./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a10e0f33753cb095900e9272f8c4b5a4de145c52f67cb793ee2a7056ed745d06 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:02:57,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:02:57,161 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 02:02:57,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:02:57,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:02:57,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:02:57,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:02:57,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:02:57,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:02:57,205 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:02:57,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:02:57,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:02:57,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:02:57,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:02:57,207 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:02:57,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:02:57,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:02:57,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:02:57,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:02:57,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:02:57,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:02:57,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:02:57,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:02:57,208 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:02:57,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:02:57,209 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:02:57,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:02:57,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:02:57,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:02:57,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:02:57,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:02:57,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:02:57,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:02:57,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:02:57,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:02:57,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:02:57,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:02:57,210 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:02:57,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:02:57,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:02:57,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:02:57,211 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:02:57,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:02:57,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:02:57,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:02:57,212 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_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a10e0f33753cb095900e9272f8c4b5a4de145c52f67cb793ee2a7056ed745d06 [2024-11-24 02:02:57,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:02:57,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:02:57,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:02:57,628 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:02:57,628 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:02:57,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.3.prop1-func-interl.c [2024-11-24 02:03:01,315 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/data/7163eca53/cb4c6a51739b46bb8aad849289036a92/FLAGfa9d7df28 [2024-11-24 02:03:02,230 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:03:02,231 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.3.prop1-func-interl.c [2024-11-24 02:03:02,278 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/data/7163eca53/cb4c6a51739b46bb8aad849289036a92/FLAGfa9d7df28 [2024-11-24 02:03:02,305 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/data/7163eca53/cb4c6a51739b46bb8aad849289036a92 [2024-11-24 02:03:02,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:03:02,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:03:02,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:03:02,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:03:02,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:03:02,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:03:02" (1/1) ... [2024-11-24 02:03:02,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d97a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:02, skipping insertion in model container [2024-11-24 02:03:02,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:03:02" (1/1) ... [2024-11-24 02:03:02,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:03:02,840 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_7574b9d5-d028-421d-aea8-90152e7fbba1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.3.prop1-func-interl.c[1176,1189] [2024-11-24 02:03:03,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:03:03,960 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:03:03,974 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_7574b9d5-d028-421d-aea8-90152e7fbba1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.3.prop1-func-interl.c[1176,1189] [2024-11-24 02:03:04,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:03:04,917 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:03:04,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04 WrapperNode [2024-11-24 02:03:04,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:03:04,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:03:04,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:03:04,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:03:04,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:05,246 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:08,202 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18383 [2024-11-24 02:03:08,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:03:08,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:03:08,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:03:08,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:03:08,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:08,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:08,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:09,185 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]. [2024-11-24 02:03:09,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:09,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:09,873 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:09,929 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:10,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:10,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:10,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:10,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:03:10,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:03:10,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:03:10,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:03:10,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (1/1) ... [2024-11-24 02:03:10,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:03:10,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:03:10,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:03:10,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7574b9d5-d028-421d-aea8-90152e7fbba1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:03:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:03:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:03:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:03:10,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:03:12,182 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:03:12,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:04:02,440 INFO L? ?]: Removed 10374 outVars from TransFormulas that were not future-live. [2024-11-24 02:04:02,440 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:04:02,595 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:04:02,595 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 02:04:02,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:04:02 BoogieIcfgContainer [2024-11-24 02:04:02,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:04:02,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:04:02,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:04:02,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:04:02,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:03:02" (1/3) ... [2024-11-24 02:04:02,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4450e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:04:02, skipping insertion in model container [2024-11-24 02:04:02,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:04" (2/3) ... [2024-11-24 02:04:02,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4450e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:04:02, skipping insertion in model container [2024-11-24 02:04:02,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:04:02" (3/3) ... [2024-11-24 02:04:02,610 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.3.prop1-func-interl.c [2024-11-24 02:04:02,632 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:04:02,634 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.telephony.3.prop1-func-interl.c that has 1 procedures, 6486 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 02:04:02,887 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:04:02,909 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;@72a55c95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:04:02,910 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 02:04:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 6486 states, 6484 states have (on average 1.5044725478099938) internal successors, (9755), 6485 states have internal predecessors, (9755), 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) [2024-11-24 02:04:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-24 02:04:02,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:02,987 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:02,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:04:02,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:02,998 INFO L85 PathProgramCache]: Analyzing trace with hash 759799728, now seen corresponding path program 1 times [2024-11-24 02:04:03,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:03,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584184391] [2024-11-24 02:04:03,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584184391] [2024-11-24 02:04:05,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584184391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:05,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:05,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:05,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363085620] [2024-11-24 02:04:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:05,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:05,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:05,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:05,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:05,675 INFO L87 Difference]: Start difference. First operand has 6486 states, 6484 states have (on average 1.5044725478099938) internal successors, (9755), 6485 states have internal predecessors, (9755), 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 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2024-11-24 02:04:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:06,328 INFO L93 Difference]: Finished difference Result 12725 states and 19143 transitions. [2024-11-24 02:04:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:06,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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 259 [2024-11-24 02:04:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:06,397 INFO L225 Difference]: With dead ends: 12725 [2024-11-24 02:04:06,401 INFO L226 Difference]: Without dead ends: 6485 [2024-11-24 02:04:06,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:06,425 INFO L435 NwaCegarLoop]: 9749 mSDtfsCounter, 0 mSDsluCounter, 19492 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29241 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:06,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29241 Invalid, 11 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2024-11-24 02:04:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 6485. [2024-11-24 02:04:06,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6485 states, 6484 states have (on average 1.5041640962368907) internal successors, (9753), 6484 states have internal predecessors, (9753), 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) [2024-11-24 02:04:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 9753 transitions. [2024-11-24 02:04:06,767 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 9753 transitions. Word has length 259 [2024-11-24 02:04:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:06,771 INFO L471 AbstractCegarLoop]: Abstraction has 6485 states and 9753 transitions. [2024-11-24 02:04:06,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2024-11-24 02:04:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 9753 transitions. [2024-11-24 02:04:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-24 02:04:06,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:06,785 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:06,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 02:04:06,786 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:04:06,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2080651892, now seen corresponding path program 1 times [2024-11-24 02:04:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:06,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391643174] [2024-11-24 02:04:06,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:06,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:07,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:07,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391643174] [2024-11-24 02:04:07,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391643174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:07,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:07,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507222831] [2024-11-24 02:04:07,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:07,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:07,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:07,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:07,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:07,780 INFO L87 Difference]: Start difference. First operand 6485 states and 9753 transitions. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2024-11-24 02:04:08,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:08,170 INFO L93 Difference]: Finished difference Result 12726 states and 19141 transitions. [2024-11-24 02:04:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:08,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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 260 [2024-11-24 02:04:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:08,203 INFO L225 Difference]: With dead ends: 12726 [2024-11-24 02:04:08,203 INFO L226 Difference]: Without dead ends: 6487 [2024-11-24 02:04:08,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:08,217 INFO L435 NwaCegarLoop]: 9749 mSDtfsCounter, 0 mSDsluCounter, 19488 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29237 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:08,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29237 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:08,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6487 states. [2024-11-24 02:04:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6487 to 6487. [2024-11-24 02:04:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6487 states, 6486 states have (on average 1.5040086339808818) internal successors, (9755), 6486 states have internal predecessors, (9755), 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) [2024-11-24 02:04:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6487 states to 6487 states and 9755 transitions. [2024-11-24 02:04:08,435 INFO L78 Accepts]: Start accepts. Automaton has 6487 states and 9755 transitions. Word has length 260 [2024-11-24 02:04:08,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:08,437 INFO L471 AbstractCegarLoop]: Abstraction has 6487 states and 9755 transitions. [2024-11-24 02:04:08,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2024-11-24 02:04:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6487 states and 9755 transitions. [2024-11-24 02:04:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-24 02:04:08,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:08,443 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:08,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:04:08,444 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:04:08,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1022265079, now seen corresponding path program 1 times [2024-11-24 02:04:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:08,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134888190] [2024-11-24 02:04:08,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:08,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:09,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:09,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134888190] [2024-11-24 02:04:09,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134888190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:09,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:09,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 02:04:09,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764668516] [2024-11-24 02:04:09,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:09,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:04:09,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:09,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:04:09,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:09,539 INFO L87 Difference]: Start difference. First operand 6487 states and 9755 transitions. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 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) [2024-11-24 02:04:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:10,184 INFO L93 Difference]: Finished difference Result 18035 states and 27130 transitions. [2024-11-24 02:04:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:04:10,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 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 261 [2024-11-24 02:04:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:10,250 INFO L225 Difference]: With dead ends: 18035 [2024-11-24 02:04:10,250 INFO L226 Difference]: Without dead ends: 11794 [2024-11-24 02:04:10,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:04:10,264 INFO L435 NwaCegarLoop]: 9745 mSDtfsCounter, 8108 mSDsluCounter, 28862 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8108 SdHoareTripleChecker+Valid, 38607 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:10,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8108 Valid, 38607 Invalid, 30 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:04:10,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11794 states. [2024-11-24 02:04:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11794 to 6745. [2024-11-24 02:04:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6745 states, 6744 states have (on average 1.5037069988137604) internal successors, (10141), 6744 states have internal predecessors, (10141), 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) [2024-11-24 02:04:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 10141 transitions. [2024-11-24 02:04:10,569 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 10141 transitions. Word has length 261 [2024-11-24 02:04:10,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:10,569 INFO L471 AbstractCegarLoop]: Abstraction has 6745 states and 10141 transitions. [2024-11-24 02:04:10,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 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) [2024-11-24 02:04:10,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 10141 transitions. [2024-11-24 02:04:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3321 [2024-11-24 02:04:11,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:11,086 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:11,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:04:11,087 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:04:11,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:11,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1049593481, now seen corresponding path program 1 times [2024-11-24 02:04:11,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:11,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861495462] [2024-11-24 02:04:11,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:33,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861495462] [2024-11-24 02:04:33,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861495462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:33,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:33,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:33,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887307655] [2024-11-24 02:04:33,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:33,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:33,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:33,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:33,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:33,474 INFO L87 Difference]: Start difference. First operand 6745 states and 10141 transitions. Second operand has 4 states, 4 states have (on average 830.0) internal successors, (3320), 4 states have internal predecessors, (3320), 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) [2024-11-24 02:04:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:34,839 INFO L93 Difference]: Finished difference Result 12986 states and 19528 transitions. [2024-11-24 02:04:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:34,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 830.0) internal successors, (3320), 4 states have internal predecessors, (3320), 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 3320 [2024-11-24 02:04:34,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:35,154 INFO L225 Difference]: With dead ends: 12986 [2024-11-24 02:04:35,154 INFO L226 Difference]: Without dead ends: 6745 [2024-11-24 02:04:35,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:35,162 INFO L435 NwaCegarLoop]: 9713 mSDtfsCounter, 9495 mSDsluCounter, 9711 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9495 SdHoareTripleChecker+Valid, 19424 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:35,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9495 Valid, 19424 Invalid, 73 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 02:04:35,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2024-11-24 02:04:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 6745. [2024-11-24 02:04:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6745 states, 6744 states have (on average 1.50355871886121) internal successors, (10140), 6744 states have internal predecessors, (10140), 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) [2024-11-24 02:04:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 10140 transitions. [2024-11-24 02:04:35,341 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 10140 transitions. Word has length 3320 [2024-11-24 02:04:35,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:35,344 INFO L471 AbstractCegarLoop]: Abstraction has 6745 states and 10140 transitions. [2024-11-24 02:04:35,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 830.0) internal successors, (3320), 4 states have internal predecessors, (3320), 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) [2024-11-24 02:04:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 10140 transitions. [2024-11-24 02:04:35,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3322 [2024-11-24 02:04:35,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:35,850 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:35,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:04:35,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:04:35,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1229772268, now seen corresponding path program 1 times [2024-11-24 02:04:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:35,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881535626] [2024-11-24 02:04:35,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:35,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:49,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881535626] [2024-11-24 02:04:49,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881535626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:49,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:49,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:04:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584928132] [2024-11-24 02:04:49,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:49,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:49,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:49,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:49,106 INFO L87 Difference]: Start difference. First operand 6745 states and 10140 transitions. Second operand has 4 states, 4 states have (on average 830.25) internal successors, (3321), 4 states have internal predecessors, (3321), 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) [2024-11-24 02:04:50,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:50,061 INFO L93 Difference]: Finished difference Result 12986 states and 19526 transitions. [2024-11-24 02:04:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:50,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 830.25) internal successors, (3321), 4 states have internal predecessors, (3321), 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 3321 [2024-11-24 02:04:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:50,083 INFO L225 Difference]: With dead ends: 12986 [2024-11-24 02:04:50,083 INFO L226 Difference]: Without dead ends: 6745 [2024-11-24 02:04:50,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:04:50,093 INFO L435 NwaCegarLoop]: 9712 mSDtfsCounter, 9477 mSDsluCounter, 9710 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9477 SdHoareTripleChecker+Valid, 19422 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:50,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9477 Valid, 19422 Invalid, 73 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 02:04:50,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2024-11-24 02:04:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 6745. [2024-11-24 02:04:50,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6745 states, 6744 states have (on average 1.5034104389086596) internal successors, (10139), 6744 states have internal predecessors, (10139), 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) [2024-11-24 02:04:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 10139 transitions. [2024-11-24 02:04:50,305 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 10139 transitions. Word has length 3321 [2024-11-24 02:04:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:50,306 INFO L471 AbstractCegarLoop]: Abstraction has 6745 states and 10139 transitions. [2024-11-24 02:04:50,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 830.25) internal successors, (3321), 4 states have internal predecessors, (3321), 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) [2024-11-24 02:04:50,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 10139 transitions. [2024-11-24 02:04:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3323 [2024-11-24 02:04:50,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:50,494 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:50,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 02:04:50,494 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:04:50,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1114012460, now seen corresponding path program 1 times [2024-11-24 02:04:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:50,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708258122] [2024-11-24 02:04:50,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms