./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash edb6f856db72a43ad08c83ff0e1ee56d288f58300ccdf5a7b1b400a926b63cbe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:38:27,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:38:27,167 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:38:27,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:38:27,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:38:27,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:38:27,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:38:27,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:38:27,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:38:27,205 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:38:27,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:38:27,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:38:27,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:38:27,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:38:27,206 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:38:27,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:38:27,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:38:27,206 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:38:27,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:38:27,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:38:27,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:38:27,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:38:27,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:38:27,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:38:27,207 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:38:27,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:38:27,207 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:38:27,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:38:27,208 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:38:27,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:38:27,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:38:27,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:38:27,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:27,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:38:27,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:38:27,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:38:27,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:38:27,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:27,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:38:27,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:38:27,209 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:38:27,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:38:27,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:38:27,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:38:27,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:38:27,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:38:27,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:38:27,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:38:27,210 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_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edb6f856db72a43ad08c83ff0e1ee56d288f58300ccdf5a7b1b400a926b63cbe [2024-11-27 23:38:27,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:38:27,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:38:27,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:38:27,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:38:27,590 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:38:27,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem11_label54.c [2024-11-27 23:38:30,733 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/data/b3719b4a8/aef999aedb90476fa9f85d0ac4e4e65c/FLAG08f88d6a7 [2024-11-27 23:38:31,218 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:38:31,219 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/sv-benchmarks/c/eca-rers2012/Problem11_label54.c [2024-11-27 23:38:31,240 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/data/b3719b4a8/aef999aedb90476fa9f85d0ac4e4e65c/FLAG08f88d6a7 [2024-11-27 23:38:31,266 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/data/b3719b4a8/aef999aedb90476fa9f85d0ac4e4e65c [2024-11-27 23:38:31,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:38:31,272 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:38:31,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:31,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:38:31,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:38:31,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:31,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4522e481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31, skipping insertion in model container [2024-11-27 23:38:31,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:31,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:38:31,616 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_68ae6e90-99f2-4f2f-9f55-25e748d46611/sv-benchmarks/c/eca-rers2012/Problem11_label54.c[5423,5436] [2024-11-27 23:38:31,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:31,930 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:38:31,966 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_68ae6e90-99f2-4f2f-9f55-25e748d46611/sv-benchmarks/c/eca-rers2012/Problem11_label54.c[5423,5436] [2024-11-27 23:38:32,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:32,188 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:38:32,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32 WrapperNode [2024-11-27 23:38:32,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:32,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:32,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:38:32,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:38:32,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,411 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2024-11-27 23:38:32,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:32,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:38:32,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:38:32,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:38:32,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,512 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:38:32,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,579 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:38:32,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:38:32,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:38:32,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:38:32,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:32,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:32,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:38:32,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:38:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:38:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:38:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:38:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:38:32,822 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:38:32,825 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:38:35,170 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-27 23:38:35,171 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:38:35,201 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:38:35,203 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:38:35,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:35 BoogieIcfgContainer [2024-11-27 23:38:35,203 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:38:35,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:38:35,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:38:35,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:38:35,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:38:31" (1/3) ... [2024-11-27 23:38:35,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f188e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:35, skipping insertion in model container [2024-11-27 23:38:35,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (2/3) ... [2024-11-27 23:38:35,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f188e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:35, skipping insertion in model container [2024-11-27 23:38:35,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:35" (3/3) ... [2024-11-27 23:38:35,217 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem11_label54.c [2024-11-27 23:38:35,235 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:38:35,238 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem11_label54.c that has 1 procedures, 283 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:38:35,328 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:38:35,347 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;@274aa45c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:38:35,347 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:38:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:35,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 23:38:35,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:35,364 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:35,365 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:35,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2088660649, now seen corresponding path program 1 times [2024-11-27 23:38:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070680053] [2024-11-27 23:38:35,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:35,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:35,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:35,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070680053] [2024-11-27 23:38:35,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070680053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:35,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:35,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:38:35,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545331304] [2024-11-27 23:38:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:35,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:35,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:35,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:35,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:35,899 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:37,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:37,564 INFO L93 Difference]: Finished difference Result 763 states and 1352 transitions. [2024-11-27 23:38:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:37,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-27 23:38:37,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:37,583 INFO L225 Difference]: With dead ends: 763 [2024-11-27 23:38:37,583 INFO L226 Difference]: Without dead ends: 416 [2024-11-27 23:38:37,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:37,593 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 236 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:37,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 89 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:38:37,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-27 23:38:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 408. [2024-11-27 23:38:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.6142506142506143) internal successors, (657), 407 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 657 transitions. [2024-11-27 23:38:37,660 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 657 transitions. Word has length 37 [2024-11-27 23:38:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:37,661 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 657 transitions. [2024-11-27 23:38:37,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 657 transitions. [2024-11-27 23:38:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 23:38:37,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:37,667 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:37,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:38:37,667 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:37,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1296179654, now seen corresponding path program 1 times [2024-11-27 23:38:37,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:37,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897472186] [2024-11-27 23:38:37,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:37,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897472186] [2024-11-27 23:38:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897472186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:38,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:38:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250631257] [2024-11-27 23:38:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:38,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:38,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:38,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:38,084 INFO L87 Difference]: Start difference. First operand 408 states and 657 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:39,273 INFO L93 Difference]: Finished difference Result 1191 states and 1930 transitions. [2024-11-27 23:38:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-27 23:38:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:39,279 INFO L225 Difference]: With dead ends: 1191 [2024-11-27 23:38:39,279 INFO L226 Difference]: Without dead ends: 785 [2024-11-27 23:38:39,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:39,282 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 141 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:39,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 152 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:38:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2024-11-27 23:38:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 783. [2024-11-27 23:38:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 1.438618925831202) internal successors, (1125), 782 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1125 transitions. [2024-11-27 23:38:39,339 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1125 transitions. Word has length 102 [2024-11-27 23:38:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:39,340 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1125 transitions. [2024-11-27 23:38:39,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1125 transitions. [2024-11-27 23:38:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-27 23:38:39,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:39,345 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:39,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:38:39,346 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:39,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1017074320, now seen corresponding path program 1 times [2024-11-27 23:38:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:39,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007269329] [2024-11-27 23:38:39,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:39,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007269329] [2024-11-27 23:38:39,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007269329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:39,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:38:39,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177677370] [2024-11-27 23:38:39,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:39,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:39,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:39,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:39,572 INFO L87 Difference]: Start difference. First operand 783 states and 1125 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:40,667 INFO L93 Difference]: Finished difference Result 1948 states and 2801 transitions. [2024-11-27 23:38:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:40,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-27 23:38:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:40,673 INFO L225 Difference]: With dead ends: 1948 [2024-11-27 23:38:40,673 INFO L226 Difference]: Without dead ends: 1167 [2024-11-27 23:38:40,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:40,675 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 144 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:40,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 116 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:38:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2024-11-27 23:38:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1154. [2024-11-27 23:38:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.3391153512575888) internal successors, (1544), 1153 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1544 transitions. [2024-11-27 23:38:40,717 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1544 transitions. Word has length 105 [2024-11-27 23:38:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:40,718 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1544 transitions. [2024-11-27 23:38:40,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1544 transitions. [2024-11-27 23:38:40,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-27 23:38:40,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:40,720 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:40,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:38:40,720 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:40,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash -166569456, now seen corresponding path program 1 times [2024-11-27 23:38:40,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:40,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239097336] [2024-11-27 23:38:40,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:41,162 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:41,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:41,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239097336] [2024-11-27 23:38:41,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239097336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:41,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:41,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:38:41,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280396347] [2024-11-27 23:38:41,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:41,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:41,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:41,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:41,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:41,164 INFO L87 Difference]: Start difference. First operand 1154 states and 1544 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:42,241 INFO L93 Difference]: Finished difference Result 2676 states and 3529 transitions. [2024-11-27 23:38:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:42,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-27 23:38:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:42,248 INFO L225 Difference]: With dead ends: 2676 [2024-11-27 23:38:42,248 INFO L226 Difference]: Without dead ends: 1524 [2024-11-27 23:38:42,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:42,252 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:42,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 189 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:38:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2024-11-27 23:38:42,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1523. [2024-11-27 23:38:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.268725361366623) internal successors, (1931), 1522 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1931 transitions. [2024-11-27 23:38:42,308 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1931 transitions. Word has length 106 [2024-11-27 23:38:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:42,309 INFO L471 AbstractCegarLoop]: Abstraction has 1523 states and 1931 transitions. [2024-11-27 23:38:42,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1931 transitions. [2024-11-27 23:38:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-27 23:38:42,311 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:42,311 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:42,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:38:42,315 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:42,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2070966061, now seen corresponding path program 1 times [2024-11-27 23:38:42,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:42,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322785237] [2024-11-27 23:38:42,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:42,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:42,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:42,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322785237] [2024-11-27 23:38:42,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322785237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:42,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:42,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:38:42,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047930004] [2024-11-27 23:38:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:42,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:42,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:42,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:42,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:42,588 INFO L87 Difference]: Start difference. First operand 1523 states and 1931 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:43,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:43,573 INFO L93 Difference]: Finished difference Result 3968 states and 5151 transitions. [2024-11-27 23:38:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:43,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-11-27 23:38:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:43,583 INFO L225 Difference]: With dead ends: 3968 [2024-11-27 23:38:43,583 INFO L226 Difference]: Without dead ends: 2631 [2024-11-27 23:38:43,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:43,586 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:43,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:38:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2024-11-27 23:38:43,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2447. [2024-11-27 23:38:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2446 states have (on average 1.2236304170073589) internal successors, (2993), 2446 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 2993 transitions. [2024-11-27 23:38:43,641 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 2993 transitions. Word has length 164 [2024-11-27 23:38:43,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:43,641 INFO L471 AbstractCegarLoop]: Abstraction has 2447 states and 2993 transitions. [2024-11-27 23:38:43,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 2993 transitions. [2024-11-27 23:38:43,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-27 23:38:43,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:43,645 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:43,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:38:43,645 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:43,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash -558806157, now seen corresponding path program 1 times [2024-11-27 23:38:43,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:43,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602665347] [2024-11-27 23:38:43,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:43,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 23:38:43,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:43,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602665347] [2024-11-27 23:38:43,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602665347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:43,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:43,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:38:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437969049] [2024-11-27 23:38:43,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:43,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:43,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:43,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:43,917 INFO L87 Difference]: Start difference. First operand 2447 states and 2993 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:44,864 INFO L93 Difference]: Finished difference Result 5266 states and 6463 transitions. [2024-11-27 23:38:44,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:44,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-11-27 23:38:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:44,878 INFO L225 Difference]: With dead ends: 5266 [2024-11-27 23:38:44,878 INFO L226 Difference]: Without dead ends: 3005 [2024-11-27 23:38:44,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:44,886 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 75 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:44,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 153 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:38:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2024-11-27 23:38:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2820. [2024-11-27 23:38:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2819 states have (on average 1.2220645619013835) internal successors, (3445), 2819 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3445 transitions. [2024-11-27 23:38:44,960 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3445 transitions. Word has length 180 [2024-11-27 23:38:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:44,961 INFO L471 AbstractCegarLoop]: Abstraction has 2820 states and 3445 transitions. [2024-11-27 23:38:44,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3445 transitions. [2024-11-27 23:38:44,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 23:38:44,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:44,966 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:44,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:38:44,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:44,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1961217037, now seen corresponding path program 1 times [2024-11-27 23:38:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:44,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999135123] [2024-11-27 23:38:44,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:44,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:45,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:45,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999135123] [2024-11-27 23:38:45,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999135123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:45,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:45,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:45,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510005798] [2024-11-27 23:38:45,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:45,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:45,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:45,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:45,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:45,322 INFO L87 Difference]: Start difference. First operand 2820 states and 3445 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:46,453 INFO L93 Difference]: Finished difference Result 6567 states and 8101 transitions. [2024-11-27 23:38:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:46,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2024-11-27 23:38:46,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:46,469 INFO L225 Difference]: With dead ends: 6567 [2024-11-27 23:38:46,469 INFO L226 Difference]: Without dead ends: 3933 [2024-11-27 23:38:46,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:46,473 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 135 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:46,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 332 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:38:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2024-11-27 23:38:46,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 3556. [2024-11-27 23:38:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 1.2115330520393812) internal successors, (4307), 3555 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:46,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 4307 transitions. [2024-11-27 23:38:46,556 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 4307 transitions. Word has length 217 [2024-11-27 23:38:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:46,557 INFO L471 AbstractCegarLoop]: Abstraction has 3556 states and 4307 transitions. [2024-11-27 23:38:46,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 4307 transitions. [2024-11-27 23:38:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-27 23:38:46,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:46,563 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:46,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:38:46,563 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:46,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash 629777389, now seen corresponding path program 1 times [2024-11-27 23:38:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:46,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199828052] [2024-11-27 23:38:46,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:46,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-27 23:38:46,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:46,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199828052] [2024-11-27 23:38:46,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199828052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:46,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:46,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041742246] [2024-11-27 23:38:46,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:46,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:46,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:46,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:46,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:46,924 INFO L87 Difference]: Start difference. First operand 3556 states and 4307 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:48,065 INFO L93 Difference]: Finished difference Result 9521 states and 11627 transitions. [2024-11-27 23:38:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:48,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-11-27 23:38:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:48,083 INFO L225 Difference]: With dead ends: 9521 [2024-11-27 23:38:48,084 INFO L226 Difference]: Without dead ends: 5967 [2024-11-27 23:38:48,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:48,088 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 189 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:48,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 332 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:38:48,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5967 states. [2024-11-27 23:38:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5967 to 5231. [2024-11-27 23:38:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 1.2061185468451243) internal successors, (6308), 5230 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 6308 transitions. [2024-11-27 23:38:48,219 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 6308 transitions. Word has length 218 [2024-11-27 23:38:48,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:48,220 INFO L471 AbstractCegarLoop]: Abstraction has 5231 states and 6308 transitions. [2024-11-27 23:38:48,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:48,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 6308 transitions. [2024-11-27 23:38:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-27 23:38:48,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:48,225 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:48,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:38:48,225 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:48,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 216235323, now seen corresponding path program 1 times [2024-11-27 23:38:48,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:48,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630022321] [2024-11-27 23:38:48,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:48,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630022321] [2024-11-27 23:38:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630022321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215528785] [2024-11-27 23:38:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:48,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:48,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:48,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:48,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:48,592 INFO L87 Difference]: Start difference. First operand 5231 states and 6308 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:49,685 INFO L93 Difference]: Finished difference Result 10457 states and 12611 transitions. [2024-11-27 23:38:49,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:49,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2024-11-27 23:38:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:49,702 INFO L225 Difference]: With dead ends: 10457 [2024-11-27 23:38:49,702 INFO L226 Difference]: Without dead ends: 5228 [2024-11-27 23:38:49,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:49,709 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 142 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:49,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 304 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:38:49,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2024-11-27 23:38:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 5228. [2024-11-27 23:38:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 1.178687583700019) internal successors, (6161), 5227 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 6161 transitions. [2024-11-27 23:38:49,811 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 6161 transitions. Word has length 255 [2024-11-27 23:38:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:49,811 INFO L471 AbstractCegarLoop]: Abstraction has 5228 states and 6161 transitions. [2024-11-27 23:38:49,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 6161 transitions. [2024-11-27 23:38:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-27 23:38:49,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:49,819 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:49,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:38:49,819 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:49,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2143692386, now seen corresponding path program 1 times [2024-11-27 23:38:49,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:49,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089622356] [2024-11-27 23:38:49,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:49,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-27 23:38:50,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:50,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089622356] [2024-11-27 23:38:50,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089622356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:50,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:50,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612034586] [2024-11-27 23:38:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:50,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:50,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:50,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:50,243 INFO L87 Difference]: Start difference. First operand 5228 states and 6161 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:51,203 INFO L93 Difference]: Finished difference Result 11195 states and 13196 transitions. [2024-11-27 23:38:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:51,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2024-11-27 23:38:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:51,220 INFO L225 Difference]: With dead ends: 11195 [2024-11-27 23:38:51,220 INFO L226 Difference]: Without dead ends: 5969 [2024-11-27 23:38:51,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:51,227 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 185 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:51,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 148 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:38:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5969 states. [2024-11-27 23:38:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5969 to 5228. [2024-11-27 23:38:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 1.178687583700019) internal successors, (6161), 5227 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 6161 transitions. [2024-11-27 23:38:51,347 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 6161 transitions. Word has length 269 [2024-11-27 23:38:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:51,348 INFO L471 AbstractCegarLoop]: Abstraction has 5228 states and 6161 transitions. [2024-11-27 23:38:51,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 6161 transitions. [2024-11-27 23:38:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:38:51,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:51,354 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:51,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:38:51,356 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:51,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:51,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1892161860, now seen corresponding path program 1 times [2024-11-27 23:38:51,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:51,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063604453] [2024-11-27 23:38:51,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:51,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-27 23:38:51,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:51,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063604453] [2024-11-27 23:38:51,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063604453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:51,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:51,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:51,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586137584] [2024-11-27 23:38:51,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:51,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:51,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:51,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:51,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:51,737 INFO L87 Difference]: Start difference. First operand 5228 states and 6161 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:52,986 INFO L93 Difference]: Finished difference Result 12849 states and 15240 transitions. [2024-11-27 23:38:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:52,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2024-11-27 23:38:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:53,005 INFO L225 Difference]: With dead ends: 12849 [2024-11-27 23:38:53,005 INFO L226 Difference]: Without dead ends: 7623 [2024-11-27 23:38:53,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:53,010 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 197 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:53,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 71 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:38:53,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7623 states. [2024-11-27 23:38:53,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7623 to 7252. [2024-11-27 23:38:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7252 states, 7251 states have (on average 1.1842504482140395) internal successors, (8587), 7251 states have internal predecessors, (8587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 8587 transitions. [2024-11-27 23:38:53,163 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 8587 transitions. Word has length 272 [2024-11-27 23:38:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:53,164 INFO L471 AbstractCegarLoop]: Abstraction has 7252 states and 8587 transitions. [2024-11-27 23:38:53,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 8587 transitions. [2024-11-27 23:38:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-27 23:38:53,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:53,174 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:53,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:38:53,175 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:53,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:53,175 INFO L85 PathProgramCache]: Analyzing trace with hash -218760648, now seen corresponding path program 1 times [2024-11-27 23:38:53,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:53,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571408053] [2024-11-27 23:38:53,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:53,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-27 23:38:53,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:53,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571408053] [2024-11-27 23:38:53,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571408053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:53,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:53,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:53,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997455083] [2024-11-27 23:38:53,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:53,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:53,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:53,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:53,464 INFO L87 Difference]: Start difference. First operand 7252 states and 8587 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:54,490 INFO L93 Difference]: Finished difference Result 15789 states and 18676 transitions. [2024-11-27 23:38:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:54,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-11-27 23:38:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:54,509 INFO L225 Difference]: With dead ends: 15789 [2024-11-27 23:38:54,509 INFO L226 Difference]: Without dead ends: 8539 [2024-11-27 23:38:54,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:54,516 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 185 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:54,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 146 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:38:54,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2024-11-27 23:38:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 6143. [2024-11-27 23:38:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6143 states, 6142 states have (on average 1.1859329208726799) internal successors, (7284), 6142 states have internal predecessors, (7284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 7284 transitions. [2024-11-27 23:38:54,636 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 7284 transitions. Word has length 310 [2024-11-27 23:38:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:54,637 INFO L471 AbstractCegarLoop]: Abstraction has 6143 states and 7284 transitions. [2024-11-27 23:38:54,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 7284 transitions. [2024-11-27 23:38:54,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-27 23:38:54,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:54,645 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:54,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:38:54,645 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:54,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:54,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1789936803, now seen corresponding path program 1 times [2024-11-27 23:38:54,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:54,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927188080] [2024-11-27 23:38:54,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:54,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-27 23:38:55,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:55,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927188080] [2024-11-27 23:38:55,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927188080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:55,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:55,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:55,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071595164] [2024-11-27 23:38:55,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:55,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:38:55,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:55,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:38:55,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:55,297 INFO L87 Difference]: Start difference. First operand 6143 states and 7284 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:56,504 INFO L93 Difference]: Finished difference Result 14510 states and 17070 transitions. [2024-11-27 23:38:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:38:56,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2024-11-27 23:38:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:56,522 INFO L225 Difference]: With dead ends: 14510 [2024-11-27 23:38:56,523 INFO L226 Difference]: Without dead ends: 8355 [2024-11-27 23:38:56,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:56,529 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 71 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:56,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 162 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:38:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8355 states. [2024-11-27 23:38:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8355 to 8170. [2024-11-27 23:38:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8170 states, 8169 states have (on average 1.1726037458685274) internal successors, (9579), 8169 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8170 states to 8170 states and 9579 transitions. [2024-11-27 23:38:56,649 INFO L78 Accepts]: Start accepts. Automaton has 8170 states and 9579 transitions. Word has length 320 [2024-11-27 23:38:56,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:56,650 INFO L471 AbstractCegarLoop]: Abstraction has 8170 states and 9579 transitions. [2024-11-27 23:38:56,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:56,651 INFO L276 IsEmpty]: Start isEmpty. Operand 8170 states and 9579 transitions. [2024-11-27 23:38:56,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-27 23:38:56,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:56,665 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:56,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:38:56,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:56,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1148105623, now seen corresponding path program 1 times [2024-11-27 23:38:56,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:56,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939922076] [2024-11-27 23:38:56,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:56,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-27 23:38:57,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:57,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939922076] [2024-11-27 23:38:57,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939922076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:57,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:57,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:38:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049704278] [2024-11-27 23:38:57,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:57,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:38:57,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:57,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:38:57,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:57,261 INFO L87 Difference]: Start difference. First operand 8170 states and 9579 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:58,990 INFO L93 Difference]: Finished difference Result 21877 states and 25680 transitions. [2024-11-27 23:38:58,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:38:58,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 394 [2024-11-27 23:38:58,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:59,021 INFO L225 Difference]: With dead ends: 21877 [2024-11-27 23:38:59,021 INFO L226 Difference]: Without dead ends: 14077 [2024-11-27 23:38:59,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:59,029 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 294 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:59,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 86 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:38:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14077 states. [2024-11-27 23:38:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14077 to 12973. [2024-11-27 23:38:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12973 states, 12972 states have (on average 1.1669750231267344) internal successors, (15138), 12972 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12973 states to 12973 states and 15138 transitions. [2024-11-27 23:38:59,224 INFO L78 Accepts]: Start accepts. Automaton has 12973 states and 15138 transitions. Word has length 394 [2024-11-27 23:38:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:59,225 INFO L471 AbstractCegarLoop]: Abstraction has 12973 states and 15138 transitions. [2024-11-27 23:38:59,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:38:59,225 INFO L276 IsEmpty]: Start isEmpty. Operand 12973 states and 15138 transitions. [2024-11-27 23:38:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-27 23:38:59,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:59,245 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:59,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:38:59,246 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:59,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:59,247 INFO L85 PathProgramCache]: Analyzing trace with hash 917869103, now seen corresponding path program 1 times [2024-11-27 23:38:59,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:59,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959690125] [2024-11-27 23:38:59,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:59,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 23:38:59,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959690125] [2024-11-27 23:38:59,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959690125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:59,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:59,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:59,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818666857] [2024-11-27 23:38:59,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:59,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:38:59,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:59,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:38:59,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:59,684 INFO L87 Difference]: Start difference. First operand 12973 states and 15138 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:01,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:01,133 INFO L93 Difference]: Finished difference Result 32968 states and 38384 transitions. [2024-11-27 23:39:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:39:01,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 447 [2024-11-27 23:39:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:01,159 INFO L225 Difference]: With dead ends: 32968 [2024-11-27 23:39:01,159 INFO L226 Difference]: Without dead ends: 20365 [2024-11-27 23:39:01,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:01,172 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 238 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:01,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 76 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 23:39:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20365 states. [2024-11-27 23:39:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20365 to 17777. [2024-11-27 23:39:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17777 states, 17776 states have (on average 1.161284878487849) internal successors, (20643), 17776 states have internal predecessors, (20643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17777 states to 17777 states and 20643 transitions. [2024-11-27 23:39:01,519 INFO L78 Accepts]: Start accepts. Automaton has 17777 states and 20643 transitions. Word has length 447 [2024-11-27 23:39:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:01,520 INFO L471 AbstractCegarLoop]: Abstraction has 17777 states and 20643 transitions. [2024-11-27 23:39:01,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 17777 states and 20643 transitions. [2024-11-27 23:39:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-27 23:39:01,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:01,538 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:01,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:39:01,538 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:01,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash -395850802, now seen corresponding path program 1 times [2024-11-27 23:39:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:01,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016905] [2024-11-27 23:39:01,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:01,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-11-27 23:39:01,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:01,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016905] [2024-11-27 23:39:01,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:01,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:01,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:39:01,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304023483] [2024-11-27 23:39:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:01,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:39:01,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:01,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:39:01,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:01,945 INFO L87 Difference]: Start difference. First operand 17777 states and 20643 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:02,948 INFO L93 Difference]: Finished difference Result 34442 states and 40071 transitions. [2024-11-27 23:39:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:39:02,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2024-11-27 23:39:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:02,979 INFO L225 Difference]: With dead ends: 34442 [2024-11-27 23:39:02,979 INFO L226 Difference]: Without dead ends: 17035 [2024-11-27 23:39:02,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:02,994 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 67 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:02,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 311 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:39:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17035 states. [2024-11-27 23:39:03,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17035 to 12601. [2024-11-27 23:39:03,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12601 states, 12600 states have (on average 1.1617460317460317) internal successors, (14638), 12600 states have internal predecessors, (14638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12601 states to 12601 states and 14638 transitions. [2024-11-27 23:39:03,241 INFO L78 Accepts]: Start accepts. Automaton has 12601 states and 14638 transitions. Word has length 514 [2024-11-27 23:39:03,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:03,243 INFO L471 AbstractCegarLoop]: Abstraction has 12601 states and 14638 transitions. [2024-11-27 23:39:03,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 12601 states and 14638 transitions. [2024-11-27 23:39:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-27 23:39:03,257 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:03,257 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:03,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:39:03,258 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:03,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:03,259 INFO L85 PathProgramCache]: Analyzing trace with hash -584826003, now seen corresponding path program 1 times [2024-11-27 23:39:03,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:03,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500582784] [2024-11-27 23:39:03,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:03,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 559 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-27 23:39:03,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500582784] [2024-11-27 23:39:03,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500582784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:03,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:03,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:39:03,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016019033] [2024-11-27 23:39:03,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:03,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:39:03,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:03,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:39:03,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:03,990 INFO L87 Difference]: Start difference. First operand 12601 states and 14638 transitions. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:05,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:05,566 INFO L93 Difference]: Finished difference Result 28899 states and 33610 transitions. [2024-11-27 23:39:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:39:05,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 535 [2024-11-27 23:39:05,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:05,581 INFO L225 Difference]: With dead ends: 28899 [2024-11-27 23:39:05,581 INFO L226 Difference]: Without dead ends: 16668 [2024-11-27 23:39:05,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:05,587 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 298 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:05,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 85 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:39:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16668 states. [2024-11-27 23:39:05,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16668 to 12049. [2024-11-27 23:39:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12049 states, 12048 states have (on average 1.1661686586985391) internal successors, (14050), 12048 states have internal predecessors, (14050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12049 states to 12049 states and 14050 transitions. [2024-11-27 23:39:05,756 INFO L78 Accepts]: Start accepts. Automaton has 12049 states and 14050 transitions. Word has length 535 [2024-11-27 23:39:05,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:05,757 INFO L471 AbstractCegarLoop]: Abstraction has 12049 states and 14050 transitions. [2024-11-27 23:39:05,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:05,758 INFO L276 IsEmpty]: Start isEmpty. Operand 12049 states and 14050 transitions. [2024-11-27 23:39:05,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-11-27 23:39:05,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:05,770 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:05,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:39:05,770 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:05,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash -861206840, now seen corresponding path program 1 times [2024-11-27 23:39:05,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:05,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587125923] [2024-11-27 23:39:05,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:05,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-27 23:39:06,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:06,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587125923] [2024-11-27 23:39:06,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587125923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:06,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:06,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:39:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973718195] [2024-11-27 23:39:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:06,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:39:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:06,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:39:06,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:06,794 INFO L87 Difference]: Start difference. First operand 12049 states and 14050 transitions. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:08,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:08,557 INFO L93 Difference]: Finished difference Result 30746 states and 35969 transitions. [2024-11-27 23:39:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:39:08,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 561 [2024-11-27 23:39:08,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:08,583 INFO L225 Difference]: With dead ends: 30746 [2024-11-27 23:39:08,583 INFO L226 Difference]: Without dead ends: 19067 [2024-11-27 23:39:08,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:08,593 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 185 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:08,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 86 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:39:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19067 states. [2024-11-27 23:39:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19067 to 14453. [2024-11-27 23:39:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14453 states, 14452 states have (on average 1.17153335178522) internal successors, (16931), 14452 states have internal predecessors, (16931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14453 states to 14453 states and 16931 transitions. [2024-11-27 23:39:08,947 INFO L78 Accepts]: Start accepts. Automaton has 14453 states and 16931 transitions. Word has length 561 [2024-11-27 23:39:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:08,948 INFO L471 AbstractCegarLoop]: Abstraction has 14453 states and 16931 transitions. [2024-11-27 23:39:08,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 14453 states and 16931 transitions. [2024-11-27 23:39:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2024-11-27 23:39:08,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:08,975 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:08,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:39:08,976 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:08,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:08,977 INFO L85 PathProgramCache]: Analyzing trace with hash 802140522, now seen corresponding path program 1 times [2024-11-27 23:39:08,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:08,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968010337] [2024-11-27 23:39:08,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:08,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-27 23:39:09,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:09,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968010337] [2024-11-27 23:39:09,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968010337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:09,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:09,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:39:09,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538058911] [2024-11-27 23:39:09,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:09,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:39:09,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:09,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:39:09,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:09,436 INFO L87 Difference]: Start difference. First operand 14453 states and 16931 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:09,965 INFO L93 Difference]: Finished difference Result 28527 states and 33465 transitions. [2024-11-27 23:39:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:39:09,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 602 [2024-11-27 23:39:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:09,982 INFO L225 Difference]: With dead ends: 28527 [2024-11-27 23:39:09,982 INFO L226 Difference]: Without dead ends: 14444 [2024-11-27 23:39:09,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:09,992 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:09,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 39 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:39:10,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14444 states. [2024-11-27 23:39:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14444 to 14440. [2024-11-27 23:39:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14440 states, 14439 states have (on average 1.1708567075282221) internal successors, (16906), 14439 states have internal predecessors, (16906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14440 states to 14440 states and 16906 transitions. [2024-11-27 23:39:10,241 INFO L78 Accepts]: Start accepts. Automaton has 14440 states and 16906 transitions. Word has length 602 [2024-11-27 23:39:10,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:10,242 INFO L471 AbstractCegarLoop]: Abstraction has 14440 states and 16906 transitions. [2024-11-27 23:39:10,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 14440 states and 16906 transitions. [2024-11-27 23:39:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2024-11-27 23:39:10,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:10,256 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:10,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:39:10,257 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:10,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:10,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1745204086, now seen corresponding path program 1 times [2024-11-27 23:39:10,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:10,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623934594] [2024-11-27 23:39:10,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:10,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2024-11-27 23:39:10,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:10,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623934594] [2024-11-27 23:39:10,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623934594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:10,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:10,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:39:10,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299989396] [2024-11-27 23:39:10,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:10,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:39:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:10,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:39:10,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:10,818 INFO L87 Difference]: Start difference. First operand 14440 states and 16906 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:11,869 INFO L93 Difference]: Finished difference Result 30547 states and 35892 transitions. [2024-11-27 23:39:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:39:11,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 622 [2024-11-27 23:39:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:11,884 INFO L225 Difference]: With dead ends: 30547 [2024-11-27 23:39:11,884 INFO L226 Difference]: Without dead ends: 16291 [2024-11-27 23:39:11,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:11,892 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 34 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:11,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 370 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:39:11,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16291 states. [2024-11-27 23:39:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16291 to 15172. [2024-11-27 23:39:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15172 states, 15171 states have (on average 1.139147056884846) internal successors, (17282), 15171 states have internal predecessors, (17282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 17282 transitions. [2024-11-27 23:39:12,116 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 17282 transitions. Word has length 622 [2024-11-27 23:39:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:12,117 INFO L471 AbstractCegarLoop]: Abstraction has 15172 states and 17282 transitions. [2024-11-27 23:39:12,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 17282 transitions. [2024-11-27 23:39:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2024-11-27 23:39:12,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:12,126 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:12,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:39:12,126 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:12,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1165858962, now seen corresponding path program 1 times [2024-11-27 23:39:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:12,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770032206] [2024-11-27 23:39:12,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:12,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 621 proven. 154 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-27 23:39:12,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:12,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770032206] [2024-11-27 23:39:12,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770032206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:12,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171886305] [2024-11-27 23:39:12,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:12,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:12,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:12,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:12,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:39:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:13,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:39:13,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 621 proven. 154 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-27 23:39:15,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 621 proven. 154 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-27 23:39:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171886305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:17,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:17,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-27 23:39:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666960658] [2024-11-27 23:39:17,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:17,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:39:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:17,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:39:17,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:39:17,883 INFO L87 Difference]: Start difference. First operand 15172 states and 17282 transitions. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:19,743 INFO L93 Difference]: Finished difference Result 33219 states and 37863 transitions. [2024-11-27 23:39:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:39:19,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 626 [2024-11-27 23:39:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:19,758 INFO L225 Difference]: With dead ends: 33219 [2024-11-27 23:39:19,758 INFO L226 Difference]: Without dead ends: 18049 [2024-11-27 23:39:19,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:39:19,766 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 470 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:19,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 61 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 23:39:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18049 states. [2024-11-27 23:39:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18049 to 15157. [2024-11-27 23:39:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15157 states, 15156 states have (on average 1.1211401425178147) internal successors, (16992), 15156 states have internal predecessors, (16992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15157 states to 15157 states and 16992 transitions. [2024-11-27 23:39:19,944 INFO L78 Accepts]: Start accepts. Automaton has 15157 states and 16992 transitions. Word has length 626 [2024-11-27 23:39:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:19,945 INFO L471 AbstractCegarLoop]: Abstraction has 15157 states and 16992 transitions. [2024-11-27 23:39:19,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 15157 states and 16992 transitions. [2024-11-27 23:39:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2024-11-27 23:39:19,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:19,955 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:19,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:39:20,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:20,156 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:20,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1097980107, now seen corresponding path program 1 times [2024-11-27 23:39:20,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:20,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880711927] [2024-11-27 23:39:20,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:20,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 847 proven. 240 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-27 23:39:21,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880711927] [2024-11-27 23:39:21,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880711927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088410313] [2024-11-27 23:39:21,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:21,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:21,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:21,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:21,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:39:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:22,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:39:22,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 852 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-11-27 23:39:22,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:39:22,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088410313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:22,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:39:22,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-27 23:39:22,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385131004] [2024-11-27 23:39:22,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:22,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:39:22,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:22,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:39:22,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:39:22,216 INFO L87 Difference]: Start difference. First operand 15157 states and 16992 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:23,175 INFO L93 Difference]: Finished difference Result 30316 states and 33984 transitions. [2024-11-27 23:39:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:39:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 639 [2024-11-27 23:39:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:23,196 INFO L225 Difference]: With dead ends: 30316 [2024-11-27 23:39:23,196 INFO L226 Difference]: Without dead ends: 15345 [2024-11-27 23:39:23,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:39:23,206 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 112 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:23,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 346 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:39:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15345 states. [2024-11-27 23:39:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15345 to 15157. [2024-11-27 23:39:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15157 states, 15156 states have (on average 1.103853259435207) internal successors, (16730), 15156 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15157 states to 15157 states and 16730 transitions. [2024-11-27 23:39:23,368 INFO L78 Accepts]: Start accepts. Automaton has 15157 states and 16730 transitions. Word has length 639 [2024-11-27 23:39:23,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:23,369 INFO L471 AbstractCegarLoop]: Abstraction has 15157 states and 16730 transitions. [2024-11-27 23:39:23,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 15157 states and 16730 transitions. [2024-11-27 23:39:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2024-11-27 23:39:23,382 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:23,382 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:23,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:39:23,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 23:39:23,583 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:23,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1717664100, now seen corresponding path program 1 times [2024-11-27 23:39:23,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:23,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748389590] [2024-11-27 23:39:23,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:23,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 876 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-11-27 23:39:23,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:23,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748389590] [2024-11-27 23:39:23,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748389590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:23,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:23,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:39:23,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895942140] [2024-11-27 23:39:23,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:23,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:39:23,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:23,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:39:23,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:23,950 INFO L87 Difference]: Start difference. First operand 15157 states and 16730 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:24,793 INFO L93 Difference]: Finished difference Result 32518 states and 35866 transitions. [2024-11-27 23:39:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:39:24,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 645 [2024-11-27 23:39:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:24,807 INFO L225 Difference]: With dead ends: 32518 [2024-11-27 23:39:24,807 INFO L226 Difference]: Without dead ends: 18285 [2024-11-27 23:39:24,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:24,814 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 120 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:24,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 114 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:39:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18285 states. [2024-11-27 23:39:24,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18285 to 16627. [2024-11-27 23:39:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16627 states, 16626 states have (on average 1.0974377481053772) internal successors, (18246), 16626 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16627 states to 16627 states and 18246 transitions. [2024-11-27 23:39:25,011 INFO L78 Accepts]: Start accepts. Automaton has 16627 states and 18246 transitions. Word has length 645 [2024-11-27 23:39:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:25,011 INFO L471 AbstractCegarLoop]: Abstraction has 16627 states and 18246 transitions. [2024-11-27 23:39:25,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 16627 states and 18246 transitions. [2024-11-27 23:39:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2024-11-27 23:39:25,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:25,028 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:25,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:39:25,029 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:25,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:25,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1198800803, now seen corresponding path program 1 times [2024-11-27 23:39:25,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:25,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962942371] [2024-11-27 23:39:25,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:25,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 1049 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-11-27 23:39:25,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:25,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962942371] [2024-11-27 23:39:25,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962942371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:25,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:25,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:39:25,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219358431] [2024-11-27 23:39:25,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:25,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:39:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:25,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:39:25,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:25,628 INFO L87 Difference]: Start difference. First operand 16627 states and 18246 transitions. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:26,960 INFO L93 Difference]: Finished difference Result 35101 states and 38541 transitions. [2024-11-27 23:39:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:39:26,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 680 [2024-11-27 23:39:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:26,982 INFO L225 Difference]: With dead ends: 35101 [2024-11-27 23:39:26,982 INFO L226 Difference]: Without dead ends: 19582 [2024-11-27 23:39:26,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:26,991 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 192 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:26,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 58 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:39:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19582 states. [2024-11-27 23:39:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19582 to 16627. [2024-11-27 23:39:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16627 states, 16626 states have (on average 1.0974377481053772) internal successors, (18246), 16626 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16627 states to 16627 states and 18246 transitions. [2024-11-27 23:39:27,167 INFO L78 Accepts]: Start accepts. Automaton has 16627 states and 18246 transitions. Word has length 680 [2024-11-27 23:39:27,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:27,167 INFO L471 AbstractCegarLoop]: Abstraction has 16627 states and 18246 transitions. [2024-11-27 23:39:27,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 16627 states and 18246 transitions. [2024-11-27 23:39:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2024-11-27 23:39:27,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:27,183 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:27,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 23:39:27,183 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:27,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1912494515, now seen corresponding path program 1 times [2024-11-27 23:39:27,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:27,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931596926] [2024-11-27 23:39:27,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:27,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 1034 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-11-27 23:39:27,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:27,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931596926] [2024-11-27 23:39:27,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931596926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:27,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:27,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:39:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749590773] [2024-11-27 23:39:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:27,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:39:27,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:27,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:39:27,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:27,538 INFO L87 Difference]: Start difference. First operand 16627 states and 18246 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:28,313 INFO L93 Difference]: Finished difference Result 32882 states and 36090 transitions. [2024-11-27 23:39:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:39:28,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 694 [2024-11-27 23:39:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:28,327 INFO L225 Difference]: With dead ends: 32882 [2024-11-27 23:39:28,327 INFO L226 Difference]: Without dead ends: 17179 [2024-11-27 23:39:28,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:28,335 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 103 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:28,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 134 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:39:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17179 states. [2024-11-27 23:39:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17179 to 15701. [2024-11-27 23:39:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15701 states, 15700 states have (on average 1.0945859872611465) internal successors, (17185), 15700 states have internal predecessors, (17185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15701 states to 15701 states and 17185 transitions. [2024-11-27 23:39:28,501 INFO L78 Accepts]: Start accepts. Automaton has 15701 states and 17185 transitions. Word has length 694 [2024-11-27 23:39:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:28,502 INFO L471 AbstractCegarLoop]: Abstraction has 15701 states and 17185 transitions. [2024-11-27 23:39:28,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 15701 states and 17185 transitions. [2024-11-27 23:39:28,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2024-11-27 23:39:28,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:28,516 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:28,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:39:28,516 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:28,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:28,516 INFO L85 PathProgramCache]: Analyzing trace with hash 737170325, now seen corresponding path program 1 times [2024-11-27 23:39:28,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:28,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867245262] [2024-11-27 23:39:28,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-27 23:39:29,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867245262] [2024-11-27 23:39:29,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867245262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:29,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:29,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:39:29,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321013842] [2024-11-27 23:39:29,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:29,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:39:29,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:29,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:39:29,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:29,616 INFO L87 Difference]: Start difference. First operand 15701 states and 17185 transitions. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:31,090 INFO L93 Difference]: Finished difference Result 34722 states and 38039 transitions. [2024-11-27 23:39:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:39:31,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 725 [2024-11-27 23:39:31,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:31,102 INFO L225 Difference]: With dead ends: 34722 [2024-11-27 23:39:31,102 INFO L226 Difference]: Without dead ends: 19391 [2024-11-27 23:39:31,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:31,111 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 121 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:31,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 96 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 23:39:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19391 states. [2024-11-27 23:39:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19391 to 17732. [2024-11-27 23:39:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17732 states, 17731 states have (on average 1.0903502340533529) internal successors, (19333), 17731 states have internal predecessors, (19333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17732 states to 17732 states and 19333 transitions. [2024-11-27 23:39:31,281 INFO L78 Accepts]: Start accepts. Automaton has 17732 states and 19333 transitions. Word has length 725 [2024-11-27 23:39:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:31,282 INFO L471 AbstractCegarLoop]: Abstraction has 17732 states and 19333 transitions. [2024-11-27 23:39:31,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:31,282 INFO L276 IsEmpty]: Start isEmpty. Operand 17732 states and 19333 transitions. [2024-11-27 23:39:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2024-11-27 23:39:31,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:31,292 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:31,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:39:31,293 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:31,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1817314565, now seen corresponding path program 1 times [2024-11-27 23:39:31,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:31,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081053339] [2024-11-27 23:39:31,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:31,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1495 backedges. 903 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2024-11-27 23:39:31,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:31,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081053339] [2024-11-27 23:39:31,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081053339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:31,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:31,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:39:31,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374955689] [2024-11-27 23:39:31,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:31,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:39:31,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:31,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:39:31,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:31,615 INFO L87 Difference]: Start difference. First operand 17732 states and 19333 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:32,469 INFO L93 Difference]: Finished difference Result 35646 states and 38895 transitions. [2024-11-27 23:39:32,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:39:32,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 756 [2024-11-27 23:39:32,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:32,482 INFO L225 Difference]: With dead ends: 35646 [2024-11-27 23:39:32,483 INFO L226 Difference]: Without dead ends: 18654 [2024-11-27 23:39:32,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:32,491 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 195 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:32,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 338 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:39:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18654 states. [2024-11-27 23:39:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18654 to 14596. [2024-11-27 23:39:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14596 states, 14595 states have (on average 1.086125385405961) internal successors, (15852), 14595 states have internal predecessors, (15852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14596 states to 14596 states and 15852 transitions. [2024-11-27 23:39:32,644 INFO L78 Accepts]: Start accepts. Automaton has 14596 states and 15852 transitions. Word has length 756 [2024-11-27 23:39:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:32,645 INFO L471 AbstractCegarLoop]: Abstraction has 14596 states and 15852 transitions. [2024-11-27 23:39:32,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 14596 states and 15852 transitions. [2024-11-27 23:39:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2024-11-27 23:39:32,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:32,654 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:32,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 23:39:32,654 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:32,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:32,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1456791539, now seen corresponding path program 1 times [2024-11-27 23:39:32,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:32,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292988334] [2024-11-27 23:39:32,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:32,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:33,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 648 proven. 554 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-27 23:39:33,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:33,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292988334] [2024-11-27 23:39:33,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292988334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:33,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970994648] [2024-11-27 23:39:33,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:33,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:33,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:33,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:33,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:39:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:34,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:39:34,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-27 23:39:34,449 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:39:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970994648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:34,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:39:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-27 23:39:34,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350850508] [2024-11-27 23:39:34,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:34,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:39:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:34,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:39:34,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:39:34,451 INFO L87 Difference]: Start difference. First operand 14596 states and 15852 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:35,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:35,156 INFO L93 Difference]: Finished difference Result 29199 states and 31740 transitions. [2024-11-27 23:39:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:39:35,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 763 [2024-11-27 23:39:35,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:35,167 INFO L225 Difference]: With dead ends: 29199 [2024-11-27 23:39:35,167 INFO L226 Difference]: Without dead ends: 15159 [2024-11-27 23:39:35,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:39:35,173 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 103 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:35,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 327 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:39:35,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15159 states. [2024-11-27 23:39:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15159 to 14782. [2024-11-27 23:39:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14782 states, 14781 states have (on average 1.085041607469048) internal successors, (16038), 14781 states have internal predecessors, (16038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:35,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14782 states to 14782 states and 16038 transitions. [2024-11-27 23:39:35,306 INFO L78 Accepts]: Start accepts. Automaton has 14782 states and 16038 transitions. Word has length 763 [2024-11-27 23:39:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:35,307 INFO L471 AbstractCegarLoop]: Abstraction has 14782 states and 16038 transitions. [2024-11-27 23:39:35,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 14782 states and 16038 transitions. [2024-11-27 23:39:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2024-11-27 23:39:35,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:35,316 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:35,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:39:35,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68ae6e90-99f2-4f2f-9f55-25e748d46611/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 23:39:35,517 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:35,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1494290570, now seen corresponding path program 1 times [2024-11-27 23:39:35,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:35,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966869655] [2024-11-27 23:39:35,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:35,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 1317 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2024-11-27 23:39:36,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:36,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966869655] [2024-11-27 23:39:36,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966869655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:36,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:36,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:39:36,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629770316] [2024-11-27 23:39:36,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:36,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:39:36,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:36,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:39:36,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:36,594 INFO L87 Difference]: Start difference. First operand 14782 states and 16038 transitions. Second operand has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:37,797 INFO L93 Difference]: Finished difference Result 29374 states and 31788 transitions. [2024-11-27 23:39:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:39:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 817 [2024-11-27 23:39:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:37,808 INFO L225 Difference]: With dead ends: 29374 [2024-11-27 23:39:37,808 INFO L226 Difference]: Without dead ends: 15148 [2024-11-27 23:39:37,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:39:37,815 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 174 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:37,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 52 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:39:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2024-11-27 23:39:37,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 12564. [2024-11-27 23:39:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12564 states, 12563 states have (on average 1.078962031361936) internal successors, (13555), 12563 states have internal predecessors, (13555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:38,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12564 states to 12564 states and 13555 transitions. [2024-11-27 23:39:38,003 INFO L78 Accepts]: Start accepts. Automaton has 12564 states and 13555 transitions. Word has length 817 [2024-11-27 23:39:38,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:38,004 INFO L471 AbstractCegarLoop]: Abstraction has 12564 states and 13555 transitions. [2024-11-27 23:39:38,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 12564 states and 13555 transitions. [2024-11-27 23:39:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2024-11-27 23:39:38,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:38,013 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:38,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 23:39:38,013 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:38,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:38,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1603139587, now seen corresponding path program 1 times [2024-11-27 23:39:38,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:38,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764945659] [2024-11-27 23:39:38,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:38,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1341 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-27 23:39:38,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:38,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764945659] [2024-11-27 23:39:38,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764945659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:38,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:38,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:39:38,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662198903] [2024-11-27 23:39:38,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:38,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:39:38,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:38,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:39:38,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:38,656 INFO L87 Difference]: Start difference. First operand 12564 states and 13555 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:39,409 INFO L93 Difference]: Finished difference Result 22362 states and 24134 transitions. [2024-11-27 23:39:39,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:39:39,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 829 [2024-11-27 23:39:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:39,411 INFO L225 Difference]: With dead ends: 22362 [2024-11-27 23:39:39,411 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 23:39:39,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:39:39,417 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 99 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:39,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 321 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:39:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 23:39:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 23:39:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 23:39:39,418 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 829 [2024-11-27 23:39:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:39,419 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:39:39,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 23:39:39,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 23:39:39,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 23:39:39,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 23:39:39,433 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:39,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.