./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/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_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:11:59,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:11:59,207 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:11:59,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:11:59,213 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:11:59,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:11:59,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:11:59,246 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:11:59,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:11:59,247 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:11:59,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:11:59,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:11:59,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:11:59,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:11:59,250 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:11:59,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:11:59,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:11:59,250 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:11:59,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:11:59,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:11:59,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:11:59,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:11:59,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:11:59,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:11:59,251 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:11:59,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:11:59,251 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:11:59,252 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:11:59,252 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:11:59,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:11:59,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:11:59,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:11:59,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:11:59,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:11:59,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:11:59,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:11:59,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:11:59,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:11:59,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:11:59,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:11:59,254 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:11:59,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:11:59,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:11:59,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:11:59,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:11:59,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:11:59,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:11:59,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:11:59,255 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_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 [2024-11-23 23:11:59,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:11:59,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:11:59,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:11:59,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:11:59,604 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:11:59,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-11-23 23:12:02,820 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/data/832c87d69/ffb1bf3c35a145c2945ebd2999bcce5c/FLAG72d66878d [2024-11-23 23:12:03,135 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:12:03,135 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-11-23 23:12:03,156 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/data/832c87d69/ffb1bf3c35a145c2945ebd2999bcce5c/FLAG72d66878d [2024-11-23 23:12:03,185 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/data/832c87d69/ffb1bf3c35a145c2945ebd2999bcce5c [2024-11-23 23:12:03,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:12:03,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:12:03,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:12:03,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:12:03,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:12:03,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635a4be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03, skipping insertion in model container [2024-11-23 23:12:03,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:12:03,627 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_2242d8c0-e5c9-4561-a52d-6580f2502ecd/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2024-11-23 23:12:03,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:12:03,656 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:12:03,748 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_2242d8c0-e5c9-4561-a52d-6580f2502ecd/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2024-11-23 23:12:03,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:12:03,768 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:12:03,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03 WrapperNode [2024-11-23 23:12:03,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:12:03,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:12:03,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:12:03,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:12:03,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,870 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 510 [2024-11-23 23:12:03,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:12:03,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:12:03,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:12:03,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:12:03,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,935 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:12:03,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,956 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,958 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:12:03,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:12:03,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:12:03,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:12:03,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (1/1) ... [2024-11-23 23:12:03,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:12:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:12:04,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:12:04,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:12:04,068 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-23 23:12:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-23 23:12:04,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:12:04,068 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-23 23:12:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-23 23:12:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-23 23:12:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-23 23:12:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:12:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:12:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:12:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-23 23:12:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-23 23:12:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:12:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:12:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-23 23:12:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-23 23:12:04,235 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:12:04,237 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:12:05,171 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-23 23:12:05,172 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:12:05,188 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:12:05,188 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:12:05,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:12:05 BoogieIcfgContainer [2024-11-23 23:12:05,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:12:05,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:12:05,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:12:05,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:12:05,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:12:03" (1/3) ... [2024-11-23 23:12:05,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755d074e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:12:05, skipping insertion in model container [2024-11-23 23:12:05,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:03" (2/3) ... [2024-11-23 23:12:05,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755d074e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:12:05, skipping insertion in model container [2024-11-23 23:12:05,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:12:05" (3/3) ... [2024-11-23 23:12:05,200 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-11-23 23:12:05,220 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:12:05,223 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c that has 7 procedures, 175 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:12:05,308 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:12:05,324 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;@7c55cdf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:12:05,324 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:12:05,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 138 states have (on average 1.5579710144927537) internal successors, (215), 139 states have internal predecessors, (215), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-23 23:12:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-23 23:12:05,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:05,341 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] [2024-11-23 23:12:05,341 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:05,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:05,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1828065828, now seen corresponding path program 1 times [2024-11-23 23:12:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:05,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854546299] [2024-11-23 23:12:05,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:05,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:12:05,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:05,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854546299] [2024-11-23 23:12:05,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854546299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:05,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:05,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:12:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884806820] [2024-11-23 23:12:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:05,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:12:05,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:05,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:12:05,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:12:05,755 INFO L87 Difference]: Start difference. First operand has 175 states, 138 states have (on average 1.5579710144927537) internal successors, (215), 139 states have internal predecessors, (215), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:12:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:05,829 INFO L93 Difference]: Finished difference Result 334 states and 546 transitions. [2024-11-23 23:12:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:12:05,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-23 23:12:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:05,845 INFO L225 Difference]: With dead ends: 334 [2024-11-23 23:12:05,846 INFO L226 Difference]: Without dead ends: 171 [2024-11-23 23:12:05,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:12:05,859 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:05,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:05,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-23 23:12:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-23 23:12:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 135 states have (on average 1.5407407407407407) internal successors, (208), 135 states have internal predecessors, (208), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-23 23:12:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 266 transitions. [2024-11-23 23:12:05,922 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 266 transitions. Word has length 29 [2024-11-23 23:12:05,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:05,923 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 266 transitions. [2024-11-23 23:12:05,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:12:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 266 transitions. [2024-11-23 23:12:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-23 23:12:05,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:05,925 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] [2024-11-23 23:12:05,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:12:05,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:05,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash 22627494, now seen corresponding path program 1 times [2024-11-23 23:12:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:05,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694116066] [2024-11-23 23:12:05,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:12:06,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:06,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694116066] [2024-11-23 23:12:06,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694116066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:06,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:06,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:12:06,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982718031] [2024-11-23 23:12:06,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:06,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:12:06,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:06,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:12:06,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:12:06,435 INFO L87 Difference]: Start difference. First operand 171 states and 266 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:12:06,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:06,642 INFO L93 Difference]: Finished difference Result 440 states and 690 transitions. [2024-11-23 23:12:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:12:06,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-23 23:12:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:06,647 INFO L225 Difference]: With dead ends: 440 [2024-11-23 23:12:06,647 INFO L226 Difference]: Without dead ends: 283 [2024-11-23 23:12:06,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:12:06,649 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 135 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:06,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1277 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-23 23:12:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 171. [2024-11-23 23:12:06,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 135 states have (on average 1.451851851851852) internal successors, (196), 135 states have internal predecessors, (196), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-23 23:12:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 254 transitions. [2024-11-23 23:12:06,673 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 254 transitions. Word has length 29 [2024-11-23 23:12:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:06,673 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 254 transitions. [2024-11-23 23:12:06,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:12:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 254 transitions. [2024-11-23 23:12:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 23:12:06,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:06,674 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] [2024-11-23 23:12:06,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:12:06,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:06,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -526837142, now seen corresponding path program 1 times [2024-11-23 23:12:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:06,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654029754] [2024-11-23 23:12:06,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:12:07,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:07,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654029754] [2024-11-23 23:12:07,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654029754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:07,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:07,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:07,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260106468] [2024-11-23 23:12:07,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:07,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:07,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:07,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:07,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:07,061 INFO L87 Difference]: Start difference. First operand 171 states and 254 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:12:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:07,160 INFO L93 Difference]: Finished difference Result 329 states and 498 transitions. [2024-11-23 23:12:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:07,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-11-23 23:12:07,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:07,163 INFO L225 Difference]: With dead ends: 329 [2024-11-23 23:12:07,163 INFO L226 Difference]: Without dead ends: 175 [2024-11-23 23:12:07,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:07,168 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 3 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:07,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 734 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-23 23:12:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-23 23:12:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.4420289855072463) internal successors, (199), 138 states have internal predecessors, (199), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-23 23:12:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 257 transitions. [2024-11-23 23:12:07,192 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 257 transitions. Word has length 40 [2024-11-23 23:12:07,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:07,197 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 257 transitions. [2024-11-23 23:12:07,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:12:07,197 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 257 transitions. [2024-11-23 23:12:07,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 23:12:07,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:07,198 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:07,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:12:07,203 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:07,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash -285453576, now seen corresponding path program 1 times [2024-11-23 23:12:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377569898] [2024-11-23 23:12:07,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:07,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:12:07,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:07,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377569898] [2024-11-23 23:12:07,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377569898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:07,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:07,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:12:07,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921143849] [2024-11-23 23:12:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:07,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:12:07,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:07,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:12:07,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:12:07,361 INFO L87 Difference]: Start difference. First operand 175 states and 257 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:07,432 INFO L93 Difference]: Finished difference Result 482 states and 719 transitions. [2024-11-23 23:12:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:12:07,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-23 23:12:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:07,438 INFO L225 Difference]: With dead ends: 482 [2024-11-23 23:12:07,438 INFO L226 Difference]: Without dead ends: 324 [2024-11-23 23:12:07,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:12:07,442 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 210 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:07,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 505 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-23 23:12:07,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2024-11-23 23:12:07,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 245 states have (on average 1.4653061224489796) internal successors, (359), 246 states have internal predecessors, (359), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-23 23:12:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 473 transitions. [2024-11-23 23:12:07,500 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 473 transitions. Word has length 56 [2024-11-23 23:12:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:07,500 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 473 transitions. [2024-11-23 23:12:07,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 473 transitions. [2024-11-23 23:12:07,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 23:12:07,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:07,506 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:07,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:12:07,506 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:07,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash 231641109, now seen corresponding path program 1 times [2024-11-23 23:12:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152377164] [2024-11-23 23:12:07,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:12:07,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:07,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152377164] [2024-11-23 23:12:07,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152377164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:07,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:07,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:12:07,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897559908] [2024-11-23 23:12:07,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:07,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:12:07,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:07,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:12:07,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:12:07,681 INFO L87 Difference]: Start difference. First operand 317 states and 473 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:07,778 INFO L93 Difference]: Finished difference Result 893 states and 1343 transitions. [2024-11-23 23:12:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:12:07,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-23 23:12:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:07,791 INFO L225 Difference]: With dead ends: 893 [2024-11-23 23:12:07,792 INFO L226 Difference]: Without dead ends: 593 [2024-11-23 23:12:07,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:12:07,794 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 206 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:07,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 522 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-23 23:12:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 576. [2024-11-23 23:12:07,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 434 states have (on average 1.4723502304147464) internal successors, (639), 437 states have internal predecessors, (639), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2024-11-23 23:12:07,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 865 transitions. [2024-11-23 23:12:07,881 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 865 transitions. Word has length 57 [2024-11-23 23:12:07,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:07,882 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 865 transitions. [2024-11-23 23:12:07,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 865 transitions. [2024-11-23 23:12:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 23:12:07,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:07,888 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:07,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:12:07,888 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:07,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:07,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1048222569, now seen corresponding path program 1 times [2024-11-23 23:12:07,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:07,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093129232] [2024-11-23 23:12:07,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:07,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:12:08,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:08,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093129232] [2024-11-23 23:12:08,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093129232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:08,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:08,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:12:08,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514474112] [2024-11-23 23:12:08,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:08,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:12:08,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:08,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:12:08,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:08,209 INFO L87 Difference]: Start difference. First operand 576 states and 865 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:08,554 INFO L93 Difference]: Finished difference Result 1229 states and 1844 transitions. [2024-11-23 23:12:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:12:08,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-23 23:12:08,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:08,561 INFO L225 Difference]: With dead ends: 1229 [2024-11-23 23:12:08,562 INFO L226 Difference]: Without dead ends: 670 [2024-11-23 23:12:08,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:12:08,569 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 352 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:08,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 648 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:12:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-11-23 23:12:08,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 654. [2024-11-23 23:12:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 504 states have (on average 1.4583333333333333) internal successors, (735), 507 states have internal predecessors, (735), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-23 23:12:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 969 transitions. [2024-11-23 23:12:08,694 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 969 transitions. Word has length 57 [2024-11-23 23:12:08,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:08,695 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 969 transitions. [2024-11-23 23:12:08,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:08,696 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 969 transitions. [2024-11-23 23:12:08,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-23 23:12:08,697 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:08,697 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:08,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:12:08,698 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:08,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:08,698 INFO L85 PathProgramCache]: Analyzing trace with hash 142075639, now seen corresponding path program 1 times [2024-11-23 23:12:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:08,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206009762] [2024-11-23 23:12:08,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:08,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:12:08,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:08,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206009762] [2024-11-23 23:12:08,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206009762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:08,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:08,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:12:08,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118215218] [2024-11-23 23:12:08,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:08,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:12:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:08,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:12:08,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:08,946 INFO L87 Difference]: Start difference. First operand 654 states and 969 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:09,273 INFO L93 Difference]: Finished difference Result 1233 states and 1844 transitions. [2024-11-23 23:12:09,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:12:09,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2024-11-23 23:12:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:09,279 INFO L225 Difference]: With dead ends: 1233 [2024-11-23 23:12:09,280 INFO L226 Difference]: Without dead ends: 674 [2024-11-23 23:12:09,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:12:09,283 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 352 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:09,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 648 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:12:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-23 23:12:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 662. [2024-11-23 23:12:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 512 states have (on average 1.451171875) internal successors, (743), 515 states have internal predecessors, (743), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-23 23:12:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 977 transitions. [2024-11-23 23:12:09,370 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 977 transitions. Word has length 58 [2024-11-23 23:12:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:09,371 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 977 transitions. [2024-11-23 23:12:09,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 977 transitions. [2024-11-23 23:12:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-23 23:12:09,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:09,374 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:09,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:12:09,375 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:09,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:09,375 INFO L85 PathProgramCache]: Analyzing trace with hash 496080585, now seen corresponding path program 1 times [2024-11-23 23:12:09,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:09,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420250565] [2024-11-23 23:12:09,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:09,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:12:09,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:09,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420250565] [2024-11-23 23:12:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420250565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:09,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:09,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:09,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653574109] [2024-11-23 23:12:09,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:09,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:09,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:09,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:09,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:09,608 INFO L87 Difference]: Start difference. First operand 662 states and 977 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:09,852 INFO L93 Difference]: Finished difference Result 1221 states and 1824 transitions. [2024-11-23 23:12:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:09,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-11-23 23:12:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:09,860 INFO L225 Difference]: With dead ends: 1221 [2024-11-23 23:12:09,860 INFO L226 Difference]: Without dead ends: 662 [2024-11-23 23:12:09,862 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 [2024-11-23 23:12:09,864 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 52 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:09,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 646 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:12:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-23 23:12:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-11-23 23:12:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 512 states have (on average 1.443359375) internal successors, (739), 515 states have internal predecessors, (739), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-23 23:12:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 973 transitions. [2024-11-23 23:12:09,943 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 973 transitions. Word has length 60 [2024-11-23 23:12:09,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:09,943 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 973 transitions. [2024-11-23 23:12:09,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:12:09,943 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 973 transitions. [2024-11-23 23:12:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 23:12:09,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:09,946 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:09,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:12:09,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:09,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:09,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1746874331, now seen corresponding path program 1 times [2024-11-23 23:12:09,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:09,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074426807] [2024-11-23 23:12:09,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:09,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:12:10,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:10,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074426807] [2024-11-23 23:12:10,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074426807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:10,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:10,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:10,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544150612] [2024-11-23 23:12:10,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:10,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:10,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:10,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:10,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:10,240 INFO L87 Difference]: Start difference. First operand 662 states and 973 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:12:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:10,335 INFO L93 Difference]: Finished difference Result 1241 states and 1848 transitions. [2024-11-23 23:12:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:10,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 61 [2024-11-23 23:12:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:10,341 INFO L225 Difference]: With dead ends: 1241 [2024-11-23 23:12:10,342 INFO L226 Difference]: Without dead ends: 682 [2024-11-23 23:12:10,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:10,345 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 4 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:10,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 746 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-23 23:12:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2024-11-23 23:12:10,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 528 states have (on average 1.4299242424242424) internal successors, (755), 531 states have internal predecessors, (755), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-23 23:12:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 989 transitions. [2024-11-23 23:12:10,430 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 989 transitions. Word has length 61 [2024-11-23 23:12:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:10,431 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 989 transitions. [2024-11-23 23:12:10,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:12:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 989 transitions. [2024-11-23 23:12:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 23:12:10,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:10,435 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:10,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:12:10,435 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:10,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:10,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1835268779, now seen corresponding path program 1 times [2024-11-23 23:12:10,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:10,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991400052] [2024-11-23 23:12:10,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:10,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:12:10,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:10,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991400052] [2024-11-23 23:12:10,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991400052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:10,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:10,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:10,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787384177] [2024-11-23 23:12:10,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:10,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:10,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:10,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:10,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:10,712 INFO L87 Difference]: Start difference. First operand 682 states and 989 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-23 23:12:10,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:10,837 INFO L93 Difference]: Finished difference Result 1281 states and 1892 transitions. [2024-11-23 23:12:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:10,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2024-11-23 23:12:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:10,844 INFO L225 Difference]: With dead ends: 1281 [2024-11-23 23:12:10,845 INFO L226 Difference]: Without dead ends: 702 [2024-11-23 23:12:10,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:10,849 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 4 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:10,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 732 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-23 23:12:10,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2024-11-23 23:12:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 544 states have (on average 1.4172794117647058) internal successors, (771), 547 states have internal predecessors, (771), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-23 23:12:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1005 transitions. [2024-11-23 23:12:10,941 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1005 transitions. Word has length 69 [2024-11-23 23:12:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:10,941 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 1005 transitions. [2024-11-23 23:12:10,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-23 23:12:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1005 transitions. [2024-11-23 23:12:10,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-23 23:12:10,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:10,943 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:10,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:12:10,945 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:10,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:10,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1392802347, now seen corresponding path program 1 times [2024-11-23 23:12:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:10,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469055884] [2024-11-23 23:12:10,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:10,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:12:11,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:11,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469055884] [2024-11-23 23:12:11,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469055884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:11,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:11,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:11,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584138463] [2024-11-23 23:12:11,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:11,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:11,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:11,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:11,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:11,185 INFO L87 Difference]: Start difference. First operand 702 states and 1005 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-23 23:12:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:11,313 INFO L93 Difference]: Finished difference Result 1317 states and 1908 transitions. [2024-11-23 23:12:11,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:11,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-11-23 23:12:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:11,321 INFO L225 Difference]: With dead ends: 1317 [2024-11-23 23:12:11,321 INFO L226 Difference]: Without dead ends: 718 [2024-11-23 23:12:11,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:11,324 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 3 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:11,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 742 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-23 23:12:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2024-11-23 23:12:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 556 states have (on average 1.408273381294964) internal successors, (783), 559 states have internal predecessors, (783), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-23 23:12:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1017 transitions. [2024-11-23 23:12:11,422 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1017 transitions. Word has length 77 [2024-11-23 23:12:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:11,423 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1017 transitions. [2024-11-23 23:12:11,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-23 23:12:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1017 transitions. [2024-11-23 23:12:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-23 23:12:11,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:11,426 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:11,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:12:11,426 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:11,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1003656956, now seen corresponding path program 1 times [2024-11-23 23:12:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:11,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98699414] [2024-11-23 23:12:11,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:12:11,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:11,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98699414] [2024-11-23 23:12:11,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98699414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:11,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:11,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:11,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401038079] [2024-11-23 23:12:11,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:11,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:11,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:11,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:11,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:11,717 INFO L87 Difference]: Start difference. First operand 718 states and 1017 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-23 23:12:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:11,839 INFO L93 Difference]: Finished difference Result 1353 states and 1948 transitions. [2024-11-23 23:12:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:11,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-11-23 23:12:11,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:11,845 INFO L225 Difference]: With dead ends: 1353 [2024-11-23 23:12:11,846 INFO L226 Difference]: Without dead ends: 738 [2024-11-23 23:12:11,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:11,849 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 4 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:11,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 732 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-23 23:12:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2024-11-23 23:12:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 572 states have (on average 1.3968531468531469) internal successors, (799), 575 states have internal predecessors, (799), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-23 23:12:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1033 transitions. [2024-11-23 23:12:11,917 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1033 transitions. Word has length 77 [2024-11-23 23:12:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:11,918 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1033 transitions. [2024-11-23 23:12:11,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-23 23:12:11,918 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1033 transitions. [2024-11-23 23:12:11,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-23 23:12:11,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:11,924 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:11,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:12:11,924 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:11,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:11,925 INFO L85 PathProgramCache]: Analyzing trace with hash 623136640, now seen corresponding path program 1 times [2024-11-23 23:12:11,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:11,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706046668] [2024-11-23 23:12:11,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:11,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 23:12:12,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706046668] [2024-11-23 23:12:12,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706046668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:12,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:12,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:12,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634786437] [2024-11-23 23:12:12,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:12,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:12,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:12,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:12,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:12,223 INFO L87 Difference]: Start difference. First operand 738 states and 1033 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-23 23:12:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:12,339 INFO L93 Difference]: Finished difference Result 1397 states and 1976 transitions. [2024-11-23 23:12:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:12,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 85 [2024-11-23 23:12:12,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:12,345 INFO L225 Difference]: With dead ends: 1397 [2024-11-23 23:12:12,346 INFO L226 Difference]: Without dead ends: 762 [2024-11-23 23:12:12,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:12,348 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 5 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:12,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 744 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-23 23:12:12,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2024-11-23 23:12:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 592 states have (on average 1.383445945945946) internal successors, (819), 595 states have internal predecessors, (819), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-23 23:12:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1053 transitions. [2024-11-23 23:12:12,414 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1053 transitions. Word has length 85 [2024-11-23 23:12:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:12,414 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 1053 transitions. [2024-11-23 23:12:12,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-23 23:12:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1053 transitions. [2024-11-23 23:12:12,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-23 23:12:12,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:12,418 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:12,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:12:12,418 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:12,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash 412345962, now seen corresponding path program 1 times [2024-11-23 23:12:12,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:12,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607527926] [2024-11-23 23:12:12,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:12,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-23 23:12:13,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:13,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607527926] [2024-11-23 23:12:13,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607527926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:13,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:13,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:12:13,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125704224] [2024-11-23 23:12:13,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:13,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:12:13,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:13,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:12:13,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:12:13,373 INFO L87 Difference]: Start difference. First operand 762 states and 1053 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 23:12:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:13,872 INFO L93 Difference]: Finished difference Result 1990 states and 2738 transitions. [2024-11-23 23:12:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:12:13,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 88 [2024-11-23 23:12:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:13,882 INFO L225 Difference]: With dead ends: 1990 [2024-11-23 23:12:13,882 INFO L226 Difference]: Without dead ends: 1331 [2024-11-23 23:12:13,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:12:13,885 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 189 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:13,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1442 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:12:13,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-11-23 23:12:13,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 915. [2024-11-23 23:12:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 708 states have (on average 1.3728813559322033) internal successors, (972), 712 states have internal predecessors, (972), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-23 23:12:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1254 transitions. [2024-11-23 23:12:13,987 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1254 transitions. Word has length 88 [2024-11-23 23:12:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:13,988 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1254 transitions. [2024-11-23 23:12:13,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 23:12:13,988 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1254 transitions. [2024-11-23 23:12:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-23 23:12:13,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:13,989 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:13,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:12:13,989 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:13,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:13,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1720810152, now seen corresponding path program 1 times [2024-11-23 23:12:13,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:13,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805148658] [2024-11-23 23:12:13,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:13,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-23 23:12:14,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:14,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805148658] [2024-11-23 23:12:14,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805148658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:14,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:14,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:14,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447389324] [2024-11-23 23:12:14,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:14,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:14,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:14,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:14,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:14,206 INFO L87 Difference]: Start difference. First operand 915 states and 1254 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-23 23:12:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:14,331 INFO L93 Difference]: Finished difference Result 1702 states and 2356 transitions. [2024-11-23 23:12:14,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:14,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 92 [2024-11-23 23:12:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:14,340 INFO L225 Difference]: With dead ends: 1702 [2024-11-23 23:12:14,340 INFO L226 Difference]: Without dead ends: 935 [2024-11-23 23:12:14,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:14,343 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 3 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:14,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 742 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:14,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2024-11-23 23:12:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 935. [2024-11-23 23:12:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 723 states have (on average 1.3651452282157677) internal successors, (987), 727 states have internal predecessors, (987), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-23 23:12:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1269 transitions. [2024-11-23 23:12:14,448 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1269 transitions. Word has length 92 [2024-11-23 23:12:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:14,449 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1269 transitions. [2024-11-23 23:12:14,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-23 23:12:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1269 transitions. [2024-11-23 23:12:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 23:12:14,451 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:14,451 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:14,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:12:14,451 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:14,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2083322699, now seen corresponding path program 1 times [2024-11-23 23:12:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:14,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459680238] [2024-11-23 23:12:14,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 23:12:14,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:14,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459680238] [2024-11-23 23:12:14,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459680238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:14,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:14,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:12:14,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607472040] [2024-11-23 23:12:14,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:14,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:12:14,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:14,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:12:14,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:12:14,852 INFO L87 Difference]: Start difference. First operand 935 states and 1269 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-23 23:12:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:15,069 INFO L93 Difference]: Finished difference Result 1348 states and 1931 transitions. [2024-11-23 23:12:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:12:15,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-11-23 23:12:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:15,079 INFO L225 Difference]: With dead ends: 1348 [2024-11-23 23:12:15,079 INFO L226 Difference]: Without dead ends: 1346 [2024-11-23 23:12:15,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:12:15,081 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 138 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:15,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1997 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2024-11-23 23:12:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 937. [2024-11-23 23:12:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 723 states have (on average 1.3651452282157677) internal successors, (987), 728 states have internal predecessors, (987), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-23 23:12:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1271 transitions. [2024-11-23 23:12:15,207 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1271 transitions. Word has length 91 [2024-11-23 23:12:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:15,208 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1271 transitions. [2024-11-23 23:12:15,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-23 23:12:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1271 transitions. [2024-11-23 23:12:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 23:12:15,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:15,210 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:15,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:12:15,210 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:15,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash 357669874, now seen corresponding path program 1 times [2024-11-23 23:12:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:15,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68821799] [2024-11-23 23:12:15,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 23:12:15,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:15,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68821799] [2024-11-23 23:12:15,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68821799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:15,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:15,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:12:15,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238084122] [2024-11-23 23:12:15,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:15,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:12:15,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:15,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:12:15,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:12:15,508 INFO L87 Difference]: Start difference. First operand 937 states and 1271 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 23:12:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:15,810 INFO L93 Difference]: Finished difference Result 1747 states and 2388 transitions. [2024-11-23 23:12:15,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:12:15,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 94 [2024-11-23 23:12:15,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:15,819 INFO L225 Difference]: With dead ends: 1747 [2024-11-23 23:12:15,819 INFO L226 Difference]: Without dead ends: 999 [2024-11-23 23:12:15,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:12:15,822 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 239 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:15,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1447 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:15,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2024-11-23 23:12:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 957. [2024-11-23 23:12:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 748 states have (on average 1.3596256684491979) internal successors, (1017), 757 states have internal predecessors, (1017), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-23 23:12:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1289 transitions. [2024-11-23 23:12:15,934 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1289 transitions. Word has length 94 [2024-11-23 23:12:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:15,935 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1289 transitions. [2024-11-23 23:12:15,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 23:12:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1289 transitions. [2024-11-23 23:12:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-23 23:12:15,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:15,938 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:15,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:12:15,938 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:15,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1829328304, now seen corresponding path program 1 times [2024-11-23 23:12:15,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:15,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304339087] [2024-11-23 23:12:15,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:15,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 23:12:16,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:16,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304339087] [2024-11-23 23:12:16,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304339087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:16,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:16,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:12:16,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068673744] [2024-11-23 23:12:16,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:16,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:12:16,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:16,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:12:16,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:12:16,824 INFO L87 Difference]: Start difference. First operand 957 states and 1289 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 23:12:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:17,165 INFO L93 Difference]: Finished difference Result 1734 states and 2351 transitions. [2024-11-23 23:12:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:12:17,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-23 23:12:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:17,174 INFO L225 Difference]: With dead ends: 1734 [2024-11-23 23:12:17,175 INFO L226 Difference]: Without dead ends: 956 [2024-11-23 23:12:17,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:12:17,178 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 133 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:17,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1527 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:12:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-11-23 23:12:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 946. [2024-11-23 23:12:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 740 states have (on average 1.3581081081081081) internal successors, (1005), 749 states have internal predecessors, (1005), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-23 23:12:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1273 transitions. [2024-11-23 23:12:17,282 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1273 transitions. Word has length 96 [2024-11-23 23:12:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:17,283 INFO L471 AbstractCegarLoop]: Abstraction has 946 states and 1273 transitions. [2024-11-23 23:12:17,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 23:12:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1273 transitions. [2024-11-23 23:12:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-23 23:12:17,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:17,285 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:17,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:12:17,286 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:17,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:17,286 INFO L85 PathProgramCache]: Analyzing trace with hash -367688357, now seen corresponding path program 1 times [2024-11-23 23:12:17,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:17,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922287953] [2024-11-23 23:12:17,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:17,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:12:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922287953] [2024-11-23 23:12:18,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922287953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:18,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:18,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:12:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005463661] [2024-11-23 23:12:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:18,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:12:18,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:18,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:12:18,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:12:18,075 INFO L87 Difference]: Start difference. First operand 946 states and 1273 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 23:12:18,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:18,809 INFO L93 Difference]: Finished difference Result 1805 states and 2415 transitions. [2024-11-23 23:12:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:12:18,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2024-11-23 23:12:18,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:18,823 INFO L225 Difference]: With dead ends: 1805 [2024-11-23 23:12:18,824 INFO L226 Difference]: Without dead ends: 1007 [2024-11-23 23:12:18,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:12:18,827 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 400 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:18,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1229 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:12:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2024-11-23 23:12:18,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 962. [2024-11-23 23:12:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 748 states have (on average 1.3342245989304813) internal successors, (998), 758 states have internal predecessors, (998), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2024-11-23 23:12:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1272 transitions. [2024-11-23 23:12:18,965 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1272 transitions. Word has length 97 [2024-11-23 23:12:18,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:18,966 INFO L471 AbstractCegarLoop]: Abstraction has 962 states and 1272 transitions. [2024-11-23 23:12:18,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 23:12:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1272 transitions. [2024-11-23 23:12:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 23:12:18,968 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:18,968 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:18,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:12:18,968 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:18,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash -929322109, now seen corresponding path program 1 times [2024-11-23 23:12:18,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:18,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923017958] [2024-11-23 23:12:18,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:18,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:12:19,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923017958] [2024-11-23 23:12:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923017958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:19,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:19,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948244836] [2024-11-23 23:12:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:19,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:19,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:19,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:19,101 INFO L87 Difference]: Start difference. First operand 962 states and 1272 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:19,467 INFO L93 Difference]: Finished difference Result 2541 states and 3380 transitions. [2024-11-23 23:12:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:12:19,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2024-11-23 23:12:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:19,482 INFO L225 Difference]: With dead ends: 2541 [2024-11-23 23:12:19,482 INFO L226 Difference]: Without dead ends: 1778 [2024-11-23 23:12:19,486 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 [2024-11-23 23:12:19,487 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 194 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:19,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1114 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:19,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2024-11-23 23:12:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1543. [2024-11-23 23:12:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1186 states have (on average 1.3288364249578415) internal successors, (1576), 1202 states have internal predecessors, (1576), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-23 23:12:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2038 transitions. [2024-11-23 23:12:19,732 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2038 transitions. Word has length 98 [2024-11-23 23:12:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:19,733 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 2038 transitions. [2024-11-23 23:12:19,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2038 transitions. [2024-11-23 23:12:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 23:12:19,737 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:19,737 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:19,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:12:19,738 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:19,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1010941784, now seen corresponding path program 1 times [2024-11-23 23:12:19,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:19,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405772950] [2024-11-23 23:12:19,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:12:20,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:20,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405772950] [2024-11-23 23:12:20,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405772950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:20,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:20,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:12:20,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225302113] [2024-11-23 23:12:20,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:20,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:12:20,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:20,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:12:20,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:12:20,462 INFO L87 Difference]: Start difference. First operand 1543 states and 2038 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:21,324 INFO L93 Difference]: Finished difference Result 3149 states and 4154 transitions. [2024-11-23 23:12:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:12:21,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2024-11-23 23:12:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:21,340 INFO L225 Difference]: With dead ends: 3149 [2024-11-23 23:12:21,341 INFO L226 Difference]: Without dead ends: 1883 [2024-11-23 23:12:21,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:12:21,345 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 506 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:21,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1325 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:12:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2024-11-23 23:12:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1568. [2024-11-23 23:12:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1198 states have (on average 1.32220367278798) internal successors, (1584), 1215 states have internal predecessors, (1584), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-23 23:12:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2062 transitions. [2024-11-23 23:12:21,713 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2062 transitions. Word has length 100 [2024-11-23 23:12:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:21,714 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 2062 transitions. [2024-11-23 23:12:21,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2062 transitions. [2024-11-23 23:12:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 23:12:21,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:21,717 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:21,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:12:21,718 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:21,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:21,719 INFO L85 PathProgramCache]: Analyzing trace with hash 801512900, now seen corresponding path program 1 times [2024-11-23 23:12:21,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:21,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473668704] [2024-11-23 23:12:21,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:21,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:12:21,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:21,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473668704] [2024-11-23 23:12:21,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473668704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:21,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:21,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:21,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636320738] [2024-11-23 23:12:21,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:21,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:21,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:21,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:21,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:21,882 INFO L87 Difference]: Start difference. First operand 1568 states and 2062 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:22,330 INFO L93 Difference]: Finished difference Result 3910 states and 5174 transitions. [2024-11-23 23:12:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:12:22,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-23 23:12:22,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:22,350 INFO L225 Difference]: With dead ends: 3910 [2024-11-23 23:12:22,350 INFO L226 Difference]: Without dead ends: 2660 [2024-11-23 23:12:22,354 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 [2024-11-23 23:12:22,357 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 200 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:22,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1152 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2024-11-23 23:12:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2457. [2024-11-23 23:12:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 1850 states have (on average 1.3129729729729729) internal successors, (2429), 1877 states have internal predecessors, (2429), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-23 23:12:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3217 transitions. [2024-11-23 23:12:22,745 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3217 transitions. Word has length 102 [2024-11-23 23:12:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:22,746 INFO L471 AbstractCegarLoop]: Abstraction has 2457 states and 3217 transitions. [2024-11-23 23:12:22,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3217 transitions. [2024-11-23 23:12:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 23:12:22,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:22,749 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:22,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:12:22,750 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:22,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:22,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1738074819, now seen corresponding path program 1 times [2024-11-23 23:12:22,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:22,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386747535] [2024-11-23 23:12:22,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:22,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:12:22,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:22,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386747535] [2024-11-23 23:12:22,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386747535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:22,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:22,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:12:22,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274214420] [2024-11-23 23:12:22,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:22,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:12:22,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:22,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:12:22,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:12:22,864 INFO L87 Difference]: Start difference. First operand 2457 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:23,227 INFO L93 Difference]: Finished difference Result 4714 states and 6197 transitions. [2024-11-23 23:12:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:12:23,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-23 23:12:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:23,245 INFO L225 Difference]: With dead ends: 4714 [2024-11-23 23:12:23,245 INFO L226 Difference]: Without dead ends: 2466 [2024-11-23 23:12:23,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:12:23,252 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 3 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:23,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 470 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2024-11-23 23:12:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2460. [2024-11-23 23:12:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 1853 states have (on average 1.3124662709120345) internal successors, (2432), 1880 states have internal predecessors, (2432), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-23 23:12:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3220 transitions. [2024-11-23 23:12:23,621 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3220 transitions. Word has length 102 [2024-11-23 23:12:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:23,622 INFO L471 AbstractCegarLoop]: Abstraction has 2460 states and 3220 transitions. [2024-11-23 23:12:23,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3220 transitions. [2024-11-23 23:12:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 23:12:23,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:23,624 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:23,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:12:23,625 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:23,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:23,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1928006348, now seen corresponding path program 1 times [2024-11-23 23:12:23,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:23,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701156369] [2024-11-23 23:12:23,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:23,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:12:23,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:23,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701156369] [2024-11-23 23:12:23,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701156369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:23,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:23,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:23,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741444013] [2024-11-23 23:12:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:23,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:23,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:23,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:23,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:23,752 INFO L87 Difference]: Start difference. First operand 2460 states and 3220 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:24,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:24,499 INFO L93 Difference]: Finished difference Result 5839 states and 7681 transitions. [2024-11-23 23:12:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:12:24,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-23 23:12:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:24,530 INFO L225 Difference]: With dead ends: 5839 [2024-11-23 23:12:24,531 INFO L226 Difference]: Without dead ends: 3818 [2024-11-23 23:12:24,538 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 [2024-11-23 23:12:24,540 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 193 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:24,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1166 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:24,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2024-11-23 23:12:25,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3381. [2024-11-23 23:12:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 2535 states have (on average 1.3088757396449704) internal successors, (3318), 2572 states have internal predecessors, (3318), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2024-11-23 23:12:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4420 transitions. [2024-11-23 23:12:25,090 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4420 transitions. Word has length 102 [2024-11-23 23:12:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:25,091 INFO L471 AbstractCegarLoop]: Abstraction has 3381 states and 4420 transitions. [2024-11-23 23:12:25,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4420 transitions. [2024-11-23 23:12:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 23:12:25,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:25,094 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:25,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:12:25,095 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:25,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1625051608, now seen corresponding path program 1 times [2024-11-23 23:12:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:25,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606349596] [2024-11-23 23:12:25,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:25,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:12:25,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606349596] [2024-11-23 23:12:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606349596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:25,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:25,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:25,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361770134] [2024-11-23 23:12:25,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:25,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:25,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:25,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:25,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:25,274 INFO L87 Difference]: Start difference. First operand 3381 states and 4420 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:25,758 INFO L93 Difference]: Finished difference Result 6413 states and 8407 transitions. [2024-11-23 23:12:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:25,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2024-11-23 23:12:25,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:25,793 INFO L225 Difference]: With dead ends: 6413 [2024-11-23 23:12:25,793 INFO L226 Difference]: Without dead ends: 3105 [2024-11-23 23:12:25,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:25,802 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 74 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:25,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 731 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2024-11-23 23:12:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 3000. [2024-11-23 23:12:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3000 states, 2231 states have (on average 1.3137606454504707) internal successors, (2931), 2255 states have internal predecessors, (2931), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-23 23:12:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 3935 transitions. [2024-11-23 23:12:26,235 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 3935 transitions. Word has length 103 [2024-11-23 23:12:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:26,235 INFO L471 AbstractCegarLoop]: Abstraction has 3000 states and 3935 transitions. [2024-11-23 23:12:26,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 3935 transitions. [2024-11-23 23:12:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:12:26,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:26,239 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:26,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:12:26,239 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:26,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash 47232556, now seen corresponding path program 1 times [2024-11-23 23:12:26,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:26,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607547538] [2024-11-23 23:12:26,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:26,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:12:26,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:26,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607547538] [2024-11-23 23:12:26,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607547538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:26,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:26,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:12:26,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356691794] [2024-11-23 23:12:26,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:26,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:12:26,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:26,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:12:26,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:12:26,319 INFO L87 Difference]: Start difference. First operand 3000 states and 3935 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:26,826 INFO L93 Difference]: Finished difference Result 5846 states and 7700 transitions. [2024-11-23 23:12:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:12:26,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-11-23 23:12:26,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:26,856 INFO L225 Difference]: With dead ends: 5846 [2024-11-23 23:12:26,856 INFO L226 Difference]: Without dead ends: 3028 [2024-11-23 23:12:26,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:12:26,864 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 4 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:26,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 468 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:26,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2024-11-23 23:12:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 3007. [2024-11-23 23:12:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 2238 states have (on average 1.3127792672028598) internal successors, (2938), 2262 states have internal predecessors, (2938), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-23 23:12:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 3942 transitions. [2024-11-23 23:12:27,325 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 3942 transitions. Word has length 105 [2024-11-23 23:12:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:27,325 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 3942 transitions. [2024-11-23 23:12:27,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 3942 transitions. [2024-11-23 23:12:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:12:27,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:27,328 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:12:27,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:12:27,328 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:27,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2011926456, now seen corresponding path program 1 times [2024-11-23 23:12:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:27,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486813139] [2024-11-23 23:12:27,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:27,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:12:27,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:27,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486813139] [2024-11-23 23:12:27,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486813139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:27,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:27,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:12:27,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210485446] [2024-11-23 23:12:27,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:27,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:12:27,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:27,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:12:27,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:12:27,549 INFO L87 Difference]: Start difference. First operand 3007 states and 3942 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:27,907 INFO L93 Difference]: Finished difference Result 5807 states and 7637 transitions. [2024-11-23 23:12:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:12:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-11-23 23:12:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:27,932 INFO L225 Difference]: With dead ends: 5807 [2024-11-23 23:12:27,932 INFO L226 Difference]: Without dead ends: 2920 [2024-11-23 23:12:27,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:27,943 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 60 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:27,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 723 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2024-11-23 23:12:28,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2764. [2024-11-23 23:12:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2054 states have (on average 1.3120740019474197) internal successors, (2695), 2073 states have internal predecessors, (2695), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2024-11-23 23:12:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3623 transitions. [2024-11-23 23:12:28,351 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3623 transitions. Word has length 105 [2024-11-23 23:12:28,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:28,352 INFO L471 AbstractCegarLoop]: Abstraction has 2764 states and 3623 transitions. [2024-11-23 23:12:28,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:12:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3623 transitions. [2024-11-23 23:12:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-23 23:12:28,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:28,359 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-23 23:12:28,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 23:12:28,359 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:28,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:28,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1482752050, now seen corresponding path program 1 times [2024-11-23 23:12:28,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:28,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860940126] [2024-11-23 23:12:28,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:28,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 23:12:28,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:28,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860940126] [2024-11-23 23:12:28,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860940126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:12:28,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682321217] [2024-11-23 23:12:28,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:28,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:12:28,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:12:28,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:12:28,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:12:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:29,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:12:29,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:12:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-23 23:12:29,245 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:12:29,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682321217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:29,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:12:29,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-23 23:12:29,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130636797] [2024-11-23 23:12:29,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:29,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:12:29,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:29,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:12:29,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:12:29,248 INFO L87 Difference]: Start difference. First operand 2764 states and 3623 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:12:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:29,625 INFO L93 Difference]: Finished difference Result 5197 states and 6855 transitions. [2024-11-23 23:12:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:12:29,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 156 [2024-11-23 23:12:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:29,644 INFO L225 Difference]: With dead ends: 5197 [2024-11-23 23:12:29,644 INFO L226 Difference]: Without dead ends: 2593 [2024-11-23 23:12:29,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:12:29,652 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:29,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 992 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2024-11-23 23:12:29,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2576. [2024-11-23 23:12:29,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2576 states, 1911 states have (on average 1.3087388801674515) internal successors, (2501), 1928 states have internal predecessors, (2501), 435 states have call successors, (435), 229 states have call predecessors, (435), 229 states have return successors, (435), 418 states have call predecessors, (435), 435 states have call successors, (435) [2024-11-23 23:12:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 3371 transitions. [2024-11-23 23:12:29,964 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 3371 transitions. Word has length 156 [2024-11-23 23:12:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:29,964 INFO L471 AbstractCegarLoop]: Abstraction has 2576 states and 3371 transitions. [2024-11-23 23:12:29,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:12:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 3371 transitions. [2024-11-23 23:12:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-23 23:12:29,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:29,970 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:12:29,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:12:30,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 23:12:30,176 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:30,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1022887034, now seen corresponding path program 1 times [2024-11-23 23:12:30,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:30,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111067848] [2024-11-23 23:12:30,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 23:12:31,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:31,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111067848] [2024-11-23 23:12:31,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111067848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:12:31,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874954524] [2024-11-23 23:12:31,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:31,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:12:31,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:12:31,111 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:12:31,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:12:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:31,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 23:12:31,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:12:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 23:12:31,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:12:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 23:12:32,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874954524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:12:32,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:12:32,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-11-23 23:12:32,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816042259] [2024-11-23 23:12:32,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:12:32,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 23:12:32,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:32,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 23:12:32,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:12:32,521 INFO L87 Difference]: Start difference. First operand 2576 states and 3371 transitions. Second operand has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-23 23:12:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:39,657 INFO L93 Difference]: Finished difference Result 7502 states and 9849 transitions. [2024-11-23 23:12:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-23 23:12:39,658 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 158 [2024-11-23 23:12:39,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:39,686 INFO L225 Difference]: With dead ends: 7502 [2024-11-23 23:12:39,686 INFO L226 Difference]: Without dead ends: 5153 [2024-11-23 23:12:39,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=985, Invalid=5495, Unknown=0, NotChecked=0, Total=6480 [2024-11-23 23:12:39,696 INFO L435 NwaCegarLoop]: 630 mSDtfsCounter, 2559 mSDsluCounter, 5347 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 5977 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:39,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 5977 Invalid, 3615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [903 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-23 23:12:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5153 states. [2024-11-23 23:12:40,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5153 to 4499. [2024-11-23 23:12:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 3339 states have (on average 1.3111710092842168) internal successors, (4378), 3368 states have internal predecessors, (4378), 755 states have call successors, (755), 404 states have call predecessors, (755), 404 states have return successors, (755), 726 states have call predecessors, (755), 755 states have call successors, (755) [2024-11-23 23:12:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 5888 transitions. [2024-11-23 23:12:40,479 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 5888 transitions. Word has length 158 [2024-11-23 23:12:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:40,480 INFO L471 AbstractCegarLoop]: Abstraction has 4499 states and 5888 transitions. [2024-11-23 23:12:40,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-23 23:12:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 5888 transitions. [2024-11-23 23:12:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-23 23:12:40,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:40,490 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:12:40,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:12:40,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 23:12:40,694 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:40,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:40,694 INFO L85 PathProgramCache]: Analyzing trace with hash -433770960, now seen corresponding path program 1 times [2024-11-23 23:12:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:40,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102988991] [2024-11-23 23:12:40,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:40,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 23:12:41,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:41,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102988991] [2024-11-23 23:12:41,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102988991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:12:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125330142] [2024-11-23 23:12:41,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:41,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:12:41,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:12:41,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:12:41,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:12:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:41,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-23 23:12:41,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:12:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 23:12:42,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:12:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 23:12:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125330142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:12:43,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:12:43,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 22 [2024-11-23 23:12:43,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644360589] [2024-11-23 23:12:43,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:12:43,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:12:43,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:43,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:12:43,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:12:43,326 INFO L87 Difference]: Start difference. First operand 4499 states and 5888 transitions. Second operand has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-23 23:12:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:47,275 INFO L93 Difference]: Finished difference Result 10626 states and 13900 transitions. [2024-11-23 23:12:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-23 23:12:47,276 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) Word has length 159 [2024-11-23 23:12:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:47,317 INFO L225 Difference]: With dead ends: 10626 [2024-11-23 23:12:47,317 INFO L226 Difference]: Without dead ends: 6373 [2024-11-23 23:12:47,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=851, Invalid=2455, Unknown=0, NotChecked=0, Total=3306 [2024-11-23 23:12:47,331 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 1974 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:47,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 2634 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:12:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6373 states. [2024-11-23 23:12:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6373 to 6061. [2024-11-23 23:12:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 4495 states have (on average 1.3036707452725251) internal successors, (5860), 4535 states have internal predecessors, (5860), 1012 states have call successors, (1012), 553 states have call predecessors, (1012), 553 states have return successors, (1012), 972 states have call predecessors, (1012), 1012 states have call successors, (1012) [2024-11-23 23:12:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 7884 transitions. [2024-11-23 23:12:48,591 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 7884 transitions. Word has length 159 [2024-11-23 23:12:48,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:48,593 INFO L471 AbstractCegarLoop]: Abstraction has 6061 states and 7884 transitions. [2024-11-23 23:12:48,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-23 23:12:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 7884 transitions. [2024-11-23 23:12:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-23 23:12:48,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:48,609 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:12:48,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:12:48,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:12:48,810 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:48,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:48,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2138901226, now seen corresponding path program 1 times [2024-11-23 23:12:48,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:48,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120658292] [2024-11-23 23:12:48,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:48,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-23 23:12:49,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:49,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120658292] [2024-11-23 23:12:49,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120658292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:49,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:49,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:12:49,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020255783] [2024-11-23 23:12:49,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:49,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:12:49,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:49,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:12:49,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:12:49,247 INFO L87 Difference]: Start difference. First operand 6061 states and 7884 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:12:51,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:51,866 INFO L93 Difference]: Finished difference Result 17771 states and 23180 transitions. [2024-11-23 23:12:51,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:12:51,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 161 [2024-11-23 23:12:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:51,941 INFO L225 Difference]: With dead ends: 17771 [2024-11-23 23:12:51,942 INFO L226 Difference]: Without dead ends: 12016 [2024-11-23 23:12:51,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:12:51,960 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 216 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:51,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2500 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:12:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2024-11-23 23:12:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 8545. [2024-11-23 23:12:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 6283 states have (on average 1.30208499124622) internal successors, (8181), 6341 states have internal predecessors, (8181), 1476 states have call successors, (1476), 785 states have call predecessors, (1476), 785 states have return successors, (1476), 1418 states have call predecessors, (1476), 1476 states have call successors, (1476) [2024-11-23 23:12:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 11133 transitions. [2024-11-23 23:12:53,582 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 11133 transitions. Word has length 161 [2024-11-23 23:12:53,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:53,583 INFO L471 AbstractCegarLoop]: Abstraction has 8545 states and 11133 transitions. [2024-11-23 23:12:53,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:12:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 11133 transitions. [2024-11-23 23:12:53,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-23 23:12:53,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:53,598 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:12:53,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 23:12:53,598 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:53,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:53,599 INFO L85 PathProgramCache]: Analyzing trace with hash -816805592, now seen corresponding path program 1 times [2024-11-23 23:12:53,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:53,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349641858] [2024-11-23 23:12:53,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:53,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-23 23:12:54,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:54,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349641858] [2024-11-23 23:12:54,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349641858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:12:54,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134415304] [2024-11-23 23:12:54,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:54,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:12:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:12:54,666 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:12:54,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:12:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:54,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-23 23:12:54,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:12:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 59 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 23:12:55,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:12:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 23:12:57,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134415304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:12:57,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:12:57,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 9] total 27 [2024-11-23 23:12:57,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038202786] [2024-11-23 23:12:57,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:12:57,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 23:12:57,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:57,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 23:12:57,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-11-23 23:12:57,215 INFO L87 Difference]: Start difference. First operand 8545 states and 11133 transitions. Second operand has 27 states, 26 states have (on average 9.884615384615385) internal successors, (257), 25 states have internal predecessors, (257), 8 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 8 states have call successors, (35) [2024-11-23 23:13:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:13:03,219 INFO L93 Difference]: Finished difference Result 23864 states and 31018 transitions. [2024-11-23 23:13:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-23 23:13:03,220 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 9.884615384615385) internal successors, (257), 25 states have internal predecessors, (257), 8 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 8 states have call successors, (35) Word has length 161 [2024-11-23 23:13:03,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:13:03,294 INFO L225 Difference]: With dead ends: 23864 [2024-11-23 23:13:03,294 INFO L226 Difference]: Without dead ends: 15574 [2024-11-23 23:13:03,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=549, Invalid=3233, Unknown=0, NotChecked=0, Total=3782 [2024-11-23 23:13:03,312 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 1587 mSDsluCounter, 5490 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 5928 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:13:03,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 5928 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 23:13:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15574 states. [2024-11-23 23:13:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15574 to 10282. [2024-11-23 23:13:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10282 states, 7550 states have (on average 1.299867549668874) internal successors, (9814), 7625 states have internal predecessors, (9814), 1770 states have call successors, (1770), 961 states have call predecessors, (1770), 961 states have return successors, (1770), 1695 states have call predecessors, (1770), 1770 states have call successors, (1770) [2024-11-23 23:13:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10282 states to 10282 states and 13354 transitions. [2024-11-23 23:13:05,339 INFO L78 Accepts]: Start accepts. Automaton has 10282 states and 13354 transitions. Word has length 161 [2024-11-23 23:13:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:13:05,340 INFO L471 AbstractCegarLoop]: Abstraction has 10282 states and 13354 transitions. [2024-11-23 23:13:05,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 9.884615384615385) internal successors, (257), 25 states have internal predecessors, (257), 8 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 8 states have call successors, (35) [2024-11-23 23:13:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10282 states and 13354 transitions. [2024-11-23 23:13:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:13:05,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:13:05,352 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:13:05,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:13:05,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:13:05,553 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:13:05,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:13:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash -617720995, now seen corresponding path program 1 times [2024-11-23 23:13:05,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:13:05,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264717154] [2024-11-23 23:13:05,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:05,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:13:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-23 23:13:06,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:13:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264717154] [2024-11-23 23:13:06,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264717154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:13:06,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820075791] [2024-11-23 23:13:06,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:06,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:13:06,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:13:06,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:13:06,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:13:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:06,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 23:13:06,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:13:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 71 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 23:13:07,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:13:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-23 23:13:08,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820075791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:13:08,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:13:08,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2024-11-23 23:13:08,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703442608] [2024-11-23 23:13:08,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:13:08,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 23:13:08,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:13:08,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 23:13:08,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:13:08,070 INFO L87 Difference]: Start difference. First operand 10282 states and 13354 transitions. Second operand has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 10 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-23 23:13:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:13:13,858 INFO L93 Difference]: Finished difference Result 25966 states and 33777 transitions. [2024-11-23 23:13:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-23 23:13:13,859 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 10 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 170 [2024-11-23 23:13:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:13:13,940 INFO L225 Difference]: With dead ends: 25966 [2024-11-23 23:13:13,940 INFO L226 Difference]: Without dead ends: 15936 [2024-11-23 23:13:13,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=750, Invalid=3156, Unknown=0, NotChecked=0, Total=3906 [2024-11-23 23:13:13,963 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 4369 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 1288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4369 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1288 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:13:13,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4369 Valid, 3580 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1288 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:13:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15936 states. [2024-11-23 23:13:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15936 to 14893. [2024-11-23 23:13:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14893 states, 10903 states have (on average 1.3008346326699074) internal successors, (14183), 11018 states have internal predecessors, (14183), 2586 states have call successors, (2586), 1403 states have call predecessors, (2586), 1403 states have return successors, (2586), 2471 states have call predecessors, (2586), 2586 states have call successors, (2586) [2024-11-23 23:13:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14893 states to 14893 states and 19355 transitions. [2024-11-23 23:13:16,714 INFO L78 Accepts]: Start accepts. Automaton has 14893 states and 19355 transitions. Word has length 170 [2024-11-23 23:13:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:13:16,715 INFO L471 AbstractCegarLoop]: Abstraction has 14893 states and 19355 transitions. [2024-11-23 23:13:16,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 10 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-23 23:13:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 14893 states and 19355 transitions. [2024-11-23 23:13:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-23 23:13:16,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:13:16,728 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:13:16,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:13:16,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:13:16,929 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:13:16,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:13:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash -981841377, now seen corresponding path program 1 times [2024-11-23 23:13:16,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:13:16,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134696071] [2024-11-23 23:13:16,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:13:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-23 23:13:17,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:13:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134696071] [2024-11-23 23:13:17,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134696071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:13:17,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593811611] [2024-11-23 23:13:17,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:17,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:13:17,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:13:17,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:13:17,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:13:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:18,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 23:13:18,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:13:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 23:13:18,862 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:13:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-23 23:13:19,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593811611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:13:19,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:13:19,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 18 [2024-11-23 23:13:19,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012967530] [2024-11-23 23:13:19,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:13:19,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:13:19,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:13:19,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:13:19,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:13:19,442 INFO L87 Difference]: Start difference. First operand 14893 states and 19355 transitions. Second operand has 18 states, 18 states have (on average 13.333333333333334) internal successors, (240), 18 states have internal predecessors, (240), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2024-11-23 23:13:25,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:13:25,260 INFO L93 Difference]: Finished difference Result 36856 states and 48048 transitions. [2024-11-23 23:13:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-23 23:13:25,261 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.333333333333334) internal successors, (240), 18 states have internal predecessors, (240), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 171 [2024-11-23 23:13:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:13:25,358 INFO L225 Difference]: With dead ends: 36856 [2024-11-23 23:13:25,358 INFO L226 Difference]: Without dead ends: 22243 [2024-11-23 23:13:25,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 343 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=431, Invalid=1731, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 23:13:25,393 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 1743 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:13:25,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 2479 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:13:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22243 states. [2024-11-23 23:13:29,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22243 to 21992. [2024-11-23 23:13:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21992 states, 16185 states have (on average 1.3016991041087427) internal successors, (21068), 16349 states have internal predecessors, (21068), 3752 states have call successors, (3752), 2054 states have call predecessors, (3752), 2054 states have return successors, (3752), 3588 states have call predecessors, (3752), 3752 states have call successors, (3752) [2024-11-23 23:13:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21992 states to 21992 states and 28572 transitions. [2024-11-23 23:13:29,372 INFO L78 Accepts]: Start accepts. Automaton has 21992 states and 28572 transitions. Word has length 171 [2024-11-23 23:13:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:13:29,373 INFO L471 AbstractCegarLoop]: Abstraction has 21992 states and 28572 transitions. [2024-11-23 23:13:29,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.333333333333334) internal successors, (240), 18 states have internal predecessors, (240), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2024-11-23 23:13:29,374 INFO L276 IsEmpty]: Start isEmpty. Operand 21992 states and 28572 transitions. [2024-11-23 23:13:29,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-23 23:13:29,382 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:13:29,383 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:13:29,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:13:29,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-23 23:13:29,585 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:13:29,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:13:29,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1626071912, now seen corresponding path program 1 times [2024-11-23 23:13:29,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:13:29,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489885724] [2024-11-23 23:13:29,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:29,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:13:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-23 23:13:30,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:13:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489885724] [2024-11-23 23:13:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489885724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:13:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499078830] [2024-11-23 23:13:30,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:30,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:13:30,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:13:30,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:13:30,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:13:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:30,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:13:30,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:13:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-23 23:13:31,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:13:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-23 23:13:31,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499078830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:13:31,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:13:31,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-11-23 23:13:31,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536538338] [2024-11-23 23:13:31,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:13:31,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:13:31,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:13:31,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:13:31,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:13:31,155 INFO L87 Difference]: Start difference. First operand 21992 states and 28572 transitions. Second operand has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-23 23:13:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:13:37,500 INFO L93 Difference]: Finished difference Result 44178 states and 57352 transitions. [2024-11-23 23:13:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 23:13:37,501 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 171 [2024-11-23 23:13:37,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:13:37,628 INFO L225 Difference]: With dead ends: 44178 [2024-11-23 23:13:37,628 INFO L226 Difference]: Without dead ends: 22401 [2024-11-23 23:13:37,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=1311, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 23:13:37,672 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1270 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:13:37,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 2962 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:13:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22401 states. [2024-11-23 23:13:42,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22401 to 21997. [2024-11-23 23:13:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21997 states, 16190 states have (on average 1.3013588634959852) internal successors, (21069), 16354 states have internal predecessors, (21069), 3752 states have call successors, (3752), 2054 states have call predecessors, (3752), 2054 states have return successors, (3752), 3588 states have call predecessors, (3752), 3752 states have call successors, (3752) [2024-11-23 23:13:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21997 states to 21997 states and 28573 transitions. [2024-11-23 23:13:42,127 INFO L78 Accepts]: Start accepts. Automaton has 21997 states and 28573 transitions. Word has length 171 [2024-11-23 23:13:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:13:42,127 INFO L471 AbstractCegarLoop]: Abstraction has 21997 states and 28573 transitions. [2024-11-23 23:13:42,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-23 23:13:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 21997 states and 28573 transitions. [2024-11-23 23:13:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:13:42,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:13:42,134 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:13:42,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:13:42,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-23 23:13:42,334 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:13:42,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:13:42,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1925185394, now seen corresponding path program 1 times [2024-11-23 23:13:42,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:13:42,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805753433] [2024-11-23 23:13:42,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:42,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:13:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-23 23:13:43,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:13:43,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805753433] [2024-11-23 23:13:43,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805753433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:13:43,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264369843] [2024-11-23 23:13:43,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:43,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:13:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:13:43,635 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:13:43,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:13:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:43,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:13:43,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:13:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:13:44,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:13:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-23 23:13:44,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264369843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:13:44,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:13:44,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 20 [2024-11-23 23:13:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856426174] [2024-11-23 23:13:44,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:13:44,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:13:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:13:44,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:13:44,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:13:44,519 INFO L87 Difference]: Start difference. First operand 21997 states and 28573 transitions. Second operand has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-11-23 23:13:51,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:13:51,132 INFO L93 Difference]: Finished difference Result 45995 states and 59760 transitions. [2024-11-23 23:13:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 23:13:51,133 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) Word has length 179 [2024-11-23 23:13:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:13:51,263 INFO L225 Difference]: With dead ends: 45995 [2024-11-23 23:13:51,263 INFO L226 Difference]: Without dead ends: 24318 [2024-11-23 23:13:51,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=396, Invalid=1860, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 23:13:51,314 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 1303 mSDsluCounter, 4077 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 4605 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:13:51,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 4605 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:13:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24318 states. [2024-11-23 23:13:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24318 to 21959. [2024-11-23 23:13:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21959 states, 16191 states have (on average 1.300599098264468) internal successors, (21058), 16355 states have internal predecessors, (21058), 3717 states have call successors, (3717), 2050 states have call predecessors, (3717), 2050 states have return successors, (3717), 3553 states have call predecessors, (3717), 3717 states have call successors, (3717) [2024-11-23 23:13:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21959 states to 21959 states and 28492 transitions. [2024-11-23 23:13:55,841 INFO L78 Accepts]: Start accepts. Automaton has 21959 states and 28492 transitions. Word has length 179 [2024-11-23 23:13:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:13:55,842 INFO L471 AbstractCegarLoop]: Abstraction has 21959 states and 28492 transitions. [2024-11-23 23:13:55,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-11-23 23:13:55,842 INFO L276 IsEmpty]: Start isEmpty. Operand 21959 states and 28492 transitions. [2024-11-23 23:13:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:13:55,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:13:55,848 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:13:55,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:13:56,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-23 23:13:56,048 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:13:56,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:13:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1257909151, now seen corresponding path program 1 times [2024-11-23 23:13:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:13:56,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655584505] [2024-11-23 23:13:56,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:13:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-23 23:13:56,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:13:56,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655584505] [2024-11-23 23:13:56,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655584505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:13:56,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271309232] [2024-11-23 23:13:56,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:56,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:13:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:13:56,700 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:13:56,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:13:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:56,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-23 23:13:56,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:13:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:13:57,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:13:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-23 23:13:57,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271309232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:13:57,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:13:57,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 20 [2024-11-23 23:13:57,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451423154] [2024-11-23 23:13:57,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:13:57,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:13:57,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:13:57,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:13:57,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:13:57,951 INFO L87 Difference]: Start difference. First operand 21959 states and 28492 transitions. Second operand has 20 states, 20 states have (on average 12.7) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2024-11-23 23:14:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:14:05,253 INFO L93 Difference]: Finished difference Result 44957 states and 58392 transitions. [2024-11-23 23:14:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 23:14:05,254 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.7) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) Word has length 179 [2024-11-23 23:14:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:14:05,370 INFO L225 Difference]: With dead ends: 44957 [2024-11-23 23:14:05,371 INFO L226 Difference]: Without dead ends: 23318 [2024-11-23 23:14:05,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=388, Invalid=1334, Unknown=0, NotChecked=0, Total=1722 [2024-11-23 23:14:05,417 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 1640 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:14:05,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 2835 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:14:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23318 states. [2024-11-23 23:14:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23318 to 23219. [2024-11-23 23:14:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23219 states, 17096 states have (on average 1.2994267664950865) internal successors, (22215), 17270 states have internal predecessors, (22215), 3950 states have call successors, (3950), 2172 states have call predecessors, (3950), 2172 states have return successors, (3950), 3776 states have call predecessors, (3950), 3950 states have call successors, (3950) [2024-11-23 23:14:10,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23219 states to 23219 states and 30115 transitions. [2024-11-23 23:14:10,755 INFO L78 Accepts]: Start accepts. Automaton has 23219 states and 30115 transitions. Word has length 179 [2024-11-23 23:14:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:14:10,756 INFO L471 AbstractCegarLoop]: Abstraction has 23219 states and 30115 transitions. [2024-11-23 23:14:10,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.7) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2024-11-23 23:14:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 23219 states and 30115 transitions. [2024-11-23 23:14:10,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:14:10,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:14:10,763 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:14:10,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:14:10,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:14:10,963 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:14:10,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:14:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1691638237, now seen corresponding path program 1 times [2024-11-23 23:14:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:14:10,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421444410] [2024-11-23 23:14:10,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:14:10,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:14:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:14:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 23:14:11,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:14:11,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421444410] [2024-11-23 23:14:11,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421444410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:14:11,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611519678] [2024-11-23 23:14:11,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:14:11,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:14:11,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:14:11,948 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:14:11,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2242d8c0-e5c9-4561-a52d-6580f2502ecd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:14:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:14:12,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-23 23:14:12,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:14:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:14:12,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:14:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-23 23:14:12,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611519678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:14:12,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:14:12,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 9] total 22 [2024-11-23 23:14:12,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82961109] [2024-11-23 23:14:12,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:14:12,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:14:12,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:14:12,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:14:12,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:14:12,799 INFO L87 Difference]: Start difference. First operand 23219 states and 30115 transitions. Second operand has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 17 states have internal predecessors, (179), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32)