./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.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_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/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_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/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_8cab41aa-6b8d-4da1-bae6-6005889f0cce/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 52f795f47ad9dd0b1b0499f649b5f623fed211e53433ed6d87534c63dbfae98b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:59:55,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:59:56,108 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:59:56,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:59:56,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:59:56,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:59:56,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:59:56,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:59:56,157 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:59:56,158 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:59:56,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:59:56,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:59:56,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:59:56,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:59:56,159 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:59:56,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:59:56,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:59:56,160 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:59:56,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:59:56,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:59:56,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:59:56,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:59:56,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:59:56,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:59:56,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:59:56,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:59:56,161 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:59:56,162 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:59:56,162 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:59:56,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:59:56,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:59:56,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:59:56,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:59:56,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:59:56,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:59:56,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:59:56,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:59:56,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:59:56,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:59:56,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:59:56,164 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:59:56,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:59:56,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:59:56,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:59:56,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:59:56,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:59:56,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:59:56,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:59:56,166 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_8cab41aa-6b8d-4da1-bae6-6005889f0cce/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 -> 52f795f47ad9dd0b1b0499f649b5f623fed211e53433ed6d87534c63dbfae98b [2024-11-24 00:59:56,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:59:56,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:59:56,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:59:56,549 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:59:56,551 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:59:56,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c [2024-11-24 01:00:00,452 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/data/0047aee96/7b993b2e666f4e4287926fd2534a6605/FLAG2a3ace62a [2024-11-24 01:00:00,866 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:00:00,867 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c [2024-11-24 01:00:00,881 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/data/0047aee96/7b993b2e666f4e4287926fd2534a6605/FLAG2a3ace62a [2024-11-24 01:00:00,899 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/data/0047aee96/7b993b2e666f4e4287926fd2534a6605 [2024-11-24 01:00:00,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:00:00,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:00:00,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:00:00,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:00:00,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:00:00,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:00:00" (1/1) ... [2024-11-24 01:00:00,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2961b93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:00, skipping insertion in model container [2024-11-24 01:00:00,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:00:00" (1/1) ... [2024-11-24 01:00:00,943 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:00:01,223 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_8cab41aa-6b8d-4da1-bae6-6005889f0cce/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c[8305,8318] [2024-11-24 01:00:01,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:00:01,249 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:00:01,312 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_8cab41aa-6b8d-4da1-bae6-6005889f0cce/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c[8305,8318] [2024-11-24 01:00:01,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:00:01,334 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:00:01,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01 WrapperNode [2024-11-24 01:00:01,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:00:01,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:00:01,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:00:01,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:00:01,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,401 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 277 [2024-11-24 01:00:01,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:00:01,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:00:01,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:00:01,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:00:01,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,456 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:00:01,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,464 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:00:01,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:00:01,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:00:01,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:00:01,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (1/1) ... [2024-11-24 01:00:01,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:00:01,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:01,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:00:01,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:00:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:00:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:00:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:00:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:00:01,728 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:00:01,731 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:00:02,312 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-24 01:00:02,312 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:00:02,326 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:00:02,327 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:00:02,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:00:02 BoogieIcfgContainer [2024-11-24 01:00:02,328 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:00:02,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:00:02,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:00:02,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:00:02,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:00:00" (1/3) ... [2024-11-24 01:00:02,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71881368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:00:02, skipping insertion in model container [2024-11-24 01:00:02,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:00:01" (2/3) ... [2024-11-24 01:00:02,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71881368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:00:02, skipping insertion in model container [2024-11-24 01:00:02,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:00:02" (3/3) ... [2024-11-24 01:00:02,341 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c [2024-11-24 01:00:02,363 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:00:02,365 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c that has 1 procedures, 71 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:00:02,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:00:02,460 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;@20abd25e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:00:02,460 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:00:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 69 states have (on average 1.7246376811594204) internal successors, (119), 70 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-24 01:00:02,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:02,476 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] [2024-11-24 01:00:02,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:02,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2021273361, now seen corresponding path program 1 times [2024-11-24 01:00:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:02,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559249258] [2024-11-24 01:00:02,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:02,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:02,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559249258] [2024-11-24 01:00:02,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559249258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:02,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:02,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:00:02,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366623601] [2024-11-24 01:00:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:02,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:00:02,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:02,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:00:02,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:00:02,828 INFO L87 Difference]: Start difference. First operand has 71 states, 69 states have (on average 1.7246376811594204) internal successors, (119), 70 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:02,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:02,857 INFO L93 Difference]: Finished difference Result 110 states and 183 transitions. [2024-11-24 01:00:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:00:02,860 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-24 01:00:02,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:02,871 INFO L225 Difference]: With dead ends: 110 [2024-11-24 01:00:02,871 INFO L226 Difference]: Without dead ends: 67 [2024-11-24 01:00:02,875 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 [2024-11-24 01:00:02,883 INFO L435 NwaCegarLoop]: 112 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, 112 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 [2024-11-24 01:00:02,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-24 01:00:02,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-24 01:00:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.696969696969697) internal successors, (112), 66 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 112 transitions. [2024-11-24 01:00:02,917 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 112 transitions. Word has length 21 [2024-11-24 01:00:02,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:02,917 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 112 transitions. [2024-11-24 01:00:02,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:02,918 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 112 transitions. [2024-11-24 01:00:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-24 01:00:02,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:02,919 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] [2024-11-24 01:00:02,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:00:02,919 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:02,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:02,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1000205007, now seen corresponding path program 1 times [2024-11-24 01:00:02,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:02,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820312919] [2024-11-24 01:00:02,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:02,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:03,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820312919] [2024-11-24 01:00:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820312919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:03,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:03,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:00:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023139182] [2024-11-24 01:00:03,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:03,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:00:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:03,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:00:03,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:00:03,251 INFO L87 Difference]: Start difference. First operand 67 states and 112 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:03,350 INFO L93 Difference]: Finished difference Result 109 states and 176 transitions. [2024-11-24 01:00:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:00:03,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-24 01:00:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:03,354 INFO L225 Difference]: With dead ends: 109 [2024-11-24 01:00:03,354 INFO L226 Difference]: Without dead ends: 67 [2024-11-24 01:00:03,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:00:03,355 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:03,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:00:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-24 01:00:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-24 01:00:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2024-11-24 01:00:03,366 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 21 [2024-11-24 01:00:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:03,366 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2024-11-24 01:00:03,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2024-11-24 01:00:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-24 01:00:03,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:03,367 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:03,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:00:03,370 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:03,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:03,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1621611306, now seen corresponding path program 1 times [2024-11-24 01:00:03,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:03,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590995690] [2024-11-24 01:00:03,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:03,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:03,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590995690] [2024-11-24 01:00:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590995690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:03,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:03,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:00:03,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352351224] [2024-11-24 01:00:03,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:03,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:00:03,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:03,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:00:03,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:00:03,641 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:03,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:03,941 INFO L93 Difference]: Finished difference Result 371 states and 569 transitions. [2024-11-24 01:00:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:00:03,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-24 01:00:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:03,947 INFO L225 Difference]: With dead ends: 371 [2024-11-24 01:00:03,947 INFO L226 Difference]: Without dead ends: 333 [2024-11-24 01:00:03,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:00:03,949 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 576 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:03,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 656 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:00:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-24 01:00:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 103. [2024-11-24 01:00:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4313725490196079) internal successors, (146), 102 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 146 transitions. [2024-11-24 01:00:03,981 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 146 transitions. Word has length 43 [2024-11-24 01:00:03,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:03,982 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 146 transitions. [2024-11-24 01:00:03,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:03,982 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 146 transitions. [2024-11-24 01:00:03,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-24 01:00:03,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:03,983 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:03,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:00:03,984 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:03,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:03,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2120362406, now seen corresponding path program 1 times [2024-11-24 01:00:03,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:03,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769256219] [2024-11-24 01:00:03,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:03,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:04,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:04,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769256219] [2024-11-24 01:00:04,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769256219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:04,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:04,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:00:04,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954854453] [2024-11-24 01:00:04,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:04,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:00:04,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:04,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:00:04,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:00:04,225 INFO L87 Difference]: Start difference. First operand 103 states and 146 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:04,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:04,267 INFO L93 Difference]: Finished difference Result 240 states and 361 transitions. [2024-11-24 01:00:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:00:04,268 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-24 01:00:04,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:04,270 INFO L225 Difference]: With dead ends: 240 [2024-11-24 01:00:04,270 INFO L226 Difference]: Without dead ends: 166 [2024-11-24 01:00:04,270 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 [2024-11-24 01:00:04,271 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:04,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 138 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-24 01:00:04,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2024-11-24 01:00:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.4658385093167703) internal successors, (236), 161 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 236 transitions. [2024-11-24 01:00:04,289 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 236 transitions. Word has length 45 [2024-11-24 01:00:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:04,289 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 236 transitions. [2024-11-24 01:00:04,289 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 236 transitions. [2024-11-24 01:00:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-24 01:00:04,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:04,291 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:04,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:00:04,291 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:04,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2053868894, now seen corresponding path program 1 times [2024-11-24 01:00:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:04,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369797690] [2024-11-24 01:00:04,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:04,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369797690] [2024-11-24 01:00:04,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369797690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:04,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:04,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:00:04,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576295165] [2024-11-24 01:00:04,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:04,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:00:04,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:04,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:00:04,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:00:04,767 INFO L87 Difference]: Start difference. First operand 162 states and 236 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:04,964 INFO L93 Difference]: Finished difference Result 297 states and 444 transitions. [2024-11-24 01:00:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:00:04,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-24 01:00:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:04,967 INFO L225 Difference]: With dead ends: 297 [2024-11-24 01:00:04,967 INFO L226 Difference]: Without dead ends: 164 [2024-11-24 01:00:04,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:00:04,969 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 180 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:04,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 251 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:00:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-24 01:00:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2024-11-24 01:00:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.453416149068323) internal successors, (234), 161 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 234 transitions. [2024-11-24 01:00:04,986 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 234 transitions. Word has length 45 [2024-11-24 01:00:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:04,987 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 234 transitions. [2024-11-24 01:00:04,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 234 transitions. [2024-11-24 01:00:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-24 01:00:04,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:04,990 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:04,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:00:04,990 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:04,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:04,991 INFO L85 PathProgramCache]: Analyzing trace with hash 339850577, now seen corresponding path program 1 times [2024-11-24 01:00:04,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:04,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043746702] [2024-11-24 01:00:04,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:04,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:05,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:05,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043746702] [2024-11-24 01:00:05,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043746702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:05,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:05,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:00:05,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883520208] [2024-11-24 01:00:05,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:05,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:00:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:05,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:00:05,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:00:05,611 INFO L87 Difference]: Start difference. First operand 162 states and 234 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:05,709 INFO L93 Difference]: Finished difference Result 170 states and 243 transitions. [2024-11-24 01:00:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:00:05,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-24 01:00:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:05,712 INFO L225 Difference]: With dead ends: 170 [2024-11-24 01:00:05,712 INFO L226 Difference]: Without dead ends: 168 [2024-11-24 01:00:05,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:00:05,716 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:05,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 568 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:00:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-24 01:00:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-24 01:00:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.4311377245508983) internal successors, (239), 167 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 239 transitions. [2024-11-24 01:00:05,735 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 239 transitions. Word has length 46 [2024-11-24 01:00:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:05,736 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 239 transitions. [2024-11-24 01:00:05,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 239 transitions. [2024-11-24 01:00:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-24 01:00:05,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:05,738 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:05,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:00:05,739 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:05,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash -473969054, now seen corresponding path program 1 times [2024-11-24 01:00:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122686302] [2024-11-24 01:00:05,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:05,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122686302] [2024-11-24 01:00:05,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122686302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:05,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:05,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:00:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342739438] [2024-11-24 01:00:05,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:05,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:00:05,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:05,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:00:05,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:00:05,865 INFO L87 Difference]: Start difference. First operand 168 states and 239 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:05,902 INFO L93 Difference]: Finished difference Result 430 states and 631 transitions. [2024-11-24 01:00:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:00:05,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-24 01:00:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:05,906 INFO L225 Difference]: With dead ends: 430 [2024-11-24 01:00:05,907 INFO L226 Difference]: Without dead ends: 291 [2024-11-24 01:00:05,908 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 [2024-11-24 01:00:05,911 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 48 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:05,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 191 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-24 01:00:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2024-11-24 01:00:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.4444444444444444) internal successors, (416), 288 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 416 transitions. [2024-11-24 01:00:05,954 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 416 transitions. Word has length 47 [2024-11-24 01:00:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:05,954 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 416 transitions. [2024-11-24 01:00:05,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 416 transitions. [2024-11-24 01:00:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-24 01:00:05,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:05,960 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:05,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:00:05,960 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:05,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:05,961 INFO L85 PathProgramCache]: Analyzing trace with hash -908504990, now seen corresponding path program 1 times [2024-11-24 01:00:05,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:05,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794778582] [2024-11-24 01:00:05,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:05,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:06,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:06,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794778582] [2024-11-24 01:00:06,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794778582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:06,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:06,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:00:06,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706687153] [2024-11-24 01:00:06,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:06,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:00:06,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:06,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:00:06,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:00:06,083 INFO L87 Difference]: Start difference. First operand 289 states and 416 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:06,124 INFO L93 Difference]: Finished difference Result 777 states and 1134 transitions. [2024-11-24 01:00:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:00:06,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-24 01:00:06,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:06,129 INFO L225 Difference]: With dead ends: 777 [2024-11-24 01:00:06,131 INFO L226 Difference]: Without dead ends: 517 [2024-11-24 01:00:06,132 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 [2024-11-24 01:00:06,133 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 44 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:06,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 187 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:06,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-24 01:00:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 515. [2024-11-24 01:00:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.4357976653696498) internal successors, (738), 514 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 738 transitions. [2024-11-24 01:00:06,180 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 738 transitions. Word has length 47 [2024-11-24 01:00:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:06,182 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 738 transitions. [2024-11-24 01:00:06,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 738 transitions. [2024-11-24 01:00:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-24 01:00:06,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:06,186 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:06,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:00:06,186 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:06,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1605529442, now seen corresponding path program 1 times [2024-11-24 01:00:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:06,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801602788] [2024-11-24 01:00:06,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:06,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:06,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801602788] [2024-11-24 01:00:06,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801602788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:06,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:06,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:00:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356911386] [2024-11-24 01:00:06,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:06,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:00:06,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:06,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:00:06,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:00:06,322 INFO L87 Difference]: Start difference. First operand 515 states and 738 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:06,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:06,394 INFO L93 Difference]: Finished difference Result 1423 states and 2044 transitions. [2024-11-24 01:00:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:00:06,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-24 01:00:06,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:06,404 INFO L225 Difference]: With dead ends: 1423 [2024-11-24 01:00:06,407 INFO L226 Difference]: Without dead ends: 937 [2024-11-24 01:00:06,408 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 [2024-11-24 01:00:06,409 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:06,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 193 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2024-11-24 01:00:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 935. [2024-11-24 01:00:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.411134903640257) internal successors, (1318), 934 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1318 transitions. [2024-11-24 01:00:06,506 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1318 transitions. Word has length 47 [2024-11-24 01:00:06,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:06,507 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1318 transitions. [2024-11-24 01:00:06,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1318 transitions. [2024-11-24 01:00:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 01:00:06,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:06,510 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:06,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:00:06,511 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:06,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:06,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1111100995, now seen corresponding path program 1 times [2024-11-24 01:00:06,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:06,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983474120] [2024-11-24 01:00:06,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:06,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:06,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:06,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983474120] [2024-11-24 01:00:06,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983474120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:06,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:06,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:00:06,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202649124] [2024-11-24 01:00:06,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:06,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:00:06,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:06,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:00:06,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:00:06,646 INFO L87 Difference]: Start difference. First operand 935 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:06,743 INFO L93 Difference]: Finished difference Result 1902 states and 2716 transitions. [2024-11-24 01:00:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:00:06,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-24 01:00:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:06,752 INFO L225 Difference]: With dead ends: 1902 [2024-11-24 01:00:06,752 INFO L226 Difference]: Without dead ends: 1371 [2024-11-24 01:00:06,753 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 [2024-11-24 01:00:06,755 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 47 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:06,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2024-11-24 01:00:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1369. [2024-11-24 01:00:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 1.4035087719298245) internal successors, (1920), 1368 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1920 transitions. [2024-11-24 01:00:06,872 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1920 transitions. Word has length 49 [2024-11-24 01:00:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:06,872 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1920 transitions. [2024-11-24 01:00:06,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1920 transitions. [2024-11-24 01:00:06,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:00:06,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:06,875 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] [2024-11-24 01:00:06,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:00:06,875 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:06,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:06,876 INFO L85 PathProgramCache]: Analyzing trace with hash -870105748, now seen corresponding path program 1 times [2024-11-24 01:00:06,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:06,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819405657] [2024-11-24 01:00:06,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:06,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:00:07,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:07,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819405657] [2024-11-24 01:00:07,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819405657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:07,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:07,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:00:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160641575] [2024-11-24 01:00:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:07,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:00:07,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:07,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:00:07,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:00:07,164 INFO L87 Difference]: Start difference. First operand 1369 states and 1920 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:07,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:07,489 INFO L93 Difference]: Finished difference Result 7019 states and 9877 transitions. [2024-11-24 01:00:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:00:07,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-24 01:00:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:07,518 INFO L225 Difference]: With dead ends: 7019 [2024-11-24 01:00:07,518 INFO L226 Difference]: Without dead ends: 5681 [2024-11-24 01:00:07,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:00:07,523 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 391 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:07,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 434 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:00:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2024-11-24 01:00:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 2705. [2024-11-24 01:00:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2704 states have (on average 1.3994082840236686) internal successors, (3784), 2704 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3784 transitions. [2024-11-24 01:00:07,724 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3784 transitions. Word has length 64 [2024-11-24 01:00:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:07,725 INFO L471 AbstractCegarLoop]: Abstraction has 2705 states and 3784 transitions. [2024-11-24 01:00:07,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3784 transitions. [2024-11-24 01:00:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:00:07,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:07,727 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] [2024-11-24 01:00:07,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:00:07,727 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:07,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1304641684, now seen corresponding path program 1 times [2024-11-24 01:00:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073952510] [2024-11-24 01:00:07,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:07,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:00:07,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:07,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073952510] [2024-11-24 01:00:07,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073952510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:07,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:07,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:00:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644548913] [2024-11-24 01:00:07,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:07,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:00:07,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:07,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:00:07,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:00:07,928 INFO L87 Difference]: Start difference. First operand 2705 states and 3784 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:08,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:08,356 INFO L93 Difference]: Finished difference Result 8355 states and 11741 transitions. [2024-11-24 01:00:08,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:00:08,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-24 01:00:08,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:08,391 INFO L225 Difference]: With dead ends: 8355 [2024-11-24 01:00:08,391 INFO L226 Difference]: Without dead ends: 7017 [2024-11-24 01:00:08,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:00:08,395 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 383 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:08,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 431 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:00:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7017 states. [2024-11-24 01:00:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7017 to 4713. [2024-11-24 01:00:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 1.3921901528013583) internal successors, (6560), 4712 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 6560 transitions. [2024-11-24 01:00:08,695 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 6560 transitions. Word has length 64 [2024-11-24 01:00:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:08,696 INFO L471 AbstractCegarLoop]: Abstraction has 4713 states and 6560 transitions. [2024-11-24 01:00:08,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:08,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 6560 transitions. [2024-11-24 01:00:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:00:08,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:08,700 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] [2024-11-24 01:00:08,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:00:08,700 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:08,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:08,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1209392748, now seen corresponding path program 1 times [2024-11-24 01:00:08,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:08,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514422265] [2024-11-24 01:00:08,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:00:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:08,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514422265] [2024-11-24 01:00:08,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514422265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:08,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:08,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:00:08,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161057530] [2024-11-24 01:00:08,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:08,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:00:08,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:08,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:00:08,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:00:08,907 INFO L87 Difference]: Start difference. First operand 4713 states and 6560 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:09,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:09,246 INFO L93 Difference]: Finished difference Result 9691 states and 13605 transitions. [2024-11-24 01:00:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:00:09,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-24 01:00:09,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:09,321 INFO L225 Difference]: With dead ends: 9691 [2024-11-24 01:00:09,321 INFO L226 Difference]: Without dead ends: 8353 [2024-11-24 01:00:09,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:00:09,324 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 350 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:09,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 483 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:00:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8353 states. [2024-11-24 01:00:09,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8353 to 6049. [2024-11-24 01:00:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6049 states, 6048 states have (on average 1.3928571428571428) internal successors, (8424), 6048 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6049 states to 6049 states and 8424 transitions. [2024-11-24 01:00:09,574 INFO L78 Accepts]: Start accepts. Automaton has 6049 states and 8424 transitions. Word has length 64 [2024-11-24 01:00:09,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:09,575 INFO L471 AbstractCegarLoop]: Abstraction has 6049 states and 8424 transitions. [2024-11-24 01:00:09,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6049 states and 8424 transitions. [2024-11-24 01:00:09,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 01:00:09,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:09,577 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] [2024-11-24 01:00:09,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:00:09,577 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:09,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash 453625415, now seen corresponding path program 1 times [2024-11-24 01:00:09,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:09,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739444746] [2024-11-24 01:00:09,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:09,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:00:09,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:09,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739444746] [2024-11-24 01:00:09,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739444746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:09,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:09,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:00:09,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250968621] [2024-11-24 01:00:09,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:09,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:00:09,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:09,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:00:09,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:00:09,730 INFO L87 Difference]: Start difference. First operand 6049 states and 8424 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:10,114 INFO L93 Difference]: Finished difference Result 10275 states and 14445 transitions. [2024-11-24 01:00:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:00:10,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-24 01:00:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:10,143 INFO L225 Difference]: With dead ends: 10275 [2024-11-24 01:00:10,143 INFO L226 Difference]: Without dead ends: 9313 [2024-11-24 01:00:10,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:00:10,147 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 382 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:10,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 500 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:00:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2024-11-24 01:00:10,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 7009. [2024-11-24 01:00:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7008 states have (on average 1.3961187214611872) internal successors, (9784), 7008 states have internal predecessors, (9784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 9784 transitions. [2024-11-24 01:00:10,506 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 9784 transitions. Word has length 66 [2024-11-24 01:00:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:10,507 INFO L471 AbstractCegarLoop]: Abstraction has 7009 states and 9784 transitions. [2024-11-24 01:00:10,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 9784 transitions. [2024-11-24 01:00:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 01:00:10,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:10,509 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:10,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:00:10,509 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:10,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2206620, now seen corresponding path program 1 times [2024-11-24 01:00:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354244938] [2024-11-24 01:00:10,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:10,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:10,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:10,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354244938] [2024-11-24 01:00:10,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354244938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:10,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:10,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:00:10,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288285769] [2024-11-24 01:00:10,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:10,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:00:10,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:10,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:00:10,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:00:10,618 INFO L87 Difference]: Start difference. First operand 7009 states and 9784 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:10,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:10,754 INFO L93 Difference]: Finished difference Result 12311 states and 17285 transitions. [2024-11-24 01:00:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:00:10,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-24 01:00:10,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:10,769 INFO L225 Difference]: With dead ends: 12311 [2024-11-24 01:00:10,769 INFO L226 Difference]: Without dead ends: 5333 [2024-11-24 01:00:10,776 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 [2024-11-24 01:00:10,777 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 42 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:10,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 195 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5333 states. [2024-11-24 01:00:11,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5333 to 5331. [2024-11-24 01:00:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5331 states, 5330 states have (on average 1.3962476547842402) internal successors, (7442), 5330 states have internal predecessors, (7442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 7442 transitions. [2024-11-24 01:00:11,040 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 7442 transitions. Word has length 66 [2024-11-24 01:00:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:11,040 INFO L471 AbstractCegarLoop]: Abstraction has 5331 states and 7442 transitions. [2024-11-24 01:00:11,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 7442 transitions. [2024-11-24 01:00:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 01:00:11,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:11,043 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] [2024-11-24 01:00:11,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:00:11,043 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:11,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1317089731, now seen corresponding path program 1 times [2024-11-24 01:00:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709297039] [2024-11-24 01:00:11,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:11,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:11,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:11,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709297039] [2024-11-24 01:00:11,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709297039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:11,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:11,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:00:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223124699] [2024-11-24 01:00:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:11,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:00:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:11,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:00:11,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:00:11,192 INFO L87 Difference]: Start difference. First operand 5331 states and 7442 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:11,298 INFO L93 Difference]: Finished difference Result 7975 states and 11140 transitions. [2024-11-24 01:00:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:00:11,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-24 01:00:11,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:11,308 INFO L225 Difference]: With dead ends: 7975 [2024-11-24 01:00:11,309 INFO L226 Difference]: Without dead ends: 2693 [2024-11-24 01:00:11,314 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 [2024-11-24 01:00:11,315 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 37 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:11,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 180 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2024-11-24 01:00:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2691. [2024-11-24 01:00:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 2690 states have (on average 1.3762081784386617) internal successors, (3702), 2690 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:11,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3702 transitions. [2024-11-24 01:00:11,446 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3702 transitions. Word has length 67 [2024-11-24 01:00:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:11,447 INFO L471 AbstractCegarLoop]: Abstraction has 2691 states and 3702 transitions. [2024-11-24 01:00:11,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3702 transitions. [2024-11-24 01:00:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-24 01:00:11,448 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:11,449 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] [2024-11-24 01:00:11,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:00:11,449 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:11,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash 486786415, now seen corresponding path program 1 times [2024-11-24 01:00:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:11,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779650878] [2024-11-24 01:00:11,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:11,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:11,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:11,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779650878] [2024-11-24 01:00:11,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779650878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:11,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:11,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:00:11,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135871963] [2024-11-24 01:00:11,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:11,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:00:11,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:11,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:00:11,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:00:11,629 INFO L87 Difference]: Start difference. First operand 2691 states and 3702 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:11,684 INFO L93 Difference]: Finished difference Result 4015 states and 5530 transitions. [2024-11-24 01:00:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:00:11,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-24 01:00:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:11,689 INFO L225 Difference]: With dead ends: 4015 [2024-11-24 01:00:11,690 INFO L226 Difference]: Without dead ends: 1373 [2024-11-24 01:00:11,693 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 [2024-11-24 01:00:11,693 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:11,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 165 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2024-11-24 01:00:11,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1371. [2024-11-24 01:00:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 1.3532846715328468) internal successors, (1854), 1370 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1854 transitions. [2024-11-24 01:00:11,765 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1854 transitions. Word has length 69 [2024-11-24 01:00:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:11,769 INFO L471 AbstractCegarLoop]: Abstraction has 1371 states and 1854 transitions. [2024-11-24 01:00:11,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1854 transitions. [2024-11-24 01:00:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-24 01:00:11,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:11,771 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] [2024-11-24 01:00:11,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:00:11,772 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:11,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2100202719, now seen corresponding path program 1 times [2024-11-24 01:00:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:11,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793454725] [2024-11-24 01:00:11,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:11,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:11,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793454725] [2024-11-24 01:00:11,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793454725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:00:11,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:00:11,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:00:11,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163554950] [2024-11-24 01:00:11,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:00:11,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:00:11,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:11,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:00:11,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:00:11,944 INFO L87 Difference]: Start difference. First operand 1371 states and 1854 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:11,983 INFO L93 Difference]: Finished difference Result 2035 states and 2758 transitions. [2024-11-24 01:00:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:00:11,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-24 01:00:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:11,986 INFO L225 Difference]: With dead ends: 2035 [2024-11-24 01:00:11,987 INFO L226 Difference]: Without dead ends: 713 [2024-11-24 01:00:11,988 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 [2024-11-24 01:00:11,990 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 31 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:11,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 150 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:00:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-24 01:00:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 711. [2024-11-24 01:00:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.3253521126760563) internal successors, (941), 710 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 941 transitions. [2024-11-24 01:00:12,023 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 941 transitions. Word has length 71 [2024-11-24 01:00:12,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:12,024 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 941 transitions. [2024-11-24 01:00:12,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 941 transitions. [2024-11-24 01:00:12,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-24 01:00:12,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:12,025 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] [2024-11-24 01:00:12,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:00:12,026 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:12,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash 952563539, now seen corresponding path program 1 times [2024-11-24 01:00:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:12,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098893889] [2024-11-24 01:00:12,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:15,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:15,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098893889] [2024-11-24 01:00:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098893889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98504152] [2024-11-24 01:00:15,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:15,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:15,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:15,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:15,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:00:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:15,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 01:00:15,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:00:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:16,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:00:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:18,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98504152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:00:18,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:00:18,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-24 01:00:18,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630152579] [2024-11-24 01:00:18,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:00:18,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-24 01:00:18,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:18,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-24 01:00:18,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:00:18,831 INFO L87 Difference]: Start difference. First operand 711 states and 941 transitions. Second operand has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:21,184 INFO L93 Difference]: Finished difference Result 3607 states and 4842 transitions. [2024-11-24 01:00:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 01:00:21,185 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-24 01:00:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:21,192 INFO L225 Difference]: With dead ends: 3607 [2024-11-24 01:00:21,193 INFO L226 Difference]: Without dead ends: 2945 [2024-11-24 01:00:21,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=582, Invalid=2388, Unknown=0, NotChecked=0, Total=2970 [2024-11-24 01:00:21,197 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 1809 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:21,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 756 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:00:21,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2024-11-24 01:00:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2911. [2024-11-24 01:00:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2910 states have (on average 1.3326460481099656) internal successors, (3878), 2910 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 3878 transitions. [2024-11-24 01:00:21,327 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 3878 transitions. Word has length 73 [2024-11-24 01:00:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:21,328 INFO L471 AbstractCegarLoop]: Abstraction has 2911 states and 3878 transitions. [2024-11-24 01:00:21,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 3878 transitions. [2024-11-24 01:00:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-24 01:00:21,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:21,330 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] [2024-11-24 01:00:21,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:00:21,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:21,533 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:21,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1863570277, now seen corresponding path program 1 times [2024-11-24 01:00:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928344614] [2024-11-24 01:00:21,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:21,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:22,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928344614] [2024-11-24 01:00:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928344614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748770062] [2024-11-24 01:00:22,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:22,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:22,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:22,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:22,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:00:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:22,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 01:00:22,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:00:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:23,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:00:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:24,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748770062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:00:24,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:00:24,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-24 01:00:24,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306391014] [2024-11-24 01:00:24,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:00:24,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:00:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:24,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:00:24,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:00:24,157 INFO L87 Difference]: Start difference. First operand 2911 states and 3878 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:24,970 INFO L93 Difference]: Finished difference Result 8901 states and 11933 transitions. [2024-11-24 01:00:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:00:24,971 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-24 01:00:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:24,986 INFO L225 Difference]: With dead ends: 8901 [2024-11-24 01:00:24,986 INFO L226 Difference]: Without dead ends: 6039 [2024-11-24 01:00:24,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-24 01:00:24,992 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 615 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:24,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 485 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:00:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2024-11-24 01:00:25,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 5947. [2024-11-24 01:00:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5947 states, 5946 states have (on average 1.3163471241170535) internal successors, (7827), 5946 states have internal predecessors, (7827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5947 states to 5947 states and 7827 transitions. [2024-11-24 01:00:25,227 INFO L78 Accepts]: Start accepts. Automaton has 5947 states and 7827 transitions. Word has length 74 [2024-11-24 01:00:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:25,227 INFO L471 AbstractCegarLoop]: Abstraction has 5947 states and 7827 transitions. [2024-11-24 01:00:25,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5947 states and 7827 transitions. [2024-11-24 01:00:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-24 01:00:25,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:25,230 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] [2024-11-24 01:00:25,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:00:25,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:25,430 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:25,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:25,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1952225691, now seen corresponding path program 1 times [2024-11-24 01:00:25,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:25,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716068176] [2024-11-24 01:00:25,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:25,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:25,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716068176] [2024-11-24 01:00:25,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716068176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:25,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432148104] [2024-11-24 01:00:25,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:25,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:25,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:25,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:25,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:00:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:26,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 01:00:26,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:00:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:27,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:00:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:29,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432148104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:00:29,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:00:29,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-11-24 01:00:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655391389] [2024-11-24 01:00:29,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:00:29,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-24 01:00:29,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:29,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-24 01:00:29,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:00:29,573 INFO L87 Difference]: Start difference. First operand 5947 states and 7827 transitions. Second operand has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:34,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:34,257 INFO L93 Difference]: Finished difference Result 18829 states and 24540 transitions. [2024-11-24 01:00:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 01:00:34,258 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-24 01:00:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:34,285 INFO L225 Difference]: With dead ends: 18829 [2024-11-24 01:00:34,285 INFO L226 Difference]: Without dead ends: 12931 [2024-11-24 01:00:34,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=819, Invalid=3213, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 01:00:34,294 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 1853 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:34,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 975 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:00:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12931 states. [2024-11-24 01:00:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12931 to 11259. [2024-11-24 01:00:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11259 states, 11258 states have (on average 1.2909930715935334) internal successors, (14534), 11258 states have internal predecessors, (14534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11259 states to 11259 states and 14534 transitions. [2024-11-24 01:00:34,852 INFO L78 Accepts]: Start accepts. Automaton has 11259 states and 14534 transitions. Word has length 74 [2024-11-24 01:00:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:34,853 INFO L471 AbstractCegarLoop]: Abstraction has 11259 states and 14534 transitions. [2024-11-24 01:00:34,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 11259 states and 14534 transitions. [2024-11-24 01:00:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-24 01:00:34,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:34,856 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] [2024-11-24 01:00:34,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:00:35,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 01:00:35,057 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:35,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:35,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1982171291, now seen corresponding path program 1 times [2024-11-24 01:00:35,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:35,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138242160] [2024-11-24 01:00:35,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:35,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:35,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:35,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138242160] [2024-11-24 01:00:35,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138242160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:35,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177738506] [2024-11-24 01:00:35,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:35,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:35,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:35,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:35,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:00:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:35,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 01:00:35,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:00:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:36,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:00:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:37,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177738506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:00:37,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:00:37,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-24 01:00:37,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939027761] [2024-11-24 01:00:37,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:00:37,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 01:00:37,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:37,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 01:00:37,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:00:37,511 INFO L87 Difference]: Start difference. First operand 11259 states and 14534 transitions. Second operand has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 20 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:38,400 INFO L93 Difference]: Finished difference Result 22953 states and 29741 transitions. [2024-11-24 01:00:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:00:38,401 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 20 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-24 01:00:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:38,430 INFO L225 Difference]: With dead ends: 22953 [2024-11-24 01:00:38,430 INFO L226 Difference]: Without dead ends: 11743 [2024-11-24 01:00:38,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:00:38,442 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 609 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:38,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 596 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:00:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11743 states. [2024-11-24 01:00:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11743 to 10611. [2024-11-24 01:00:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10611 states, 10610 states have (on average 1.2804901036757776) internal successors, (13586), 10610 states have internal predecessors, (13586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10611 states to 10611 states and 13586 transitions. [2024-11-24 01:00:39,024 INFO L78 Accepts]: Start accepts. Automaton has 10611 states and 13586 transitions. Word has length 75 [2024-11-24 01:00:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:39,025 INFO L471 AbstractCegarLoop]: Abstraction has 10611 states and 13586 transitions. [2024-11-24 01:00:39,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 20 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:00:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10611 states and 13586 transitions. [2024-11-24 01:00:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:00:39,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:39,027 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] [2024-11-24 01:00:39,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:00:39,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-24 01:00:39,232 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:39,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash -332355253, now seen corresponding path program 1 times [2024-11-24 01:00:39,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:39,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160542882] [2024-11-24 01:00:39,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:39,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160542882] [2024-11-24 01:00:41,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160542882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359995335] [2024-11-24 01:00:41,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:41,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:41,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:41,225 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:41,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:00:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:41,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-24 01:00:41,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:00:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:44,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:00:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:00:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359995335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:00:48,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:00:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 19] total 57 [2024-11-24 01:00:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871949659] [2024-11-24 01:00:48,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:00:48,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-24 01:00:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:48,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-24 01:00:48,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2888, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 01:00:48,176 INFO L87 Difference]: Start difference. First operand 10611 states and 13586 transitions. Second operand has 57 states, 57 states have (on average 3.6491228070175437) internal successors, (208), 57 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:05,135 INFO L93 Difference]: Finished difference Result 32648 states and 41811 transitions. [2024-11-24 01:02:05,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2024-11-24 01:02:05,136 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.6491228070175437) internal successors, (208), 57 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-24 01:02:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:05,188 INFO L225 Difference]: With dead ends: 32648 [2024-11-24 01:02:05,189 INFO L226 Difference]: Without dead ends: 26374 [2024-11-24 01:02:05,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30104 ImplicationChecksByTransitivity, 72.4s TimeCoverageRelationStatistics Valid=12557, Invalid=68953, Unknown=0, NotChecked=0, Total=81510 [2024-11-24 01:02:05,213 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 6276 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 5048 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6276 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 5241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 5048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:05,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6276 Valid, 4029 Invalid, 5241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 5048 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-24 01:02:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26374 states. [2024-11-24 01:02:06,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26374 to 16959. [2024-11-24 01:02:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16959 states, 16958 states have (on average 1.286767307465503) internal successors, (21821), 16958 states have internal predecessors, (21821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:06,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16959 states to 16959 states and 21821 transitions. [2024-11-24 01:02:06,066 INFO L78 Accepts]: Start accepts. Automaton has 16959 states and 21821 transitions. Word has length 76 [2024-11-24 01:02:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:06,066 INFO L471 AbstractCegarLoop]: Abstraction has 16959 states and 21821 transitions. [2024-11-24 01:02:06,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.6491228070175437) internal successors, (208), 57 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:06,067 INFO L276 IsEmpty]: Start isEmpty. Operand 16959 states and 21821 transitions. [2024-11-24 01:02:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:02:06,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:06,069 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] [2024-11-24 01:02:06,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:02:06,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 01:02:06,275 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:02:06,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:06,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1240018761, now seen corresponding path program 1 times [2024-11-24 01:02:06,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:02:06,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240405978] [2024-11-24 01:02:06,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:06,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:02:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:07,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:02:07,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240405978] [2024-11-24 01:02:07,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240405978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:02:07,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885295027] [2024-11-24 01:02:07,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:07,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:07,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:07,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:07,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:02:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:07,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-24 01:02:07,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:11,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:02:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:20,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885295027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:02:20,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:02:20,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24, 25] total 60 [2024-11-24 01:02:20,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692137431] [2024-11-24 01:02:20,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:02:20,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 01:02:20,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:02:20,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 01:02:20,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=3043, Unknown=0, NotChecked=0, Total=3540 [2024-11-24 01:02:20,108 INFO L87 Difference]: Start difference. First operand 16959 states and 21821 transitions. Second operand has 60 states, 60 states have (on average 3.3333333333333335) internal successors, (200), 60 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:31,351 INFO L93 Difference]: Finished difference Result 28741 states and 36989 transitions. [2024-11-24 01:02:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-24 01:02:31,351 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.3333333333333335) internal successors, (200), 60 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-24 01:02:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:31,393 INFO L225 Difference]: With dead ends: 28741 [2024-11-24 01:02:31,394 INFO L226 Difference]: Without dead ends: 21651 [2024-11-24 01:02:31,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3754 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=2885, Invalid=11157, Unknown=0, NotChecked=0, Total=14042 [2024-11-24 01:02:31,406 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 2069 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:31,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 2002 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 01:02:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21651 states. [2024-11-24 01:02:32,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21651 to 15367. [2024-11-24 01:02:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15366 states have (on average 1.2884940778341794) internal successors, (19799), 15366 states have internal predecessors, (19799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 19799 transitions. [2024-11-24 01:02:32,427 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 19799 transitions. Word has length 77 [2024-11-24 01:02:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:32,427 INFO L471 AbstractCegarLoop]: Abstraction has 15367 states and 19799 transitions. [2024-11-24 01:02:32,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.3333333333333335) internal successors, (200), 60 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 19799 transitions. [2024-11-24 01:02:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:02:32,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:32,429 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] [2024-11-24 01:02:32,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:02:32,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 01:02:32,630 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:02:32,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1034757107, now seen corresponding path program 1 times [2024-11-24 01:02:32,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:02:32,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739189937] [2024-11-24 01:02:32,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:32,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:02:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:35,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:02:35,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739189937] [2024-11-24 01:02:35,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739189937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:02:35,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265925313] [2024-11-24 01:02:35,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:35,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:35,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:35,348 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:35,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:02:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:35,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 01:02:35,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:36,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:02:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265925313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:02:36,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:02:36,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 6] total 34 [2024-11-24 01:02:36,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650483086] [2024-11-24 01:02:36,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:02:36,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 01:02:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:02:36,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 01:02:36,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:02:36,605 INFO L87 Difference]: Start difference. First operand 15367 states and 19799 transitions. Second operand has 34 states, 34 states have (on average 6.4411764705882355) internal successors, (219), 34 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:03:27,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:03:27,870 INFO L93 Difference]: Finished difference Result 73215 states and 93254 transitions. [2024-11-24 01:03:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 265 states. [2024-11-24 01:03:27,871 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.4411764705882355) internal successors, (219), 34 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-24 01:03:27,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:03:27,939 INFO L225 Difference]: With dead ends: 73215 [2024-11-24 01:03:27,939 INFO L226 Difference]: Without dead ends: 57160 [2024-11-24 01:03:27,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38235 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=13236, Invalid=74084, Unknown=0, NotChecked=0, Total=87320 [2024-11-24 01:03:27,960 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 5228 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 8217 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5228 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 8407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 8217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:03:27,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5228 Valid, 2622 Invalid, 8407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 8217 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-24 01:03:27,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57160 states. [2024-11-24 01:03:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57160 to 52090. [2024-11-24 01:03:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52090 states, 52089 states have (on average 1.2543147305573155) internal successors, (65336), 52089 states have internal predecessors, (65336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:03:32,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52090 states to 52090 states and 65336 transitions. [2024-11-24 01:03:32,215 INFO L78 Accepts]: Start accepts. Automaton has 52090 states and 65336 transitions. Word has length 77 [2024-11-24 01:03:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:03:32,215 INFO L471 AbstractCegarLoop]: Abstraction has 52090 states and 65336 transitions. [2024-11-24 01:03:32,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.4411764705882355) internal successors, (219), 34 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:03:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 52090 states and 65336 transitions. [2024-11-24 01:03:32,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-24 01:03:32,217 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:03:32,217 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] [2024-11-24 01:03:32,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:03:32,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 01:03:32,418 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:03:32,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:03:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash -246188991, now seen corresponding path program 1 times [2024-11-24 01:03:32,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:03:32,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604668127] [2024-11-24 01:03:32,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:03:32,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:03:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:03:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:03:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:03:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604668127] [2024-11-24 01:03:35,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604668127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:03:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535595535] [2024-11-24 01:03:35,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:03:35,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:35,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:03:35,293 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:03:35,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:03:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:03:35,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-24 01:03:35,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:03:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:03:41,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:03:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:03:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535595535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:03:45,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:03:45,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 20] total 58 [2024-11-24 01:03:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856937420] [2024-11-24 01:03:45,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:03:45,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-24 01:03:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:03:45,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-24 01:03:45,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=2987, Unknown=0, NotChecked=0, Total=3306 [2024-11-24 01:03:45,824 INFO L87 Difference]: Start difference. First operand 52090 states and 65336 transitions. Second operand has 58 states, 58 states have (on average 3.603448275862069) internal successors, (209), 58 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:05:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:09,824 INFO L93 Difference]: Finished difference Result 165062 states and 209035 transitions. [2024-11-24 01:05:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2024-11-24 01:05:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.603448275862069) internal successors, (209), 58 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-24 01:05:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:09,953 INFO L225 Difference]: With dead ends: 165062 [2024-11-24 01:05:09,953 INFO L226 Difference]: Without dead ends: 138656 [2024-11-24 01:05:09,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20605 ImplicationChecksByTransitivity, 73.7s TimeCoverageRelationStatistics Valid=9829, Invalid=45161, Unknown=0, NotChecked=0, Total=54990 [2024-11-24 01:05:09,975 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 5237 mSDsluCounter, 3935 mSDsCounter, 0 mSdLazyCounter, 4525 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5237 SdHoareTripleChecker+Valid, 4051 SdHoareTripleChecker+Invalid, 4686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 4525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:09,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5237 Valid, 4051 Invalid, 4686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 4525 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-24 01:05:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138656 states. [2024-11-24 01:05:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138656 to 77221. [2024-11-24 01:05:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77221 states, 77220 states have (on average 1.263157213157213) internal successors, (97541), 77220 states have internal predecessors, (97541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:05:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77221 states to 77221 states and 97541 transitions. [2024-11-24 01:05:15,834 INFO L78 Accepts]: Start accepts. Automaton has 77221 states and 97541 transitions. Word has length 78 [2024-11-24 01:05:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:15,834 INFO L471 AbstractCegarLoop]: Abstraction has 77221 states and 97541 transitions. [2024-11-24 01:05:15,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.603448275862069) internal successors, (209), 58 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:05:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 77221 states and 97541 transitions. [2024-11-24 01:05:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-24 01:05:15,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:15,842 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:05:15,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:05:16,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 01:05:16,045 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:16,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1273186320, now seen corresponding path program 1 times [2024-11-24 01:05:16,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:16,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364542487] [2024-11-24 01:05:16,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:16,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 16 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:05:18,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:18,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364542487] [2024-11-24 01:05:18,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364542487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:18,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318855170] [2024-11-24 01:05:18,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:18,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:18,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:18,993 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:18,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:05:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:19,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 01:05:19,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 22 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:05:21,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:05:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 17 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:05:24,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318855170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:05:24,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:05:24,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 15] total 47 [2024-11-24 01:05:24,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882118275] [2024-11-24 01:05:24,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:05:24,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-24 01:05:24,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:24,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-24 01:05:24,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2024-11-24 01:05:24,338 INFO L87 Difference]: Start difference. First operand 77221 states and 97541 transitions. Second operand has 47 states, 47 states have (on average 7.51063829787234) internal successors, (353), 47 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:05:49,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:49,605 INFO L93 Difference]: Finished difference Result 166997 states and 211895 transitions. [2024-11-24 01:05:49,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-24 01:05:49,606 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 7.51063829787234) internal successors, (353), 47 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2024-11-24 01:05:49,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:49,827 INFO L225 Difference]: With dead ends: 166997 [2024-11-24 01:05:49,827 INFO L226 Difference]: Without dead ends: 127198 [2024-11-24 01:05:49,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3943 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=2278, Invalid=12002, Unknown=0, NotChecked=0, Total=14280 [2024-11-24 01:05:49,864 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 2545 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:49,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 2311 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-24 01:05:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127198 states. [2024-11-24 01:06:01,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127198 to 95952. [2024-11-24 01:06:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95952 states, 95951 states have (on average 1.2666882054381925) internal successors, (121540), 95951 states have internal predecessors, (121540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95952 states to 95952 states and 121540 transitions. [2024-11-24 01:06:01,543 INFO L78 Accepts]: Start accepts. Automaton has 95952 states and 121540 transitions. Word has length 123 [2024-11-24 01:06:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:06:01,543 INFO L471 AbstractCegarLoop]: Abstraction has 95952 states and 121540 transitions. [2024-11-24 01:06:01,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 7.51063829787234) internal successors, (353), 47 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 95952 states and 121540 transitions. [2024-11-24 01:06:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-24 01:06:01,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:06:01,553 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:01,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:06:01,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 01:06:01,759 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:06:01,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1163332702, now seen corresponding path program 1 times [2024-11-24 01:06:01,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:01,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060916628] [2024-11-24 01:06:01,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:01,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 47 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:03,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:03,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060916628] [2024-11-24 01:06:03,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060916628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:06:03,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426784146] [2024-11-24 01:06:03,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:03,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:03,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:03,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:06:03,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:06:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:03,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 01:06:03,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:06:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:04,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:06:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:07,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426784146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:06:07,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:06:07,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 32 [2024-11-24 01:06:07,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813365844] [2024-11-24 01:06:07,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:06:07,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 01:06:07,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:07,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 01:06:07,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-24 01:06:07,015 INFO L87 Difference]: Start difference. First operand 95952 states and 121540 transitions. Second operand has 32 states, 32 states have (on average 10.3125) internal successors, (330), 32 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:06:24,639 INFO L93 Difference]: Finished difference Result 173904 states and 218687 transitions. [2024-11-24 01:06:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-24 01:06:24,640 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.3125) internal successors, (330), 32 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2024-11-24 01:06:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:06:24,834 INFO L225 Difference]: With dead ends: 173904 [2024-11-24 01:06:24,834 INFO L226 Difference]: Without dead ends: 112560 [2024-11-24 01:06:24,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1691, Invalid=7621, Unknown=0, NotChecked=0, Total=9312 [2024-11-24 01:06:24,868 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 1303 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:06:24,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 2137 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 01:06:24,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112560 states. [2024-11-24 01:06:32,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112560 to 66380. [2024-11-24 01:06:32,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66380 states, 66379 states have (on average 1.2482260956025248) internal successors, (82856), 66379 states have internal predecessors, (82856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66380 states to 66380 states and 82856 transitions. [2024-11-24 01:06:32,903 INFO L78 Accepts]: Start accepts. Automaton has 66380 states and 82856 transitions. Word has length 123 [2024-11-24 01:06:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:06:32,903 INFO L471 AbstractCegarLoop]: Abstraction has 66380 states and 82856 transitions. [2024-11-24 01:06:32,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.3125) internal successors, (330), 32 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 66380 states and 82856 transitions. [2024-11-24 01:06:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-24 01:06:32,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:06:32,910 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:32,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:06:33,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 01:06:33,114 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:06:33,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:33,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1646037876, now seen corresponding path program 1 times [2024-11-24 01:06:33,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:33,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781652288] [2024-11-24 01:06:33,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:33,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 16 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:34,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781652288] [2024-11-24 01:06:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781652288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:06:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149201970] [2024-11-24 01:06:34,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:34,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:34,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:34,541 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:06:34,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cab41aa-6b8d-4da1-bae6-6005889f0cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:06:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:34,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-24 01:06:34,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:06:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 24 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:42,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:07:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 24 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:01,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149201970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:07:01,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:07:01,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 35, 34] total 78 [2024-11-24 01:07:01,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251641109] [2024-11-24 01:07:01,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:07:01,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-24 01:07:01,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:07:01,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-24 01:07:01,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=5488, Unknown=0, NotChecked=0, Total=6006 [2024-11-24 01:07:01,450 INFO L87 Difference]: Start difference. First operand 66380 states and 82856 transitions. Second operand has 78 states, 78 states have (on average 4.5256410256410255) internal successors, (353), 78 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)