./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0b041aa2b39223b19922ade0fcc5fbdd940e679150ec973bead00d3f56ba2c8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:22:24,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:22:24,504 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:22:24,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:22:24,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:22:24,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:22:24,547 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:22:24,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:22:24,548 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:22:24,548 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:22:24,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:22:24,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:22:24,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:22:24,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:22:24,549 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:22:24,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:22:24,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:22:24,550 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:22:24,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:22:24,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:22:24,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:22:24,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:22:24,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:22:24,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:22:24,552 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:22:24,553 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:22:24,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:22:24,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:22:24,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:22:24,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:22:24,554 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_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b041aa2b39223b19922ade0fcc5fbdd940e679150ec973bead00d3f56ba2c8 [2024-11-23 23:22:24,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:22:24,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:22:24,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:22:24,889 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:22:24,889 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:22:24,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i [2024-11-23 23:22:27,813 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data/3af5e45be/5e541543f8524a2897aaae6044ff0272/FLAG49d935236 [2024-11-23 23:22:28,170 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:22:28,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i [2024-11-23 23:22:28,185 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data/3af5e45be/5e541543f8524a2897aaae6044ff0272/FLAG49d935236 [2024-11-23 23:22:28,212 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data/3af5e45be/5e541543f8524a2897aaae6044ff0272 [2024-11-23 23:22:28,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:22:28,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:22:28,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:22:28,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:22:28,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:22:28,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e901dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28, skipping insertion in model container [2024-11-23 23:22:28,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:22:28,454 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_601f5436-479d-4c6e-bad8-ded4ca30c185/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i[919,932] [2024-11-23 23:22:28,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:22:28,625 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:22:28,642 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_601f5436-479d-4c6e-bad8-ded4ca30c185/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i[919,932] [2024-11-23 23:22:28,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:22:28,737 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:22:28,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28 WrapperNode [2024-11-23 23:22:28,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:22:28,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:22:28,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:22:28,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:22:28,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,835 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 301 [2024-11-23 23:22:28,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:22:28,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:22:28,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:22:28,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:22:28,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,891 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:22:28,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,909 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,924 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:22:28,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:22:28,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:22:28,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:22:28,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (1/1) ... [2024-11-23 23:22:28,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:22:28,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:22:28,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:22:28,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:22:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:22:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:22:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:22:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:22:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:22:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:22:29,114 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:22:29,116 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:22:29,821 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-23 23:22:29,821 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:22:29,835 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:22:29,838 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:22:29,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:22:29 BoogieIcfgContainer [2024-11-23 23:22:29,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:22:29,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:22:29,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:22:29,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:22:29,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:22:28" (1/3) ... [2024-11-23 23:22:29,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b823b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:22:29, skipping insertion in model container [2024-11-23 23:22:29,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:28" (2/3) ... [2024-11-23 23:22:29,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b823b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:22:29, skipping insertion in model container [2024-11-23 23:22:29,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:22:29" (3/3) ... [2024-11-23 23:22:29,851 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i [2024-11-23 23:22:29,868 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:22:29,871 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i that has 2 procedures, 131 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:22:29,946 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:22:29,962 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;@3c40d4fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:22:29,963 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:22:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 80 states have (on average 1.425) internal successors, (114), 81 states have internal predecessors, (114), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 23:22:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:22:30,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:30,003 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:22:30,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:30,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash -757152195, now seen corresponding path program 1 times [2024-11-23 23:22:30,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:30,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096242327] [2024-11-23 23:22:30,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:30,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-23 23:22:30,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:30,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096242327] [2024-11-23 23:22:30,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096242327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:22:30,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395829889] [2024-11-23 23:22:30,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:30,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:22:30,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:22:30,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:22:30,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:22:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:30,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:22:30,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:22:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-23 23:22:30,992 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:22:30,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395829889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:22:30,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:22:30,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:22:30,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714317678] [2024-11-23 23:22:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:22:30,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:22:31,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:31,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:22:31,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:22:31,030 INFO L87 Difference]: Start difference. First operand has 131 states, 80 states have (on average 1.425) internal successors, (114), 81 states have internal predecessors, (114), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) 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, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:22:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:31,089 INFO L93 Difference]: Finished difference Result 255 states and 462 transitions. [2024-11-23 23:22:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:22:31,093 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, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 295 [2024-11-23 23:22:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:31,102 INFO L225 Difference]: With dead ends: 255 [2024-11-23 23:22:31,103 INFO L226 Difference]: Without dead ends: 127 [2024-11-23 23:22:31,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:22:31,110 INFO L435 NwaCegarLoop]: 203 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, 203 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 [2024-11-23 23:22:31,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:22:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-23 23:22:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-23 23:22:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 23:22:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 203 transitions. [2024-11-23 23:22:31,168 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 203 transitions. Word has length 295 [2024-11-23 23:22:31,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:31,168 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 203 transitions. [2024-11-23 23:22:31,169 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, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:22:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 203 transitions. [2024-11-23 23:22:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:22:31,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:31,175 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:22:31,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:22:31,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:22:31,376 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:31,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:31,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1235359541, now seen corresponding path program 1 times [2024-11-23 23:22:31,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:31,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691188714] [2024-11-23 23:22:31,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:31,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:22:35,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:35,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691188714] [2024-11-23 23:22:35,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691188714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:22:35,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:22:35,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:22:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623538974] [2024-11-23 23:22:35,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:22:35,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:22:35,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:35,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:22:35,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:22:35,047 INFO L87 Difference]: Start difference. First operand 127 states and 203 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:22:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:37,086 INFO L93 Difference]: Finished difference Result 418 states and 672 transitions. [2024-11-23 23:22:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:22:37,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2024-11-23 23:22:37,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:37,095 INFO L225 Difference]: With dead ends: 418 [2024-11-23 23:22:37,095 INFO L226 Difference]: Without dead ends: 294 [2024-11-23 23:22:37,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:22:37,101 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 384 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:37,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 860 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:22:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-23 23:22:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 212. [2024-11-23 23:22:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 113 states have (on average 1.2920353982300885) internal successors, (146), 113 states have internal predecessors, (146), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:22:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 338 transitions. [2024-11-23 23:22:37,217 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 338 transitions. Word has length 295 [2024-11-23 23:22:37,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:37,221 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 338 transitions. [2024-11-23 23:22:37,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:22:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 338 transitions. [2024-11-23 23:22:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:22:37,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:37,232 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:22:37,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:22:37,232 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:37,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:37,233 INFO L85 PathProgramCache]: Analyzing trace with hash 812657715, now seen corresponding path program 1 times [2024-11-23 23:22:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:37,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163408997] [2024-11-23 23:22:37,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:37,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:22:58,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163408997] [2024-11-23 23:22:58,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163408997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:22:58,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:22:58,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:22:58,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179637406] [2024-11-23 23:22:58,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:22:58,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:22:58,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:58,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:22:58,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:22:58,088 INFO L87 Difference]: Start difference. First operand 212 states and 338 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:23:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:03,929 INFO L93 Difference]: Finished difference Result 540 states and 867 transitions. [2024-11-23 23:23:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:23:03,930 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 295 [2024-11-23 23:23:03,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:03,938 INFO L225 Difference]: With dead ends: 540 [2024-11-23 23:23:03,938 INFO L226 Difference]: Without dead ends: 416 [2024-11-23 23:23:03,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:23:03,940 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 1191 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:03,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 1282 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 23:23:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-23 23:23:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 244. [2024-11-23 23:23:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 145 states have (on average 1.3793103448275863) internal successors, (200), 145 states have internal predecessors, (200), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:23:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 392 transitions. [2024-11-23 23:23:04,028 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 392 transitions. Word has length 295 [2024-11-23 23:23:04,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:04,030 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 392 transitions. [2024-11-23 23:23:04,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:23:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 392 transitions. [2024-11-23 23:23:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:23:04,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:04,037 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:04,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:23:04,038 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:04,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash -876286027, now seen corresponding path program 1 times [2024-11-23 23:23:04,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:04,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860035471] [2024-11-23 23:23:04,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:04,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:23:04,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:04,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860035471] [2024-11-23 23:23:04,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860035471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:04,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:04,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:23:04,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117024043] [2024-11-23 23:23:04,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:04,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:23:04,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:04,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:23:04,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:23:04,479 INFO L87 Difference]: Start difference. First operand 244 states and 392 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:23:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:04,603 INFO L93 Difference]: Finished difference Result 422 states and 676 transitions. [2024-11-23 23:23:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:23:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2024-11-23 23:23:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:04,607 INFO L225 Difference]: With dead ends: 422 [2024-11-23 23:23:04,607 INFO L226 Difference]: Without dead ends: 298 [2024-11-23 23:23:04,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:23:04,612 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 77 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:04,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 600 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:23:04,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-23 23:23:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 295. [2024-11-23 23:23:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 191 states have (on average 1.418848167539267) internal successors, (271), 192 states have internal predecessors, (271), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:23:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 471 transitions. [2024-11-23 23:23:04,691 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 471 transitions. Word has length 295 [2024-11-23 23:23:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:04,693 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 471 transitions. [2024-11-23 23:23:04,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:23:04,694 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 471 transitions. [2024-11-23 23:23:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:23:04,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:04,699 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:04,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:23:04,699 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:04,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash -4990735, now seen corresponding path program 1 times [2024-11-23 23:23:04,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:04,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42286802] [2024-11-23 23:23:04,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:04,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:23:24,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:24,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42286802] [2024-11-23 23:23:24,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42286802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:24,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:24,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:23:24,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401635562] [2024-11-23 23:23:24,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:24,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:23:24,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:24,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:23:24,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:23:24,556 INFO L87 Difference]: Start difference. First operand 295 states and 471 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:23:30,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:30,338 INFO L93 Difference]: Finished difference Result 629 states and 1005 transitions. [2024-11-23 23:23:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:23:30,339 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), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 295 [2024-11-23 23:23:30,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:30,347 INFO L225 Difference]: With dead ends: 629 [2024-11-23 23:23:30,347 INFO L226 Difference]: Without dead ends: 454 [2024-11-23 23:23:30,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:23:30,353 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 923 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:30,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1040 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-23 23:23:30,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-23 23:23:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 295. [2024-11-23 23:23:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 191 states have (on average 1.418848167539267) internal successors, (271), 192 states have internal predecessors, (271), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:23:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 471 transitions. [2024-11-23 23:23:30,434 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 471 transitions. Word has length 295 [2024-11-23 23:23:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:30,435 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 471 transitions. [2024-11-23 23:23:30,435 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), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:23:30,435 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 471 transitions. [2024-11-23 23:23:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:23:30,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:30,441 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:30,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:23:30,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:30,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash -570078793, now seen corresponding path program 1 times [2024-11-23 23:23:30,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:30,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316647176] [2024-11-23 23:23:30,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:30,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:23:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:31,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316647176] [2024-11-23 23:23:31,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316647176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:31,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:31,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:23:31,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643821371] [2024-11-23 23:23:31,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:31,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:23:31,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:31,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:23:31,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:23:31,478 INFO L87 Difference]: Start difference. First operand 295 states and 471 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:23:32,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:32,472 INFO L93 Difference]: Finished difference Result 552 states and 884 transitions. [2024-11-23 23:23:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:23:32,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2024-11-23 23:23:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:32,478 INFO L225 Difference]: With dead ends: 552 [2024-11-23 23:23:32,479 INFO L226 Difference]: Without dead ends: 377 [2024-11-23 23:23:32,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:23:32,480 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 183 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:32,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 815 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:23:32,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-23 23:23:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 297. [2024-11-23 23:23:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 193 states have (on average 1.4145077720207253) internal successors, (273), 194 states have internal predecessors, (273), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:23:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 473 transitions. [2024-11-23 23:23:32,539 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 473 transitions. Word has length 295 [2024-11-23 23:23:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:32,540 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 473 transitions. [2024-11-23 23:23:32,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:23:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 473 transitions. [2024-11-23 23:23:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:23:32,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:32,545 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:32,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:23:32,545 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:32,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:32,546 INFO L85 PathProgramCache]: Analyzing trace with hash -992780619, now seen corresponding path program 1 times [2024-11-23 23:23:32,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:32,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034361211] [2024-11-23 23:23:32,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:23:44,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034361211] [2024-11-23 23:23:44,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034361211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:44,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:44,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:23:44,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734995755] [2024-11-23 23:23:44,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:44,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:23:44,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:44,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:23:44,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:23:44,563 INFO L87 Difference]: Start difference. First operand 297 states and 473 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:23:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:47,276 INFO L93 Difference]: Finished difference Result 617 states and 984 transitions. [2024-11-23 23:23:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:23:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2024-11-23 23:23:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:47,280 INFO L225 Difference]: With dead ends: 617 [2024-11-23 23:23:47,280 INFO L226 Difference]: Without dead ends: 442 [2024-11-23 23:23:47,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:23:47,281 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 420 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:47,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 930 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:23:47,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-23 23:23:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 298. [2024-11-23 23:23:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 194 states have (on average 1.4175257731958764) internal successors, (275), 195 states have internal predecessors, (275), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:23:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 475 transitions. [2024-11-23 23:23:47,319 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 475 transitions. Word has length 295 [2024-11-23 23:23:47,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:47,321 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 475 transitions. [2024-11-23 23:23:47,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:23:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 475 transitions. [2024-11-23 23:23:47,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:23:47,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:47,326 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:47,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:23:47,326 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:47,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:47,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1810429069, now seen corresponding path program 1 times [2024-11-23 23:23:47,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:47,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593949183] [2024-11-23 23:23:47,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:47,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:24:02,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:02,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593949183] [2024-11-23 23:24:02,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593949183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:02,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:02,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:24:02,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318896413] [2024-11-23 23:24:02,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:02,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:24:02,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:02,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:24:02,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:24:02,282 INFO L87 Difference]: Start difference. First operand 298 states and 475 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:24:06,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:06,313 INFO L93 Difference]: Finished difference Result 685 states and 1098 transitions. [2024-11-23 23:24:06,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:24:06,315 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), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 295 [2024-11-23 23:24:06,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:06,318 INFO L225 Difference]: With dead ends: 685 [2024-11-23 23:24:06,318 INFO L226 Difference]: Without dead ends: 481 [2024-11-23 23:24:06,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:24:06,320 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 604 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:06,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1328 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:24:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-23 23:24:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 296. [2024-11-23 23:24:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 192 states have (on average 1.421875) internal successors, (273), 193 states have internal predecessors, (273), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:24:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 473 transitions. [2024-11-23 23:24:06,379 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 473 transitions. Word has length 295 [2024-11-23 23:24:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:06,380 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 473 transitions. [2024-11-23 23:24:06,380 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), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:24:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 473 transitions. [2024-11-23 23:24:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:24:06,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:06,383 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:06,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:24:06,383 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:06,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:06,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1014062877, now seen corresponding path program 1 times [2024-11-23 23:24:06,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:06,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142437822] [2024-11-23 23:24:06,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:06,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:24:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142437822] [2024-11-23 23:24:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142437822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:20,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:20,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:24:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073403909] [2024-11-23 23:24:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:20,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:24:20,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:20,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:24:20,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:24:20,872 INFO L87 Difference]: Start difference. First operand 296 states and 473 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:24:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:24,852 INFO L93 Difference]: Finished difference Result 927 states and 1498 transitions. [2024-11-23 23:24:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:24:24,853 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), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-23 23:24:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:24,857 INFO L225 Difference]: With dead ends: 927 [2024-11-23 23:24:24,857 INFO L226 Difference]: Without dead ends: 723 [2024-11-23 23:24:24,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:24:24,859 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 1519 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:24,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1171 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:24:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-23 23:24:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 301. [2024-11-23 23:24:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 197 states have (on average 1.4263959390862944) internal successors, (281), 198 states have internal predecessors, (281), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:24:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 481 transitions. [2024-11-23 23:24:24,918 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 481 transitions. Word has length 296 [2024-11-23 23:24:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:24,918 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 481 transitions. [2024-11-23 23:24:24,919 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), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:24:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 481 transitions. [2024-11-23 23:24:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:24:24,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:24,921 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:24,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:24:24,921 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:24,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:24,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1591960677, now seen corresponding path program 1 times [2024-11-23 23:24:24,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:24,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135435797] [2024-11-23 23:24:24,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:24,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:24:35,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:35,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135435797] [2024-11-23 23:24:35,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135435797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:35,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:35,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:24:35,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913347702] [2024-11-23 23:24:35,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:35,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:24:35,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:35,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:24:35,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:24:35,907 INFO L87 Difference]: Start difference. First operand 301 states and 481 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:24:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:39,521 INFO L93 Difference]: Finished difference Result 755 states and 1217 transitions. [2024-11-23 23:24:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:24:39,521 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-23 23:24:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:39,525 INFO L225 Difference]: With dead ends: 755 [2024-11-23 23:24:39,525 INFO L226 Difference]: Without dead ends: 551 [2024-11-23 23:24:39,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:24:39,527 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 1058 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:39,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1210 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:24:39,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-23 23:24:39,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 328. [2024-11-23 23:24:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 224 states have (on average 1.4598214285714286) internal successors, (327), 225 states have internal predecessors, (327), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:24:39,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 527 transitions. [2024-11-23 23:24:39,584 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 527 transitions. Word has length 296 [2024-11-23 23:24:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:39,585 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 527 transitions. [2024-11-23 23:24:39,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:24:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 527 transitions. [2024-11-23 23:24:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:24:39,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:39,588 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:39,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:24:39,588 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:39,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1831711327, now seen corresponding path program 1 times [2024-11-23 23:24:39,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:39,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978718468] [2024-11-23 23:24:39,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:24:51,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:51,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978718468] [2024-11-23 23:24:51,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978718468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:51,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:51,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:24:51,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741969902] [2024-11-23 23:24:51,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:51,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:24:51,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:51,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:24:51,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:24:51,523 INFO L87 Difference]: Start difference. First operand 328 states and 527 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:24:53,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:53,347 INFO L93 Difference]: Finished difference Result 722 states and 1163 transitions. [2024-11-23 23:24:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:24:53,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-23 23:24:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:53,351 INFO L225 Difference]: With dead ends: 722 [2024-11-23 23:24:53,351 INFO L226 Difference]: Without dead ends: 518 [2024-11-23 23:24:53,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:24:53,353 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 458 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:53,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 978 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:24:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-23 23:24:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 334. [2024-11-23 23:24:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 230 states have (on average 1.4608695652173913) internal successors, (336), 231 states have internal predecessors, (336), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:24:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 536 transitions. [2024-11-23 23:24:53,412 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 536 transitions. Word has length 296 [2024-11-23 23:24:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:53,413 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 536 transitions. [2024-11-23 23:24:53,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:24:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 536 transitions. [2024-11-23 23:24:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:24:53,415 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:53,416 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:53,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:24:53,416 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:53,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:53,417 INFO L85 PathProgramCache]: Analyzing trace with hash 774312227, now seen corresponding path program 1 times [2024-11-23 23:24:53,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:53,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243835435] [2024-11-23 23:24:53,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:53,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:25:03,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:03,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243835435] [2024-11-23 23:25:03,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243835435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:25:03,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:25:03,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:25:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579750529] [2024-11-23 23:25:03,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:25:03,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:25:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:03,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:25:03,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:25:03,504 INFO L87 Difference]: Start difference. First operand 334 states and 536 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:25:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:07,774 INFO L93 Difference]: Finished difference Result 739 states and 1188 transitions. [2024-11-23 23:25:07,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:25:07,775 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-23 23:25:07,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:07,779 INFO L225 Difference]: With dead ends: 739 [2024-11-23 23:25:07,779 INFO L226 Difference]: Without dead ends: 530 [2024-11-23 23:25:07,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:25:07,781 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 726 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:07,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1302 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:25:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-23 23:25:07,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 357. [2024-11-23 23:25:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 253 states have (on average 1.4861660079051384) internal successors, (376), 254 states have internal predecessors, (376), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:25:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 576 transitions. [2024-11-23 23:25:07,844 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 576 transitions. Word has length 296 [2024-11-23 23:25:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:07,844 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 576 transitions. [2024-11-23 23:25:07,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:25:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 576 transitions. [2024-11-23 23:25:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:25:07,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:07,847 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:25:07,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:25:07,848 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:07,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:07,848 INFO L85 PathProgramCache]: Analyzing trace with hash -213477657, now seen corresponding path program 1 times [2024-11-23 23:25:07,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:07,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76983591] [2024-11-23 23:25:07,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:07,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:25:09,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:09,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76983591] [2024-11-23 23:25:09,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76983591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:25:09,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:25:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:25:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119715973] [2024-11-23 23:25:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:25:09,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:25:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:09,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:25:09,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:25:09,352 INFO L87 Difference]: Start difference. First operand 357 states and 576 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:25:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:10,531 INFO L93 Difference]: Finished difference Result 738 states and 1185 transitions. [2024-11-23 23:25:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:25:10,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-23 23:25:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:10,536 INFO L225 Difference]: With dead ends: 738 [2024-11-23 23:25:10,536 INFO L226 Difference]: Without dead ends: 529 [2024-11-23 23:25:10,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:25:10,540 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 549 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:10,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 904 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:25:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-23 23:25:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 355. [2024-11-23 23:25:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 251 states have (on average 1.4900398406374502) internal successors, (374), 252 states have internal predecessors, (374), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:25:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 574 transitions. [2024-11-23 23:25:10,615 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 574 transitions. Word has length 296 [2024-11-23 23:25:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:10,616 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 574 transitions. [2024-11-23 23:25:10,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:25:10,616 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 574 transitions. [2024-11-23 23:25:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:25:10,618 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:10,619 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:25:10,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:25:10,619 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:10,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1148076383, now seen corresponding path program 1 times [2024-11-23 23:25:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:10,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203142673] [2024-11-23 23:25:10,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:10,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:25:10,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:10,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203142673] [2024-11-23 23:25:10,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203142673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:25:10,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:25:10,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:25:10,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860664013] [2024-11-23 23:25:10,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:25:10,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:25:10,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:10,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:25:10,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:25:10,964 INFO L87 Difference]: Start difference. First operand 355 states and 574 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, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:25:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:11,090 INFO L93 Difference]: Finished difference Result 633 states and 1019 transitions. [2024-11-23 23:25:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:25:11,091 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, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-23 23:25:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:11,094 INFO L225 Difference]: With dead ends: 633 [2024-11-23 23:25:11,094 INFO L226 Difference]: Without dead ends: 424 [2024-11-23 23:25:11,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:25:11,096 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 131 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:11,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 679 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:25:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-11-23 23:25:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 304. [2024-11-23 23:25:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 203 states have (on average 1.4285714285714286) internal successors, (290), 203 states have internal predecessors, (290), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:25:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 482 transitions. [2024-11-23 23:25:11,168 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 482 transitions. Word has length 296 [2024-11-23 23:25:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:11,169 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 482 transitions. [2024-11-23 23:25:11,169 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, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:25:11,169 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 482 transitions. [2024-11-23 23:25:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:25:11,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:11,171 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:25:11,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:25:11,172 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:11,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1457947171, now seen corresponding path program 1 times [2024-11-23 23:25:11,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:11,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610529066] [2024-11-23 23:25:11,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:11,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:25:25,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:25,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610529066] [2024-11-23 23:25:25,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610529066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:25:25,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:25:25,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:25:25,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141390234] [2024-11-23 23:25:25,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:25:25,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:25:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:25,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:25:25,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:25:25,396 INFO L87 Difference]: Start difference. First operand 304 states and 482 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:25:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:31,246 INFO L93 Difference]: Finished difference Result 652 states and 1029 transitions. [2024-11-23 23:25:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:25:31,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-23 23:25:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:31,250 INFO L225 Difference]: With dead ends: 652 [2024-11-23 23:25:31,250 INFO L226 Difference]: Without dead ends: 477 [2024-11-23 23:25:31,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:25:31,251 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 693 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:31,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1580 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:25:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-23 23:25:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 308. [2024-11-23 23:25:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 207 states have (on average 1.4251207729468598) internal successors, (295), 207 states have internal predecessors, (295), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:25:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 487 transitions. [2024-11-23 23:25:31,322 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 487 transitions. Word has length 296 [2024-11-23 23:25:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:31,324 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 487 transitions. [2024-11-23 23:25:31,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:25:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 487 transitions. [2024-11-23 23:25:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:25:31,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:31,326 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:25:31,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:25:31,326 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:31,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:31,327 INFO L85 PathProgramCache]: Analyzing trace with hash 640298721, now seen corresponding path program 1 times [2024-11-23 23:25:31,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:31,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395711705] [2024-11-23 23:25:31,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:25:45,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395711705] [2024-11-23 23:25:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395711705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:25:45,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:25:45,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:25:45,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489834612] [2024-11-23 23:25:45,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:25:45,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:25:45,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:45,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:25:45,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:25:45,354 INFO L87 Difference]: Start difference. First operand 308 states and 487 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:25:49,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:49,148 INFO L93 Difference]: Finished difference Result 761 states and 1208 transitions. [2024-11-23 23:25:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:25:49,149 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-23 23:25:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:49,152 INFO L225 Difference]: With dead ends: 761 [2024-11-23 23:25:49,152 INFO L226 Difference]: Without dead ends: 586 [2024-11-23 23:25:49,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:25:49,155 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 492 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:49,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1133 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 23:25:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-23 23:25:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 460. [2024-11-23 23:25:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 309 states have (on average 1.4466019417475728) internal successors, (447), 309 states have internal predecessors, (447), 144 states have call successors, (144), 6 states have call predecessors, (144), 6 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:25:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 735 transitions. [2024-11-23 23:25:49,237 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 735 transitions. Word has length 296 [2024-11-23 23:25:49,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:49,238 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 735 transitions. [2024-11-23 23:25:49,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:25:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 735 transitions. [2024-11-23 23:25:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-23 23:25:49,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:49,241 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:25:49,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:25:49,241 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:49,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:49,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1554131378, now seen corresponding path program 1 times [2024-11-23 23:25:49,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:49,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709524736] [2024-11-23 23:25:49,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:49,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:26:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:26:16,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:26:16,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709524736] [2024-11-23 23:26:16,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709524736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:26:16,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:26:16,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:26:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433223951] [2024-11-23 23:26:16,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:26:16,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:26:16,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:26:16,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:26:16,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:26:16,303 INFO L87 Difference]: Start difference. First operand 460 states and 735 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:26:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:26:18,061 INFO L93 Difference]: Finished difference Result 971 states and 1547 transitions. [2024-11-23 23:26:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:26:18,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 297 [2024-11-23 23:26:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:26:18,065 INFO L225 Difference]: With dead ends: 971 [2024-11-23 23:26:18,065 INFO L226 Difference]: Without dead ends: 629 [2024-11-23 23:26:18,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:26:18,067 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 144 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:26:18,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1392 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:26:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-23 23:26:18,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 569. [2024-11-23 23:26:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 416 states have (on average 1.5048076923076923) internal successors, (626), 416 states have internal predecessors, (626), 144 states have call successors, (144), 8 states have call predecessors, (144), 8 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:26:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 914 transitions. [2024-11-23 23:26:18,161 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 914 transitions. Word has length 297 [2024-11-23 23:26:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:26:18,162 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 914 transitions. [2024-11-23 23:26:18,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:26:18,163 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 914 transitions. [2024-11-23 23:26:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-23 23:26:18,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:26:18,165 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:26:18,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:26:18,165 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:26:18,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:26:18,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1372589103, now seen corresponding path program 1 times [2024-11-23 23:26:18,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:26:18,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462261830] [2024-11-23 23:26:18,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:18,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:26:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:26:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:26:35,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:26:35,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462261830] [2024-11-23 23:26:35,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462261830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:26:35,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:26:35,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:26:35,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155771483] [2024-11-23 23:26:35,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:26:35,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:26:35,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:26:35,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:26:35,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:26:35,050 INFO L87 Difference]: Start difference. First operand 569 states and 914 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:26:37,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:26:37,868 INFO L93 Difference]: Finished difference Result 1196 states and 1911 transitions. [2024-11-23 23:26:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:26:37,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2024-11-23 23:26:37,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:26:37,873 INFO L225 Difference]: With dead ends: 1196 [2024-11-23 23:26:37,873 INFO L226 Difference]: Without dead ends: 770 [2024-11-23 23:26:37,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:26:37,875 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 551 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:26:37,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1088 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:26:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-23 23:26:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 604. [2024-11-23 23:26:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 451 states have (on average 1.523281596452328) internal successors, (687), 451 states have internal predecessors, (687), 144 states have call successors, (144), 8 states have call predecessors, (144), 8 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:26:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 975 transitions. [2024-11-23 23:26:37,981 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 975 transitions. Word has length 297 [2024-11-23 23:26:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:26:37,982 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 975 transitions. [2024-11-23 23:26:37,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:26:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 975 transitions. [2024-11-23 23:26:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-23 23:26:37,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:26:37,985 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:26:37,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:26:37,985 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:26:37,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:26:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1090435887, now seen corresponding path program 1 times [2024-11-23 23:26:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:26:37,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754546164] [2024-11-23 23:26:37,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:37,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:26:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:26:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:26:47,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:26:47,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754546164] [2024-11-23 23:26:47,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754546164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:26:47,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:26:47,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:26:47,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457226140] [2024-11-23 23:26:47,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:26:47,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:26:47,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:26:47,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:26:47,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:26:47,449 INFO L87 Difference]: Start difference. First operand 604 states and 975 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 3 states have call successors, (48) [2024-11-23 23:26:50,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:26:50,201 INFO L93 Difference]: Finished difference Result 1365 states and 2190 transitions. [2024-11-23 23:26:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:26:50,202 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 3 states have call successors, (48) Word has length 297 [2024-11-23 23:26:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:26:50,211 INFO L225 Difference]: With dead ends: 1365 [2024-11-23 23:26:50,215 INFO L226 Difference]: Without dead ends: 897 [2024-11-23 23:26:50,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:26:50,217 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 448 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:26:50,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1626 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:26:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2024-11-23 23:26:50,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 608. [2024-11-23 23:26:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 455 states have (on average 1.5208791208791208) internal successors, (692), 455 states have internal predecessors, (692), 144 states have call successors, (144), 8 states have call predecessors, (144), 8 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:26:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 980 transitions. [2024-11-23 23:26:50,379 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 980 transitions. Word has length 297 [2024-11-23 23:26:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:26:50,380 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 980 transitions. [2024-11-23 23:26:50,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 3 states have call successors, (48) [2024-11-23 23:26:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 980 transitions. [2024-11-23 23:26:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-23 23:26:50,382 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:26:50,382 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:26:50,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:26:50,383 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:26:50,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:26:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1513137713, now seen corresponding path program 1 times [2024-11-23 23:26:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:26:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807556945] [2024-11-23 23:26:50,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:26:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:27:02,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:02,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807556945] [2024-11-23 23:27:02,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807556945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:02,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:02,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:27:02,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560094162] [2024-11-23 23:27:02,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:02,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:27:02,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:02,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:27:02,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:27:02,245 INFO L87 Difference]: Start difference. First operand 608 states and 980 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:03,134 INFO L93 Difference]: Finished difference Result 1332 states and 2156 transitions. [2024-11-23 23:27:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:27:03,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 297 [2024-11-23 23:27:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:03,139 INFO L225 Difference]: With dead ends: 1332 [2024-11-23 23:27:03,139 INFO L226 Difference]: Without dead ends: 864 [2024-11-23 23:27:03,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:03,141 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 316 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:03,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 827 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:27:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2024-11-23 23:27:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 577. [2024-11-23 23:27:03,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 424 states have (on average 1.5047169811320755) internal successors, (638), 424 states have internal predecessors, (638), 144 states have call successors, (144), 8 states have call predecessors, (144), 8 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:27:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 926 transitions. [2024-11-23 23:27:03,269 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 926 transitions. Word has length 297 [2024-11-23 23:27:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:03,270 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 926 transitions. [2024-11-23 23:27:03,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 926 transitions. [2024-11-23 23:27:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-23 23:27:03,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:03,272 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:03,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:27:03,272 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:03,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash -221157217, now seen corresponding path program 1 times [2024-11-23 23:27:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:03,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644518707] [2024-11-23 23:27:03,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:27:04,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644518707] [2024-11-23 23:27:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644518707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:04,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:04,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:27:04,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56293660] [2024-11-23 23:27:04,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:04,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:27:04,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:04,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:27:04,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:27:04,474 INFO L87 Difference]: Start difference. First operand 577 states and 926 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:04,915 INFO L93 Difference]: Finished difference Result 978 states and 1568 transitions. [2024-11-23 23:27:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:27:04,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-11-23 23:27:04,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:04,920 INFO L225 Difference]: With dead ends: 978 [2024-11-23 23:27:04,920 INFO L226 Difference]: Without dead ends: 746 [2024-11-23 23:27:04,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:27:04,922 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 188 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:04,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1562 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:27:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-23 23:27:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 629. [2024-11-23 23:27:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 476 states have (on average 1.5294117647058822) internal successors, (728), 476 states have internal predecessors, (728), 144 states have call successors, (144), 8 states have call predecessors, (144), 8 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:27:05,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1016 transitions. [2024-11-23 23:27:05,013 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1016 transitions. Word has length 298 [2024-11-23 23:27:05,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:05,013 INFO L471 AbstractCegarLoop]: Abstraction has 629 states and 1016 transitions. [2024-11-23 23:27:05,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1016 transitions. [2024-11-23 23:27:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-23 23:27:05,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:05,016 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:05,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:27:05,016 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:05,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash 694672808, now seen corresponding path program 1 times [2024-11-23 23:27:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294356606] [2024-11-23 23:27:05,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:27:05,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:05,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294356606] [2024-11-23 23:27:05,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294356606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:05,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:05,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:05,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556235664] [2024-11-23 23:27:05,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:05,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:05,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:05,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:05,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:05,140 INFO L87 Difference]: Start difference. First operand 629 states and 1016 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:05,336 INFO L93 Difference]: Finished difference Result 1356 states and 2189 transitions. [2024-11-23 23:27:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:05,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-11-23 23:27:05,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:05,342 INFO L225 Difference]: With dead ends: 1356 [2024-11-23 23:27:05,342 INFO L226 Difference]: Without dead ends: 827 [2024-11-23 23:27:05,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:05,347 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 67 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:05,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 400 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-23 23:27:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 823. [2024-11-23 23:27:05,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 644 states have (on average 1.5388198757763976) internal successors, (991), 646 states have internal predecessors, (991), 164 states have call successors, (164), 14 states have call predecessors, (164), 14 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-23 23:27:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1319 transitions. [2024-11-23 23:27:05,490 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1319 transitions. Word has length 298 [2024-11-23 23:27:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:05,491 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1319 transitions. [2024-11-23 23:27:05,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:05,491 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1319 transitions. [2024-11-23 23:27:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-23 23:27:05,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:05,493 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:05,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:27:05,494 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:05,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash 656045755, now seen corresponding path program 1 times [2024-11-23 23:27:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:05,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837286355] [2024-11-23 23:27:05,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:05,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:27:05,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:05,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837286355] [2024-11-23 23:27:05,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837286355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:05,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:05,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:05,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160534366] [2024-11-23 23:27:05,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:05,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:05,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:05,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:05,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:05,623 INFO L87 Difference]: Start difference. First operand 823 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:05,816 INFO L93 Difference]: Finished difference Result 1562 states and 2497 transitions. [2024-11-23 23:27:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:05,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-11-23 23:27:05,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:05,821 INFO L225 Difference]: With dead ends: 1562 [2024-11-23 23:27:05,821 INFO L226 Difference]: Without dead ends: 839 [2024-11-23 23:27:05,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:05,823 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 74 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:05,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 409 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2024-11-23 23:27:05,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 726. [2024-11-23 23:27:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 570 states have (on average 1.5421052631578946) internal successors, (879), 570 states have internal predecessors, (879), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:27:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1167 transitions. [2024-11-23 23:27:05,932 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1167 transitions. Word has length 298 [2024-11-23 23:27:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:05,933 INFO L471 AbstractCegarLoop]: Abstraction has 726 states and 1167 transitions. [2024-11-23 23:27:05,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1167 transitions. [2024-11-23 23:27:05,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-23 23:27:05,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:05,936 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:05,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:27:05,936 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:05,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash 490687195, now seen corresponding path program 1 times [2024-11-23 23:27:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:05,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431240061] [2024-11-23 23:27:05,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:05,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:27:06,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:06,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431240061] [2024-11-23 23:27:06,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431240061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:06,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:06,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:06,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191345660] [2024-11-23 23:27:06,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:06,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:06,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:06,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:06,173 INFO L87 Difference]: Start difference. First operand 726 states and 1167 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:06,614 INFO L93 Difference]: Finished difference Result 1601 states and 2549 transitions. [2024-11-23 23:27:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:06,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 299 [2024-11-23 23:27:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:06,620 INFO L225 Difference]: With dead ends: 1601 [2024-11-23 23:27:06,620 INFO L226 Difference]: Without dead ends: 979 [2024-11-23 23:27:06,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:06,622 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 158 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:06,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 741 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:27:06,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2024-11-23 23:27:06,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 788. [2024-11-23 23:27:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 632 states have (on average 1.5632911392405062) internal successors, (988), 632 states have internal predecessors, (988), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:27:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1276 transitions. [2024-11-23 23:27:06,719 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1276 transitions. Word has length 299 [2024-11-23 23:27:06,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:06,719 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1276 transitions. [2024-11-23 23:27:06,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:27:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1276 transitions. [2024-11-23 23:27:06,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-23 23:27:06,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:06,722 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:06,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:27:06,722 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:06,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:06,723 INFO L85 PathProgramCache]: Analyzing trace with hash -605673745, now seen corresponding path program 1 times [2024-11-23 23:27:06,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:06,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233360886] [2024-11-23 23:27:06,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:06,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:28:35,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:35,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233360886] [2024-11-23 23:28:35,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233360886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:35,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:35,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:28:35,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170776547] [2024-11-23 23:28:35,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:35,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:28:35,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:35,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:28:35,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:28:35,073 INFO L87 Difference]: Start difference. First operand 788 states and 1276 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:28:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:36,360 INFO L93 Difference]: Finished difference Result 1713 states and 2759 transitions. [2024-11-23 23:28:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:28:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 299 [2024-11-23 23:28:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:36,364 INFO L225 Difference]: With dead ends: 1713 [2024-11-23 23:28:36,364 INFO L226 Difference]: Without dead ends: 1029 [2024-11-23 23:28:36,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:28:36,365 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 280 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:36,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1849 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:28:36,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2024-11-23 23:28:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 728. [2024-11-23 23:28:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 572 states have (on average 1.5367132867132867) internal successors, (879), 572 states have internal predecessors, (879), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:28:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1167 transitions. [2024-11-23 23:28:36,479 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1167 transitions. Word has length 299 [2024-11-23 23:28:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:36,479 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1167 transitions. [2024-11-23 23:28:36,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:28:36,479 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1167 transitions. [2024-11-23 23:28:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-23 23:28:36,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:36,482 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:36,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:28:36,482 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:36,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1333579428, now seen corresponding path program 1 times [2024-11-23 23:28:36,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:36,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129749344] [2024-11-23 23:28:36,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:36,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:28:38,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:38,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129749344] [2024-11-23 23:28:38,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129749344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:38,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:38,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:28:38,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121445427] [2024-11-23 23:28:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:38,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:28:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:38,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:28:38,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:28:38,442 INFO L87 Difference]: Start difference. First operand 728 states and 1167 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:28:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:38,892 INFO L93 Difference]: Finished difference Result 943 states and 1500 transitions. [2024-11-23 23:28:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:28:38,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-11-23 23:28:38,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:38,895 INFO L225 Difference]: With dead ends: 943 [2024-11-23 23:28:38,895 INFO L226 Difference]: Without dead ends: 941 [2024-11-23 23:28:38,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:28:38,896 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 239 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:38,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1585 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:28:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-23 23:28:38,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 766. [2024-11-23 23:28:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 610 states have (on average 1.5524590163934426) internal successors, (947), 610 states have internal predecessors, (947), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:28:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1235 transitions. [2024-11-23 23:28:38,989 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1235 transitions. Word has length 300 [2024-11-23 23:28:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:38,989 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 1235 transitions. [2024-11-23 23:28:38,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:28:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1235 transitions. [2024-11-23 23:28:38,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-23 23:28:38,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:38,992 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:38,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:28:38,992 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:38,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:38,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1746409522, now seen corresponding path program 1 times [2024-11-23 23:28:38,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:38,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239347267] [2024-11-23 23:28:38,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:38,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:31:15,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239347267] [2024-11-23 23:31:15,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239347267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:15,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:15,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:31:15,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376902121] [2024-11-23 23:31:15,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:15,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:31:15,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:15,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:31:15,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:31:15,196 INFO L87 Difference]: Start difference. First operand 766 states and 1235 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:31:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:18,618 INFO L93 Difference]: Finished difference Result 883 states and 1402 transitions. [2024-11-23 23:31:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:31:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-11-23 23:31:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:18,623 INFO L225 Difference]: With dead ends: 883 [2024-11-23 23:31:18,623 INFO L226 Difference]: Without dead ends: 881 [2024-11-23 23:31:18,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:31:18,625 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 144 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:18,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1658 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:31:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-23 23:31:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 799. [2024-11-23 23:31:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 643 states have (on average 1.5614307931570761) internal successors, (1004), 643 states have internal predecessors, (1004), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:31:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1292 transitions. [2024-11-23 23:31:18,744 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1292 transitions. Word has length 300 [2024-11-23 23:31:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:18,744 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 1292 transitions. [2024-11-23 23:31:18,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:31:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1292 transitions. [2024-11-23 23:31:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-23 23:31:18,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:18,748 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:18,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 23:31:18,748 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:18,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash 105282031, now seen corresponding path program 1 times [2024-11-23 23:31:18,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:18,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395403135] [2024-11-23 23:31:18,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:18,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:31:18,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:18,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395403135] [2024-11-23 23:31:18,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395403135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:18,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:18,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:31:18,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977522980] [2024-11-23 23:31:18,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:18,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:31:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:18,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:31:18,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:18,896 INFO L87 Difference]: Start difference. First operand 799 states and 1292 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:31:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:19,110 INFO L93 Difference]: Finished difference Result 1721 states and 2781 transitions. [2024-11-23 23:31:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:31:19,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 301 [2024-11-23 23:31:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:19,117 INFO L225 Difference]: With dead ends: 1721 [2024-11-23 23:31:19,118 INFO L226 Difference]: Without dead ends: 1026 [2024-11-23 23:31:19,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:19,120 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 66 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:19,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 446 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:31:19,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-23 23:31:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 948. [2024-11-23 23:31:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 792 states have (on average 1.5909090909090908) internal successors, (1260), 792 states have internal predecessors, (1260), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:31:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1548 transitions. [2024-11-23 23:31:19,290 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1548 transitions. Word has length 301 [2024-11-23 23:31:19,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:19,291 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 1548 transitions. [2024-11-23 23:31:19,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:31:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1548 transitions. [2024-11-23 23:31:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-23 23:31:19,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:19,294 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:19,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 23:31:19,295 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:19,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1386554075, now seen corresponding path program 1 times [2024-11-23 23:31:19,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:19,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380826386] [2024-11-23 23:31:19,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:19,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:32:49,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:32:49,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380826386] [2024-11-23 23:32:49,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380826386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:32:49,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:32:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:32:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588008601] [2024-11-23 23:32:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:32:49,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:32:49,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:49,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:32:49,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:32:49,529 INFO L87 Difference]: Start difference. First operand 948 states and 1548 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:32:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:32:51,726 INFO L93 Difference]: Finished difference Result 1233 states and 2011 transitions. [2024-11-23 23:32:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:32:51,727 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 301 [2024-11-23 23:32:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:32:51,733 INFO L225 Difference]: With dead ends: 1233 [2024-11-23 23:32:51,734 INFO L226 Difference]: Without dead ends: 1231 [2024-11-23 23:32:51,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:32:51,735 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 186 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:32:51,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1964 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:32:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-23 23:32:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 948. [2024-11-23 23:32:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 792 states have (on average 1.5909090909090908) internal successors, (1260), 792 states have internal predecessors, (1260), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:32:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1548 transitions. [2024-11-23 23:32:51,821 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1548 transitions. Word has length 301 [2024-11-23 23:32:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:32:51,821 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 1548 transitions. [2024-11-23 23:32:51,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:32:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1548 transitions. [2024-11-23 23:32:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-23 23:32:51,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:32:51,823 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:32:51,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 23:32:51,824 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:32:51,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:32:51,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1917800846, now seen corresponding path program 1 times [2024-11-23 23:32:51,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:32:51,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374714867] [2024-11-23 23:32:51,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:51,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:32:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:03,931 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-23 23:34:03,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-23 23:34:03,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 23:34:03,932 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:584) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.postprocessInterpolant(NestedInterpolantsBuilder.java:472) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 50 more [2024-11-23 23:34:03,940 INFO L158 Benchmark]: Toolchain (without parser) took 695723.34ms. Allocated memory was 117.4MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 84.6MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-23 23:34:03,940 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:34:03,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.16ms. Allocated memory is still 117.4MB. Free memory was 84.6MB in the beginning and 67.4MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 23:34:03,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.59ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 62.3MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:34:03,940 INFO L158 Benchmark]: Boogie Preprocessor took 98.88ms. Allocated memory is still 117.4MB. Free memory was 62.3MB in the beginning and 55.6MB in the end (delta: 6.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:34:03,941 INFO L158 Benchmark]: RCFGBuilder took 900.94ms. Allocated memory is still 117.4MB. Free memory was 55.6MB in the beginning and 71.9MB in the end (delta: -16.2MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2024-11-23 23:34:03,941 INFO L158 Benchmark]: TraceAbstraction took 694097.00ms. Allocated memory was 117.4MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 71.3MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-23 23:34:03,947 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.16ms. Allocated memory is still 117.4MB. Free memory was 84.6MB in the beginning and 67.4MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.59ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 62.3MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 98.88ms. Allocated memory is still 117.4MB. Free memory was 62.3MB in the beginning and 55.6MB in the end (delta: 6.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 900.94ms. Allocated memory is still 117.4MB. Free memory was 55.6MB in the beginning and 71.9MB in the end (delta: -16.2MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * TraceAbstraction took 694097.00ms. Allocated memory was 117.4MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 71.3MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0b041aa2b39223b19922ade0fcc5fbdd940e679150ec973bead00d3f56ba2c8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:34:06,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:34:06,796 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-23 23:34:06,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:34:06,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:34:06,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:34:06,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:34:06,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:34:06,851 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:34:06,851 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:34:06,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:34:06,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:34:06,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:34:06,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:34:06,852 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:34:06,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:34:06,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:34:06,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:34:06,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:34:06,855 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:34:06,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:34:06,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:34:06,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:34:06,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:34:06,857 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 23:34:06,857 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 23:34:06,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:34:06,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:34:06,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:34:06,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:34:06,857 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_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b041aa2b39223b19922ade0fcc5fbdd940e679150ec973bead00d3f56ba2c8 [2024-11-23 23:34:07,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:34:07,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:34:07,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:34:07,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:34:07,209 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:34:07,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i [2024-11-23 23:34:10,238 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data/b4ca44e5c/b56e48f18b424640beb89fa863f45c00/FLAG40bb5f67a [2024-11-23 23:34:10,543 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:34:10,547 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i [2024-11-23 23:34:10,565 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data/b4ca44e5c/b56e48f18b424640beb89fa863f45c00/FLAG40bb5f67a [2024-11-23 23:34:10,593 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/data/b4ca44e5c/b56e48f18b424640beb89fa863f45c00 [2024-11-23 23:34:10,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:34:10,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:34:10,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:34:10,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:34:10,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:34:10,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:34:10" (1/1) ... [2024-11-23 23:34:10,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701437e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:10, skipping insertion in model container [2024-11-23 23:34:10,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:34:10" (1/1) ... [2024-11-23 23:34:10,643 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:34:10,849 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_601f5436-479d-4c6e-bad8-ded4ca30c185/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i[919,932] [2024-11-23 23:34:11,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:34:11,045 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:34:11,058 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_601f5436-479d-4c6e-bad8-ded4ca30c185/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i[919,932] [2024-11-23 23:34:11,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:34:11,134 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:34:11,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11 WrapperNode [2024-11-23 23:34:11,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:34:11,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:34:11,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:34:11,136 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:34:11,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,203 INFO L138 Inliner]: procedures = 27, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 250 [2024-11-23 23:34:11,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:34:11,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:34:11,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:34:11,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:34:11,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,247 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:34:11,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,262 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,271 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:34:11,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:34:11,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:34:11,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:34:11,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (1/1) ... [2024-11-23 23:34:11,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:34:11,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:34:11,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:34:11,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:34:11,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:34:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 23:34:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:34:11,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:34:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:34:11,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:34:11,495 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:34:11,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:34:13,095 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-23 23:34:13,095 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:34:13,120 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:34:13,121 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:34:13,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:34:13 BoogieIcfgContainer [2024-11-23 23:34:13,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:34:13,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:34:13,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:34:13,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:34:13,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:34:10" (1/3) ... [2024-11-23 23:34:13,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ea90f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:34:13, skipping insertion in model container [2024-11-23 23:34:13,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:11" (2/3) ... [2024-11-23 23:34:13,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ea90f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:34:13, skipping insertion in model container [2024-11-23 23:34:13,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:34:13" (3/3) ... [2024-11-23 23:34:13,135 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i [2024-11-23 23:34:13,154 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:34:13,156 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i that has 2 procedures, 115 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:34:13,228 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:34:13,249 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;@76448f60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:34:13,249 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:34:13,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 64 states have (on average 1.375) internal successors, (88), 65 states have internal predecessors, (88), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 23:34:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-23 23:34:13,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:13,278 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:13,278 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:13,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:13,285 INFO L85 PathProgramCache]: Analyzing trace with hash 162501905, now seen corresponding path program 1 times [2024-11-23 23:34:13,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:34:13,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157395491] [2024-11-23 23:34:13,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:13,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:13,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 23:34:13,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 23:34:13,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-23 23:34:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:13,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:34:13,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1678 proven. 0 refuted. 0 times theorem prover too weak. 2834 trivial. 0 not checked. [2024-11-23 23:34:14,078 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:34:14,081 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:34:14,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157395491] [2024-11-23 23:34:14,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157395491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:34:14,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:34:14,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:34:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948925278] [2024-11-23 23:34:14,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:14,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:34:14,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:34:14,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:34:14,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:34:14,128 INFO L87 Difference]: Start difference. First operand has 115 states, 64 states have (on average 1.375) internal successors, (88), 65 states have internal predecessors, (88), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:34:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:14,172 INFO L93 Difference]: Finished difference Result 223 states and 410 transitions. [2024-11-23 23:34:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:34:14,175 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 290 [2024-11-23 23:34:14,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:14,184 INFO L225 Difference]: With dead ends: 223 [2024-11-23 23:34:14,184 INFO L226 Difference]: Without dead ends: 111 [2024-11-23 23:34:14,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:34:14,193 INFO L435 NwaCegarLoop]: 177 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, 177 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 [2024-11-23 23:34:14,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:34:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-23 23:34:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-23 23:34:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 61 states have internal predecessors, (81), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 23:34:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 177 transitions. [2024-11-23 23:34:14,261 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 177 transitions. Word has length 290 [2024-11-23 23:34:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:14,262 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 177 transitions. [2024-11-23 23:34:14,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:34:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 177 transitions. [2024-11-23 23:34:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-23 23:34:14,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:14,270 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:14,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-23 23:34:14,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:14,471 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:14,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash 736856345, now seen corresponding path program 1 times [2024-11-23 23:34:14,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:34:14,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437531595] [2024-11-23 23:34:14,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:14,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:14,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 23:34:14,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 23:34:14,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-23 23:34:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:14,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:34:15,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 47 proven. 141 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-23 23:34:17,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:34:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2024-11-23 23:34:18,522 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:34:18,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437531595] [2024-11-23 23:34:18,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437531595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:34:18,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:34:18,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2024-11-23 23:34:18,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384819934] [2024-11-23 23:34:18,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:34:18,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:34:18,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:34:18,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:34:18,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:34:18,528 INFO L87 Difference]: Start difference. First operand 111 states and 177 transitions. Second operand has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2024-11-23 23:34:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:22,681 INFO L93 Difference]: Finished difference Result 449 states and 708 transitions. [2024-11-23 23:34:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 23:34:22,682 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) Word has length 290 [2024-11-23 23:34:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:22,689 INFO L225 Difference]: With dead ends: 449 [2024-11-23 23:34:22,689 INFO L226 Difference]: Without dead ends: 341 [2024-11-23 23:34:22,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2024-11-23 23:34:22,692 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 720 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:22,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 743 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-23 23:34:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-23 23:34:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 115. [2024-11-23 23:34:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 64 states have (on average 1.296875) internal successors, (83), 64 states have internal predecessors, (83), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 23:34:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 179 transitions. [2024-11-23 23:34:22,756 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 179 transitions. Word has length 290 [2024-11-23 23:34:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:22,757 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 179 transitions. [2024-11-23 23:34:22,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2024-11-23 23:34:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 179 transitions. [2024-11-23 23:34:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-23 23:34:22,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:22,763 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:22,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-23 23:34:22,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:22,964 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:22,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1257288361, now seen corresponding path program 1 times [2024-11-23 23:34:22,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:34:22,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911163766] [2024-11-23 23:34:22,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:22,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:22,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 23:34:22,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 23:34:22,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-23 23:34:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:23,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:34:23,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 47 proven. 141 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-23 23:34:26,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:34:27,639 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:34:27,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911163766] [2024-11-23 23:34:27,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911163766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:34:27,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1627807024] [2024-11-23 23:34:27,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:27,640 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:34:27,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:34:27,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:34:27,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-23 23:34:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:28,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:34:28,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:34:30,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:34:30,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1627807024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:34:30,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:34:30,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2024-11-23 23:34:30,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10791132] [2024-11-23 23:34:30,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:30,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:34:30,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:34:30,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:34:30,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:34:30,013 INFO L87 Difference]: Start difference. First operand 115 states and 179 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:34:30,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:30,945 INFO L93 Difference]: Finished difference Result 340 states and 532 transitions. [2024-11-23 23:34:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:34:30,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 290 [2024-11-23 23:34:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:30,953 INFO L225 Difference]: With dead ends: 340 [2024-11-23 23:34:30,953 INFO L226 Difference]: Without dead ends: 228 [2024-11-23 23:34:30,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:34:30,955 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 126 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:30,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 630 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:34:30,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-23 23:34:31,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 204. [2024-11-23 23:34:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 103 states have (on average 1.203883495145631) internal successors, (124), 103 states have internal predecessors, (124), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:34:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 316 transitions. [2024-11-23 23:34:31,046 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 316 transitions. Word has length 290 [2024-11-23 23:34:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:31,047 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 316 transitions. [2024-11-23 23:34:31,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:34:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 316 transitions. [2024-11-23 23:34:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-23 23:34:31,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:31,058 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:31,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-23 23:34:31,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-23 23:34:31,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:31,460 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:31,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash -236220007, now seen corresponding path program 1 times [2024-11-23 23:34:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:34:31,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619136473] [2024-11-23 23:34:31,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:31,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:31,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 23:34:31,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 23:34:31,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-23 23:34:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:31,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:34:31,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2024-11-23 23:34:32,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:34:32,521 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:34:32,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619136473] [2024-11-23 23:34:32,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619136473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:34:32,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1091142437] [2024-11-23 23:34:32,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:32,522 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:34:32,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:34:32,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:34:32,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-23 23:34:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:33,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:34:33,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2024-11-23 23:34:34,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:34:34,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1091142437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:34:34,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:34:34,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2024-11-23 23:34:34,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002370311] [2024-11-23 23:34:34,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:34:34,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:34:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:34:34,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:34:34,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:34:34,365 INFO L87 Difference]: Start difference. First operand 204 states and 316 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:34:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:35,931 INFO L93 Difference]: Finished difference Result 331 states and 507 transitions. [2024-11-23 23:34:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:34:35,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 290 [2024-11-23 23:34:35,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:35,935 INFO L225 Difference]: With dead ends: 331 [2024-11-23 23:34:35,935 INFO L226 Difference]: Without dead ends: 219 [2024-11-23 23:34:35,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:34:35,937 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 134 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:35,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 519 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:34:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-23 23:34:35,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 212. [2024-11-23 23:34:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 109 states have (on average 1.18348623853211) internal successors, (129), 109 states have internal predecessors, (129), 96 states have call successors, (96), 6 states have call predecessors, (96), 6 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:34:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 321 transitions. [2024-11-23 23:34:35,990 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 321 transitions. Word has length 290 [2024-11-23 23:34:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:35,991 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 321 transitions. [2024-11-23 23:34:35,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:34:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 321 transitions. [2024-11-23 23:34:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-23 23:34:35,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:35,996 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:36,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-23 23:34:36,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-23 23:34:36,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:34:36,397 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:36,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:36,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1429370760, now seen corresponding path program 1 times [2024-11-23 23:34:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:34:36,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252200889] [2024-11-23 23:34:36,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:36,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:36,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 23:34:36,403 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 23:34:36,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-23 23:34:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:36,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:34:36,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 897 proven. 126 refuted. 0 times theorem prover too weak. 3489 trivial. 0 not checked. [2024-11-23 23:34:37,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:34:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:34:37,712 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:34:37,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252200889] [2024-11-23 23:34:37,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252200889] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:34:37,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:34:37,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-23 23:34:37,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39363909] [2024-11-23 23:34:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:37,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:34:37,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:34:37,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:34:37,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:34:37,715 INFO L87 Difference]: Start difference. First operand 212 states and 321 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:34:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:37,859 INFO L93 Difference]: Finished difference Result 373 states and 561 transitions. [2024-11-23 23:34:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:34:37,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 291 [2024-11-23 23:34:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:37,863 INFO L225 Difference]: With dead ends: 373 [2024-11-23 23:34:37,863 INFO L226 Difference]: Without dead ends: 257 [2024-11-23 23:34:37,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:34:37,865 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 46 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:37,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 511 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:34:37,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-23 23:34:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 254. [2024-11-23 23:34:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 145 states have (on average 1.2344827586206897) internal successors, (179), 146 states have internal predecessors, (179), 100 states have call successors, (100), 8 states have call predecessors, (100), 8 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:34:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 379 transitions. [2024-11-23 23:34:37,956 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 379 transitions. Word has length 291 [2024-11-23 23:34:37,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:37,957 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 379 transitions. [2024-11-23 23:34:37,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:34:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 379 transitions. [2024-11-23 23:34:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-23 23:34:37,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:37,962 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:37,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:34:38,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:38,163 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:38,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:38,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1171205322, now seen corresponding path program 1 times [2024-11-23 23:34:38,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:34:38,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761897259] [2024-11-23 23:34:38,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:38,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-23 23:34:38,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-23 23:34:38,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-23 23:34:38,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601f5436-479d-4c6e-bad8-ded4ca30c185/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-23 23:34:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:38,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 23:34:38,628 INFO L279 TraceCheckSpWp]: Computing forward predicates...