal successors, (368), 264 states have internal predecessors, (368), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:37:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 626 transitions. [2024-11-27 23:37:38,555 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 626 transitions. Word has length 272 [2024-11-27 23:37:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:38,556 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 626 transitions. [2024-11-27 23:37:38,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:37:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 626 transitions. [2024-11-27 23:37:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:37:38,559 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:38,559 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:38,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:37:38,560 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:38,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1713653990, now seen corresponding path program 1 times [2024-11-27 23:37:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:38,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388946866] [2024-11-27 23:37:38,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:37:38,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:37:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388946866] [2024-11-27 23:37:55,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388946866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:37:55,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:37:55,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 23:37:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149279532] [2024-11-27 23:37:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:37:55,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:37:55,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:55,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:37:55,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:37:55,668 INFO L87 Difference]: Start difference. First operand 397 states and 626 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:38:07,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:07,325 INFO L93 Difference]: Finished difference Result 442 states and 675 transitions. [2024-11-27 23:38:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:38:07,327 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), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 272 [2024-11-27 23:38:07,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:07,330 INFO L225 Difference]: With dead ends: 442 [2024-11-27 23:38:07,330 INFO L226 Difference]: Without dead ends: 440 [2024-11-27 23:38:07,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=341, Invalid=849, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 23:38:07,331 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 374 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:07,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1386 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 23:38:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-27 23:38:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 397. [2024-11-27 23:38:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 264 states have (on average 1.393939393939394) internal successors, (368), 264 states have internal predecessors, (368), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:38:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 626 transitions. [2024-11-27 23:38:07,373 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 626 transitions. Word has length 272 [2024-11-27 23:38:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:07,374 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 626 transitions. [2024-11-27 23:38:07,374 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), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:38:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 626 transitions. [2024-11-27 23:38:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-27 23:38:07,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:07,377 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:07,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:38:07,378 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:07,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:07,378 INFO L85 PathProgramCache]: Analyzing trace with hash 769914994, now seen corresponding path program 1 times [2024-11-27 23:38:07,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:07,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201775357] [2024-11-27 23:38:07,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:07,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:38:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201775357] [2024-11-27 23:38:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201775357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:18,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:18,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 23:38:18,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531887571] [2024-11-27 23:38:18,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:18,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:38:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:18,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:38:18,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:38:18,105 INFO L87 Difference]: Start difference. First operand 397 states and 626 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-27 23:38:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:33,001 INFO L93 Difference]: Finished difference Result 449 states and 683 transitions. [2024-11-27 23:38:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:38:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 273 [2024-11-27 23:38:33,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:33,004 INFO L225 Difference]: With dead ends: 449 [2024-11-27 23:38:33,004 INFO L226 Difference]: Without dead ends: 447 [2024-11-27 23:38:33,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=333, Invalid=927, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 23:38:33,005 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 516 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:33,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1739 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-27 23:38:33,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-27 23:38:33,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 400. [2024-11-27 23:38:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 267 states have (on average 1.3932584269662922) internal successors, (372), 267 states have internal predecessors, (372), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:38:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 630 transitions. [2024-11-27 23:38:33,046 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 630 transitions. Word has length 273 [2024-11-27 23:38:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:33,047 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 630 transitions. [2024-11-27 23:38:33,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-27 23:38:33,048 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 630 transitions. [2024-11-27 23:38:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-27 23:38:33,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:33,050 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:33,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:38:33,050 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:33,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:33,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1470979572, now seen corresponding path program 1 times [2024-11-27 23:38:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:33,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589332093] [2024-11-27 23:38:33,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:38:48,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:48,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589332093] [2024-11-27 23:38:48,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589332093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:48,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:48,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 23:38:48,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957853585] [2024-11-27 23:38:48,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:48,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:38:48,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:48,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:38:48,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:38:48,084 INFO L87 Difference]: Start difference. First operand 400 states and 630 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-27 23:39:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:04,548 INFO L93 Difference]: Finished difference Result 439 states and 672 transitions. [2024-11-27 23:39:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:39:04,549 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 273 [2024-11-27 23:39:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:04,552 INFO L225 Difference]: With dead ends: 439 [2024-11-27 23:39:04,552 INFO L226 Difference]: Without dead ends: 437 [2024-11-27 23:39:04,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 23:39:04,553 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 304 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:04,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1830 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-27 23:39:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-27 23:39:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 397. [2024-11-27 23:39:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 264 states have (on average 1.393939393939394) internal successors, (368), 264 states have internal predecessors, (368), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:39:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 626 transitions. [2024-11-27 23:39:04,602 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 626 transitions. Word has length 273 [2024-11-27 23:39:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:04,603 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 626 transitions. [2024-11-27 23:39:04,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-27 23:39:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 626 transitions. [2024-11-27 23:39:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-27 23:39:04,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:04,607 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:04,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:39:04,607 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:04,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:04,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2032042209, now seen corresponding path program 1 times [2024-11-27 23:39:04,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:04,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955871992] [2024-11-27 23:39:04,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:04,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:27,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:39:27,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:27,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955871992] [2024-11-27 23:39:27,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955871992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:27,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:27,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 23:39:27,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444890723] [2024-11-27 23:39:27,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:27,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:39:27,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:27,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:39:27,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:39:27,204 INFO L87 Difference]: Start difference. First operand 397 states and 626 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:39:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:45,097 INFO L93 Difference]: Finished difference Result 443 states and 676 transitions. [2024-11-27 23:39:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:39:45,098 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 273 [2024-11-27 23:39:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:45,101 INFO L225 Difference]: With dead ends: 443 [2024-11-27 23:39:45,101 INFO L226 Difference]: Without dead ends: 441 [2024-11-27 23:39:45,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=381, Invalid=1025, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:39:45,102 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 341 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:45,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1333 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-27 23:39:45,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2024-11-27 23:39:45,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 399. [2024-11-27 23:39:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 266 states have (on average 1.394736842105263) internal successors, (371), 266 states have internal predecessors, (371), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:39:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 629 transitions. [2024-11-27 23:39:45,150 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 629 transitions. Word has length 273 [2024-11-27 23:39:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:45,151 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 629 transitions. [2024-11-27 23:39:45,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:39:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 629 transitions. [2024-11-27 23:39:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-27 23:39:45,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:45,154 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:45,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:39:45,154 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:45,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:45,155 INFO L85 PathProgramCache]: Analyzing trace with hash -701922181, now seen corresponding path program 1 times [2024-11-27 23:39:45,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:45,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787107363] [2024-11-27 23:39:45,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:45,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:40:00,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:00,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787107363] [2024-11-27 23:40:00,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787107363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:00,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 23:40:00,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020506909] [2024-11-27 23:40:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:00,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:40:00,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:00,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:40:00,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:40:00,512 INFO L87 Difference]: Start difference. First operand 399 states and 629 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:40:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:22,381 INFO L93 Difference]: Finished difference Result 448 states and 681 transitions. [2024-11-27 23:40:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 23:40:22,383 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 273 [2024-11-27 23:40:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:22,386 INFO L225 Difference]: With dead ends: 448 [2024-11-27 23:40:22,387 INFO L226 Difference]: Without dead ends: 446 [2024-11-27 23:40:22,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=495, Invalid=1311, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 23:40:22,388 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 289 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:22,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1603 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-27 23:40:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-27 23:40:22,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 400. [2024-11-27 23:40:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 267 states have (on average 1.3932584269662922) internal successors, (372), 267 states have internal predecessors, (372), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:40:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 630 transitions. [2024-11-27 23:40:22,440 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 630 transitions. Word has length 273 [2024-11-27 23:40:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:22,441 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 630 transitions. [2024-11-27 23:40:22,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:40:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 630 transitions. [2024-11-27 23:40:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-27 23:40:22,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:22,444 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:40:22,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:40:22,444 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:40:22,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1639015199, now seen corresponding path program 1 times [2024-11-27 23:40:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720146271] [2024-11-27 23:40:22,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:40:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:40:47,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:47,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720146271] [2024-11-27 23:40:47,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720146271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:47,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:47,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 23:40:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957988722] [2024-11-27 23:40:47,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:47,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:40:47,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:47,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:40:47,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:40:47,557 INFO L87 Difference]: Start difference. First operand 400 states and 630 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:41:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:02,180 INFO L93 Difference]: Finished difference Result 439 states and 672 transitions. [2024-11-27 23:41:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:41:02,182 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 273 [2024-11-27 23:41:02,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:02,184 INFO L225 Difference]: With dead ends: 439 [2024-11-27 23:41:02,184 INFO L226 Difference]: Without dead ends: 437 [2024-11-27 23:41:02,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=380, Invalid=952, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 23:41:02,186 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 371 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:02,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1384 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-27 23:41:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-27 23:41:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 400. [2024-11-27 23:41:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 267 states have (on average 1.3932584269662922) internal successors, (372), 267 states have internal predecessors, (372), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:41:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 630 transitions. [2024-11-27 23:41:02,229 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 630 transitions. Word has length 273 [2024-11-27 23:41:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:02,230 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 630 transitions. [2024-11-27 23:41:02,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:41:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 630 transitions. [2024-11-27 23:41:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-27 23:41:02,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:02,233 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:02,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:41:02,233 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:02,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:02,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1094949191, now seen corresponding path program 1 times [2024-11-27 23:41:02,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:02,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220100111] [2024-11-27 23:41:02,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:41:02,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:41:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:41:23,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:23,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220100111] [2024-11-27 23:41:23,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220100111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:41:23,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:41:23,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-27 23:41:23,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871701035] [2024-11-27 23:41:23,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:41:23,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:41:23,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:41:23,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:41:23,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:41:23,602 INFO L87 Difference]: Start difference. First operand 400 states and 630 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-27 23:41:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:56,675 INFO L93 Difference]: Finished difference Result 438 states and 670 transitions. [2024-11-27 23:41:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 23:41:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 273 [2024-11-27 23:41:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:56,679 INFO L225 Difference]: With dead ends: 438 [2024-11-27 23:41:56,680 INFO L226 Difference]: Without dead ends: 436 [2024-11-27 23:41:56,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=503, Invalid=1389, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 23:41:56,683 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 407 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:56,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1867 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2024-11-27 23:41:56,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-27 23:41:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 398. [2024-11-27 23:41:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 265 states have (on average 1.3924528301886792) internal successors, (369), 265 states have internal predecessors, (369), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:41:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 627 transitions. [2024-11-27 23:41:56,724 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 627 transitions. Word has length 273 [2024-11-27 23:41:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:56,725 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 627 transitions. [2024-11-27 23:41:56,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-27 23:41:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 627 transitions. [2024-11-27 23:41:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-27 23:41:56,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:56,728 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:56,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:41:56,728 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:56,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash -229402070, now seen corresponding path program 1 times [2024-11-27 23:41:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:56,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345260199] [2024-11-27 23:41:56,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:41:56,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:42:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:42:14,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:14,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345260199] [2024-11-27 23:42:14,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345260199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:42:14,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:42:14,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 23:42:14,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399772014] [2024-11-27 23:42:14,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:42:14,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:42:14,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:14,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:42:14,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:42:14,618 INFO L87 Difference]: Start difference. First operand 398 states and 627 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:42:35,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:42:35,687 INFO L93 Difference]: Finished difference Result 442 states and 675 transitions. [2024-11-27 23:42:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:42:35,688 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 274 [2024-11-27 23:42:35,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:42:35,690 INFO L225 Difference]: With dead ends: 442 [2024-11-27 23:42:35,691 INFO L226 Difference]: Without dead ends: 440 [2024-11-27 23:42:35,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=407, Invalid=999, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:42:35,692 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 264 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:42:35,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1796 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-27 23:42:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-27 23:42:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 398. [2024-11-27 23:42:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 265 states have (on average 1.3924528301886792) internal successors, (369), 265 states have internal predecessors, (369), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-27 23:42:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 627 transitions. [2024-11-27 23:42:35,720 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 627 transitions. Word has length 274 [2024-11-27 23:42:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:42:35,720 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 627 transitions. [2024-11-27 23:42:35,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:42:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 627 transitions. [2024-11-27 23:42:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-27 23:42:35,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:42:35,723 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:42:35,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:42:35,723 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:42:35,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:42:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 471662508, now seen corresponding path program 1 times [2024-11-27 23:42:35,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:42:35,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786082679] [2024-11-27 23:42:35,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:42:35,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:42:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:42:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-27 23:42:56,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786082679] [2024-11-27 23:42:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786082679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:42:56,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:42:56,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-27 23:42:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030777815] [2024-11-27 23:42:56,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:42:56,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 23:42:56,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:56,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 23:42:56,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:42:56,136 INFO L87 Difference]: Start difference. First operand 398 states and 627 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-27 23:43:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:43:18,800 INFO L93 Difference]: Finished difference Result 446 states and 683 transitions. [2024-11-27 23:43:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 23:43:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 274 [2024-11-27 23:43:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:43:18,804 INFO L225 Difference]: With dead ends: 446 [2024-11-27 23:43:18,804 INFO L226 Difference]: Without dead ends: 444 [2024-11-27 23:43:18,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=428, Invalid=1212, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 23:43:18,806 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 396 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:43:18,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1938 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-27 23:43:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-27 23:43:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 417. [2024-11-27 23:43:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 277 states have (on average 1.3754512635379061) internal successors, (381), 278 states have internal predecessors, (381), 135 states have call successors, (135), 4 states have call predecessors, (135), 4 states have return successors, (135), 134 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 23:43:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 651 transitions. [2024-11-27 23:43:18,846 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 651 transitions. Word has length 274 [2024-11-27 23:43:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:43:18,847 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 651 transitions. [2024-11-27 23:43:18,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-27 23:43:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 651 transitions. [2024-11-27 23:43:18,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-27 23:43:18,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:43:18,852 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 23:43:18,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 23:43:18,853 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:43:18,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:43:18,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1371025090, now seen corresponding path program 1 times [2024-11-27 23:43:18,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:43:18,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244861021] [2024-11-27 23:43:18,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:43:18,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:43:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:43:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14714 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14701 trivial. 0 not checked. [2024-11-27 23:43:33,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:43:33,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244861021] [2024-11-27 23:43:33,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244861021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:43:33,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:43:33,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:43:33,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609533346] [2024-11-27 23:43:33,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:43:33,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:43:33,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:43:33,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:43:33,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:43:33,873 INFO L87 Difference]: Start difference. First operand 417 states and 651 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:43:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:43:43,924 INFO L93 Difference]: Finished difference Result 752 states and 1161 transitions. [2024-11-27 23:43:43,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:43:43,926 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 537 [2024-11-27 23:43:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:43:43,934 INFO L225 Difference]: With dead ends: 752 [2024-11-27 23:43:43,935 INFO L226 Difference]: Without dead ends: 501 [2024-11-27 23:43:43,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:43:43,940 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 146 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:43:43,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1257 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:43:43,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-11-27 23:43:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 432. [2024-11-27 23:43:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 292 states have (on average 1.3767123287671232) internal successors, (402), 293 states have internal predecessors, (402), 135 states have call successors, (135), 4 states have call predecessors, (135), 4 states have return successors, (135), 134 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 23:43:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 672 transitions. [2024-11-27 23:43:44,005 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 672 transitions. Word has length 537 [2024-11-27 23:43:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:43:44,006 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 672 transitions. [2024-11-27 23:43:44,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:43:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 672 transitions. [2024-11-27 23:43:44,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-27 23:43:44,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:43:44,012 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 23:43:44,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:43:44,012 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:43:44,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:43:44,013 INFO L85 PathProgramCache]: Analyzing trace with hash 359907840, now seen corresponding path program 1 times [2024-11-27 23:43:44,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:43:44,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255628140] [2024-11-27 23:43:44,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:43:44,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:43:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:43:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14714 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14701 trivial. 0 not checked. [2024-11-27 23:43:54,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:43:54,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255628140] [2024-11-27 23:43:54,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255628140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:43:54,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:43:54,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:43:54,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33919173] [2024-11-27 23:43:54,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:43:54,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:43:54,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:43:54,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:43:54,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:43:54,839 INFO L87 Difference]: Start difference. First operand 432 states and 672 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:44:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:44:01,013 INFO L93 Difference]: Finished difference Result 799 states and 1220 transitions. [2024-11-27 23:44:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:44:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 537 [2024-11-27 23:44:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:44:01,017 INFO L225 Difference]: With dead ends: 799 [2024-11-27 23:44:01,017 INFO L226 Difference]: Without dead ends: 530 [2024-11-27 23:44:01,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:44:01,018 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 107 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:44:01,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1478 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:44:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-27 23:44:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 428. [2024-11-27 23:44:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 288 states have (on average 1.375) internal successors, (396), 289 states have internal predecessors, (396), 135 states have call successors, (135), 4 states have call predecessors, (135), 4 states have return successors, (135), 134 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 23:44:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 666 transitions. [2024-11-27 23:44:01,066 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 666 transitions. Word has length 537 [2024-11-27 23:44:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:44:01,067 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 666 transitions. [2024-11-27 23:44:01,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-27 23:44:01,068 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 666 transitions. [2024-11-27 23:44:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-27 23:44:01,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:44:01,072 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 23:44:01,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:44:01,075 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:44:01,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:44:01,075 INFO L85 PathProgramCache]: Analyzing trace with hash -394393151, now seen corresponding path program 1 times [2024-11-27 23:44:01,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:44:01,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436578002] [2024-11-27 23:44:01,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:44:01,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:44:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:44:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14714 backedges. 5 proven. 89 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-27 23:44:23,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:44:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436578002] [2024-11-27 23:44:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436578002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:44:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317248469] [2024-11-27 23:44:23,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:44:23,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:44:23,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:44:23,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:44:23,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321c6f55-849d-4aae-a59b-be1f85a44d51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:44:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:44:24,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-27 23:44:24,402 INFO L279 TraceCheckSpWp]: Computing forward predicates...