./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.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_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/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_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/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_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/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 00613173bfd5be4a2d23c5cbdde33ad3a2bf8c778a3dcd5e833889c0a53ce55c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:31:02,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:31:02,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:31:02,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:31:02,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:31:02,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:31:02,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:31:02,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:31:02,767 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:31:02,767 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:31:02,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:31:02,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:31:02,768 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:31:02,768 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:31:02,768 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:31:02,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:31:02,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:31:02,769 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:31:02,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:31:02,769 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:31:02,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:31:02,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:31:02,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:31:02,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:31:02,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:31:02,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:31:02,770 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:31:02,770 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:31:02,771 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:31:02,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:31:02,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:31:02,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:31:02,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:31:02,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:31:02,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:31:02,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:31:02,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:31:02,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:31:02,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:31:02,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:31:02,772 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:31:02,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:31:02,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:31:02,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:31:02,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:31:02,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:31:02,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:31:02,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:31:02,773 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_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/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 -> 00613173bfd5be4a2d23c5cbdde33ad3a2bf8c778a3dcd5e833889c0a53ce55c [2024-11-23 23:31:03,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:31:03,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:31:03,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:31:03,245 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:31:03,245 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:31:03,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-11-23 23:31:06,940 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/data/d50378c73/30553d19d3a7467e8d8bdc28ffc09c22/FLAG89b22d4de [2024-11-23 23:31:07,850 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:31:07,851 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-11-23 23:31:07,907 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/data/d50378c73/30553d19d3a7467e8d8bdc28ffc09c22/FLAG89b22d4de [2024-11-23 23:31:08,026 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/data/d50378c73/30553d19d3a7467e8d8bdc28ffc09c22 [2024-11-23 23:31:08,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:31:08,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:31:08,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:31:08,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:31:08,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:31:08,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:31:08" (1/1) ... [2024-11-23 23:31:08,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d73f85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:08, skipping insertion in model container [2024-11-23 23:31:08,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:31:08" (1/1) ... [2024-11-23 23:31:08,226 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:31:08,673 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_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c[6450,6463] [2024-11-23 23:31:08,812 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_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c[14198,14211] [2024-11-23 23:31:09,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:31:09,945 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:31:09,983 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_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c[6450,6463] [2024-11-23 23:31:10,021 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_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c[14198,14211] [2024-11-23 23:31:10,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:31:10,717 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:31:10,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10 WrapperNode [2024-11-23 23:31:10,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:31:10,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:31:10,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:31:10,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:31:10,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:10,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,273 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-11-23 23:31:11,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:31:11,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:31:11,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:31:11,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:31:11,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,650 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:31:11,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,804 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:31:11,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:31:11,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:31:11,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:31:11,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (1/1) ... [2024-11-23 23:31:11,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:31:11,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:31:12,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:31:12,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:31:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:31:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:31:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:31:12,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:31:12,280 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:31:12,283 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:31:19,903 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-23 23:31:19,904 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:31:19,946 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:31:19,946 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 23:31:19,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:31:19 BoogieIcfgContainer [2024-11-23 23:31:19,951 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:31:19,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:31:19,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:31:19,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:31:19,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:31:08" (1/3) ... [2024-11-23 23:31:19,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0408c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:31:19, skipping insertion in model container [2024-11-23 23:31:19,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:10" (2/3) ... [2024-11-23 23:31:19,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0408c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:31:19, skipping insertion in model container [2024-11-23 23:31:19,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:31:19" (3/3) ... [2024-11-23 23:31:19,973 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-11-23 23:31:20,000 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:31:20,005 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 23:31:20,138 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:31:20,162 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;@e9b0965, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:31:20,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 23:31:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:20,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-23 23:31:20,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:20,185 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] [2024-11-23 23:31:20,185 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:20,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-11-23 23:31:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:20,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147106481] [2024-11-23 23:31:20,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:20,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147106481] [2024-11-23 23:31:20,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147106481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:20,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:20,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:31:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049004863] [2024-11-23 23:31:20,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:20,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:31:20,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:20,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:31:20,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:31:20,606 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:20,763 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-23 23:31:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:31:20,766 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-23 23:31:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:20,785 INFO L225 Difference]: With dead ends: 1724 [2024-11-23 23:31:20,785 INFO L226 Difference]: Without dead ends: 808 [2024-11-23 23:31:20,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:31:20,796 INFO L435 NwaCegarLoop]: 1591 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, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:20,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:31:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-23 23:31:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-23 23:31:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-23 23:31:20,943 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-23 23:31:20,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:20,947 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-23 23:31:20,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-23 23:31:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-23 23:31:20,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:20,949 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] [2024-11-23 23:31:20,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:31:20,950 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:20,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:20,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-23 23:31:20,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:20,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543745317] [2024-11-23 23:31:20,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543745317] [2024-11-23 23:31:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543745317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:21,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:31:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455679225] [2024-11-23 23:31:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:21,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:31:21,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:21,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:31:21,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:31:21,406 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:21,628 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-23 23:31:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:31:21,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-23 23:31:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:21,635 INFO L225 Difference]: With dead ends: 844 [2024-11-23 23:31:21,635 INFO L226 Difference]: Without dead ends: 808 [2024-11-23 23:31:21,640 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 [2024-11-23 23:31:21,642 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:21,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:31:21,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-23 23:31:21,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-23 23:31:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-23 23:31:21,703 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-23 23:31:21,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:21,703 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-23 23:31:21,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-23 23:31:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-23 23:31:21,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:21,706 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] [2024-11-23 23:31:21,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:31:21,707 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:21,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-23 23:31:21,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:21,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726225818] [2024-11-23 23:31:21,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:22,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:22,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726225818] [2024-11-23 23:31:22,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726225818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:22,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:22,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:31:22,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732074841] [2024-11-23 23:31:22,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:22,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:31:22,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:22,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:31:22,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:31:22,065 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:22,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:22,319 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2024-11-23 23:31:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:31:22,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-11-23 23:31:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:22,327 INFO L225 Difference]: With dead ends: 1000 [2024-11-23 23:31:22,327 INFO L226 Difference]: Without dead ends: 968 [2024-11-23 23:31:22,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:31:22,330 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:22,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:31:22,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-23 23:31:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2024-11-23 23:31:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2024-11-23 23:31:22,382 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2024-11-23 23:31:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:22,382 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2024-11-23 23:31:22,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:22,383 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2024-11-23 23:31:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-23 23:31:22,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:22,385 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:22,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:31:22,386 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:22,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-23 23:31:22,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:22,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235593467] [2024-11-23 23:31:22,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:22,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:22,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:22,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235593467] [2024-11-23 23:31:22,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235593467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:22,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:22,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:31:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542152519] [2024-11-23 23:31:22,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:22,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:31:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:22,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:31:22,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:22,569 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:22,653 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2024-11-23 23:31:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:31:22,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-23 23:31:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:22,662 INFO L225 Difference]: With dead ends: 951 [2024-11-23 23:31:22,662 INFO L226 Difference]: Without dead ends: 889 [2024-11-23 23:31:22,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:22,664 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 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 [2024-11-23 23:31:22,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:31:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-23 23:31:22,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2024-11-23 23:31:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2024-11-23 23:31:22,725 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2024-11-23 23:31:22,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:22,725 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2024-11-23 23:31:22,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2024-11-23 23:31:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-23 23:31:22,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:22,727 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:22,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:31:22,727 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:22,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-23 23:31:22,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:22,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654606220] [2024-11-23 23:31:22,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:22,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:23,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:23,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654606220] [2024-11-23 23:31:23,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654606220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:23,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:23,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:31:23,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733220424] [2024-11-23 23:31:23,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:23,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:31:23,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:23,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:31:23,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:31:23,153 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:23,314 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2024-11-23 23:31:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:31:23,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-23 23:31:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:23,321 INFO L225 Difference]: With dead ends: 996 [2024-11-23 23:31:23,321 INFO L226 Difference]: Without dead ends: 887 [2024-11-23 23:31:23,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:31:23,323 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:23,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:31:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-23 23:31:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2024-11-23 23:31:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2024-11-23 23:31:23,367 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2024-11-23 23:31:23,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:23,369 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2024-11-23 23:31:23,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:23,370 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2024-11-23 23:31:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 23:31:23,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:23,371 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] [2024-11-23 23:31:23,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:31:23,371 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:23,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-23 23:31:23,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:23,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228575963] [2024-11-23 23:31:23,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:23,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228575963] [2024-11-23 23:31:23,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228575963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:23,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:23,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:31:23,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944985989] [2024-11-23 23:31:23,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:23,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:31:23,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:23,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:31:23,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:31:23,814 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:23,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:23,993 INFO L93 Difference]: Finished difference Result 893 states and 1635 transitions. [2024-11-23 23:31:23,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:31:23,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-23 23:31:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:24,006 INFO L225 Difference]: With dead ends: 893 [2024-11-23 23:31:24,006 INFO L226 Difference]: Without dead ends: 891 [2024-11-23 23:31:24,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:31:24,008 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 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 [2024-11-23 23:31:24,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:31:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-23 23:31:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2024-11-23 23:31:24,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2024-11-23 23:31:24,056 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2024-11-23 23:31:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:24,057 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2024-11-23 23:31:24,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2024-11-23 23:31:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 23:31:24,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:24,060 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] [2024-11-23 23:31:24,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:31:24,061 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:24,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-23 23:31:24,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:24,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346294610] [2024-11-23 23:31:24,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:24,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:24,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:24,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346294610] [2024-11-23 23:31:24,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346294610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:24,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:24,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:31:24,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053377970] [2024-11-23 23:31:24,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:24,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:31:24,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:24,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:31:24,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:24,189 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:24,251 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2024-11-23 23:31:24,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:31:24,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-23 23:31:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:24,257 INFO L225 Difference]: With dead ends: 1105 [2024-11-23 23:31:24,258 INFO L226 Difference]: Without dead ends: 990 [2024-11-23 23:31:24,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:24,259 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 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 [2024-11-23 23:31:24,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:31:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-23 23:31:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-11-23 23:31:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2024-11-23 23:31:24,305 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2024-11-23 23:31:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:24,306 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2024-11-23 23:31:24,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2024-11-23 23:31:24,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 23:31:24,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:24,309 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] [2024-11-23 23:31:24,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:31:24,309 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:24,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:24,310 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-23 23:31:24,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:24,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468116871] [2024-11-23 23:31:24,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:24,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:24,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:24,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468116871] [2024-11-23 23:31:24,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468116871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:24,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:24,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:31:24,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516323075] [2024-11-23 23:31:24,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:24,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:31:24,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:24,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:31:24,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:24,422 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:24,484 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2024-11-23 23:31:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:31:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-23 23:31:24,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:24,491 INFO L225 Difference]: With dead ends: 1380 [2024-11-23 23:31:24,491 INFO L226 Difference]: Without dead ends: 1168 [2024-11-23 23:31:24,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:24,493 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 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 [2024-11-23 23:31:24,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:31:24,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-23 23:31:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2024-11-23 23:31:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2024-11-23 23:31:24,548 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2024-11-23 23:31:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:24,548 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2024-11-23 23:31:24,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2024-11-23 23:31:24,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-23 23:31:24,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:24,549 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] [2024-11-23 23:31:24,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:31:24,550 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:24,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:24,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-23 23:31:24,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:24,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562098551] [2024-11-23 23:31:24,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:24,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:24,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:24,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562098551] [2024-11-23 23:31:24,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562098551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:24,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:24,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:31:24,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361661876] [2024-11-23 23:31:24,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:24,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:31:24,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:24,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:31:24,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:24,733 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:24,785 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2024-11-23 23:31:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:31:24,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-23 23:31:24,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:24,793 INFO L225 Difference]: With dead ends: 1589 [2024-11-23 23:31:24,793 INFO L226 Difference]: Without dead ends: 1354 [2024-11-23 23:31:24,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:24,796 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 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 [2024-11-23 23:31:24,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:31:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2024-11-23 23:31:24,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2024-11-23 23:31:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2024-11-23 23:31:24,851 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2024-11-23 23:31:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:24,851 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2024-11-23 23:31:24,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:24,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2024-11-23 23:31:24,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-23 23:31:24,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:24,853 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] [2024-11-23 23:31:24,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:31:24,853 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:24,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-23 23:31:24,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:24,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128898326] [2024-11-23 23:31:24,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:24,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:31:25,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:25,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128898326] [2024-11-23 23:31:25,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128898326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:25,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:25,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:31:25,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240575931] [2024-11-23 23:31:25,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:25,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:31:25,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:25,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:31:25,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:31:25,101 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-23 23:31:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:25,273 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2024-11-23 23:31:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:31:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 54 [2024-11-23 23:31:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:25,287 INFO L225 Difference]: With dead ends: 3208 [2024-11-23 23:31:25,287 INFO L226 Difference]: Without dead ends: 2634 [2024-11-23 23:31:25,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:31:25,290 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 3057 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:25,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:31:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2024-11-23 23:31:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2024-11-23 23:31:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2024-11-23 23:31:25,376 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2024-11-23 23:31:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:25,378 INFO L471 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2024-11-23 23:31:25,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-23 23:31:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2024-11-23 23:31:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-23 23:31:25,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:25,379 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] [2024-11-23 23:31:25,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:31:25,380 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:25,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:25,380 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-23 23:31:25,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:25,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814932150] [2024-11-23 23:31:25,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:25,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:31:25,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:25,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814932150] [2024-11-23 23:31:25,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814932150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:25,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:25,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:31:25,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424173145] [2024-11-23 23:31:25,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:25,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:31:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:25,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:31:25,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:31:25,581 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:25,770 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2024-11-23 23:31:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:31:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 54 [2024-11-23 23:31:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:25,786 INFO L225 Difference]: With dead ends: 3780 [2024-11-23 23:31:25,786 INFO L226 Difference]: Without dead ends: 3206 [2024-11-23 23:31:25,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:31:25,789 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:25,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:31:25,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2024-11-23 23:31:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2024-11-23 23:31:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2024-11-23 23:31:25,908 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2024-11-23 23:31:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:25,909 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2024-11-23 23:31:25,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2024-11-23 23:31:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 23:31:25,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:25,910 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] [2024-11-23 23:31:25,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:31:25,911 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:25,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-23 23:31:25,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:25,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778502902] [2024-11-23 23:31:25,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:25,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:26,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:26,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778502902] [2024-11-23 23:31:26,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778502902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:26,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:26,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:31:26,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763431842] [2024-11-23 23:31:26,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:26,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:31:26,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:26,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:31:26,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:26,080 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:26,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:26,163 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2024-11-23 23:31:26,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:31:26,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-23 23:31:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:26,174 INFO L225 Difference]: With dead ends: 4260 [2024-11-23 23:31:26,174 INFO L226 Difference]: Without dead ends: 2254 [2024-11-23 23:31:26,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:26,178 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 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 [2024-11-23 23:31:26,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:31:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2024-11-23 23:31:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2024-11-23 23:31:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2024-11-23 23:31:26,271 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2024-11-23 23:31:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:26,271 INFO L471 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2024-11-23 23:31:26,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2024-11-23 23:31:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 23:31:26,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:26,278 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] [2024-11-23 23:31:26,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:31:26,278 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:26,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-23 23:31:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:26,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529291487] [2024-11-23 23:31:26,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:26,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:31:26,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:26,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529291487] [2024-11-23 23:31:26,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529291487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:26,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:26,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:31:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097308642] [2024-11-23 23:31:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:26,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:31:26,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:26,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:31:26,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:31:26,454 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:26,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:26,623 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2024-11-23 23:31:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:31:26,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 56 [2024-11-23 23:31:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:26,636 INFO L225 Difference]: With dead ends: 3508 [2024-11-23 23:31:26,637 INFO L226 Difference]: Without dead ends: 3090 [2024-11-23 23:31:26,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:31:26,640 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:26,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:31:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2024-11-23 23:31:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2024-11-23 23:31:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2024-11-23 23:31:26,750 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2024-11-23 23:31:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:26,750 INFO L471 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2024-11-23 23:31:26,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2024-11-23 23:31:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 23:31:26,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:26,755 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] [2024-11-23 23:31:26,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:31:26,756 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:26,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:26,756 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-23 23:31:26,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:26,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615354704] [2024-11-23 23:31:26,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:26,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:26,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:26,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615354704] [2024-11-23 23:31:26,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615354704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:26,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:26,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:31:26,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796647687] [2024-11-23 23:31:26,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:26,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:31:26,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:26,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:31:26,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:26,902 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-23 23:31:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:26,973 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2024-11-23 23:31:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:31:26,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 57 [2024-11-23 23:31:26,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:26,983 INFO L225 Difference]: With dead ends: 3608 [2024-11-23 23:31:26,983 INFO L226 Difference]: Without dead ends: 1734 [2024-11-23 23:31:26,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:26,986 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 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 [2024-11-23 23:31:26,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:31:26,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-23 23:31:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2024-11-23 23:31:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2024-11-23 23:31:27,054 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2024-11-23 23:31:27,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:27,055 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2024-11-23 23:31:27,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-23 23:31:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2024-11-23 23:31:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 23:31:27,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:27,057 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] [2024-11-23 23:31:27,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:31:27,058 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:27,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:27,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-23 23:31:27,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:27,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034367510] [2024-11-23 23:31:27,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:27,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:27,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:27,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034367510] [2024-11-23 23:31:27,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034367510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:27,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:27,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:31:27,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943409457] [2024-11-23 23:31:27,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:27,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:31:27,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:27,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:31:27,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:27,189 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2024-11-23 23:31:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:27,238 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2024-11-23 23:31:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:31:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 59 [2024-11-23 23:31:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:27,249 INFO L225 Difference]: With dead ends: 2204 [2024-11-23 23:31:27,249 INFO L226 Difference]: Without dead ends: 1266 [2024-11-23 23:31:27,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:31:27,251 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 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 [2024-11-23 23:31:27,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:31:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-23 23:31:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2024-11-23 23:31:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2024-11-23 23:31:27,304 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2024-11-23 23:31:27,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:27,308 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2024-11-23 23:31:27,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2024-11-23 23:31:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2024-11-23 23:31:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 23:31:27,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:27,310 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] [2024-11-23 23:31:27,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:31:27,310 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:27,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:27,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-23 23:31:27,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:27,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048872015] [2024-11-23 23:31:27,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:27,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:29,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048872015] [2024-11-23 23:31:29,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048872015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:31:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612102571] [2024-11-23 23:31:29,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:29,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:29,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:31:29,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:31:29,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:31:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:29,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:31:29,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:31:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:31:30,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:31:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:31:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612102571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:31:30,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:31:30,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-23 23:31:30,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284983129] [2024-11-23 23:31:30,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:31:30,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 23:31:30,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:30,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 23:31:30,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:31:30,615 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:33,958 INFO L93 Difference]: Finished difference Result 3665 states and 5284 transitions. [2024-11-23 23:31:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-23 23:31:33,959 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-23 23:31:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:33,980 INFO L225 Difference]: With dead ends: 3665 [2024-11-23 23:31:33,980 INFO L226 Difference]: Without dead ends: 3195 [2024-11-23 23:31:33,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-23 23:31:33,984 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 14347 mSDsluCounter, 7682 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14347 SdHoareTripleChecker+Valid, 9181 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:33,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14347 Valid, 9181 Invalid, 727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:31:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2024-11-23 23:31:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3161. [2024-11-23 23:31:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 3159 states have (on average 1.4102564102564104) internal successors, (4455), 3160 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4455 transitions. [2024-11-23 23:31:34,200 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4455 transitions. Word has length 61 [2024-11-23 23:31:34,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:34,200 INFO L471 AbstractCegarLoop]: Abstraction has 3161 states and 4455 transitions. [2024-11-23 23:31:34,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4455 transitions. [2024-11-23 23:31:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 23:31:34,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:34,202 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] [2024-11-23 23:31:34,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:31:34,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:31:34,407 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:34,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-11-23 23:31:34,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:34,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117183356] [2024-11-23 23:31:34,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:34,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:37,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:37,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117183356] [2024-11-23 23:31:37,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117183356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:31:37,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473086856] [2024-11-23 23:31:37,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:37,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:37,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:31:37,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:31:37,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:31:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:37,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:31:37,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:31:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:38,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:31:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:39,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473086856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:31:39,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:31:39,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-23 23:31:39,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029314053] [2024-11-23 23:31:39,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:31:39,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 23:31:39,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:39,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 23:31:39,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:31:39,535 INFO L87 Difference]: Start difference. First operand 3161 states and 4455 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:40,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:40,460 INFO L93 Difference]: Finished difference Result 7430 states and 9870 transitions. [2024-11-23 23:31:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:31:40,463 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 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 62 [2024-11-23 23:31:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:40,484 INFO L225 Difference]: With dead ends: 7430 [2024-11-23 23:31:40,484 INFO L226 Difference]: Without dead ends: 5471 [2024-11-23 23:31:40,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 23:31:40,490 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 15174 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15174 SdHoareTripleChecker+Valid, 4758 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:40,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15174 Valid, 4758 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:31:40,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5471 states. [2024-11-23 23:31:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5471 to 5405. [2024-11-23 23:31:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5405 states, 5403 states have (on average 1.331482509716824) internal successors, (7194), 5404 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 7194 transitions. [2024-11-23 23:31:40,725 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 7194 transitions. Word has length 62 [2024-11-23 23:31:40,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:40,726 INFO L471 AbstractCegarLoop]: Abstraction has 5405 states and 7194 transitions. [2024-11-23 23:31:40,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 7194 transitions. [2024-11-23 23:31:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 23:31:40,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:40,727 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:40,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:31:40,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 23:31:40,932 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:40,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-11-23 23:31:40,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:40,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964698164] [2024-11-23 23:31:40,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:40,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:41,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:41,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964698164] [2024-11-23 23:31:41,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964698164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:31:41,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631406538] [2024-11-23 23:31:41,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:41,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:41,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:31:41,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:31:41,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:31:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:41,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 23:31:41,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:31:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:42,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:31:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:44,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631406538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:31:44,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:31:44,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-23 23:31:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264449470] [2024-11-23 23:31:44,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:31:44,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 23:31:44,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:44,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 23:31:44,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:31:44,144 INFO L87 Difference]: Start difference. First operand 5405 states and 7194 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:48,759 INFO L93 Difference]: Finished difference Result 15652 states and 19990 transitions. [2024-11-23 23:31:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-23 23:31:48,759 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 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 62 [2024-11-23 23:31:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:48,786 INFO L225 Difference]: With dead ends: 15652 [2024-11-23 23:31:48,786 INFO L226 Difference]: Without dead ends: 11554 [2024-11-23 23:31:48,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-23 23:31:48,795 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 23397 mSDsluCounter, 16828 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23397 SdHoareTripleChecker+Valid, 18336 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:48,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23397 Valid, 18336 Invalid, 926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:31:48,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11554 states. [2024-11-23 23:31:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11554 to 7604. [2024-11-23 23:31:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 7602 states have (on average 1.2947908445146015) internal successors, (9843), 7603 states have internal predecessors, (9843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 9843 transitions. [2024-11-23 23:31:49,174 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 9843 transitions. Word has length 62 [2024-11-23 23:31:49,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:49,174 INFO L471 AbstractCegarLoop]: Abstraction has 7604 states and 9843 transitions. [2024-11-23 23:31:49,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:49,175 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 9843 transitions. [2024-11-23 23:31:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:31:49,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:49,176 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] [2024-11-23 23:31:49,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:31:49,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 23:31:49,377 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:49,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:49,378 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-11-23 23:31:49,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:49,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491434109] [2024-11-23 23:31:49,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:49,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:49,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491434109] [2024-11-23 23:31:49,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491434109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:31:49,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905121387] [2024-11-23 23:31:49,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:49,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:49,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:31:49,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:31:49,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:31:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:50,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:31:50,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:31:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:52,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:31:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:53,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905121387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:31:53,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:31:53,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-23 23:31:53,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231875441] [2024-11-23 23:31:53,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:31:53,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 23:31:53,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:53,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 23:31:53,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-23 23:31:53,438 INFO L87 Difference]: Start difference. First operand 7604 states and 9843 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:55,582 INFO L93 Difference]: Finished difference Result 16330 states and 20685 transitions. [2024-11-23 23:31:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 23:31:55,583 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 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 63 [2024-11-23 23:31:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:55,607 INFO L225 Difference]: With dead ends: 16330 [2024-11-23 23:31:55,607 INFO L226 Difference]: Without dead ends: 10686 [2024-11-23 23:31:55,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-23 23:31:55,615 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 15734 mSDsluCounter, 6542 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15734 SdHoareTripleChecker+Valid, 8056 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:55,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15734 Valid, 8056 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:31:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2024-11-23 23:31:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 10080. [2024-11-23 23:31:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10080 states, 10078 states have (on average 1.268604881921016) internal successors, (12785), 10079 states have internal predecessors, (12785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10080 states to 10080 states and 12785 transitions. [2024-11-23 23:31:56,213 INFO L78 Accepts]: Start accepts. Automaton has 10080 states and 12785 transitions. Word has length 63 [2024-11-23 23:31:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:56,214 INFO L471 AbstractCegarLoop]: Abstraction has 10080 states and 12785 transitions. [2024-11-23 23:31:56,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 10080 states and 12785 transitions. [2024-11-23 23:31:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:31:56,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:56,216 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:56,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:31:56,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:56,417 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:56,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-11-23 23:31:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:56,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154581765] [2024-11-23 23:31:56,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:59,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:59,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154581765] [2024-11-23 23:31:59,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154581765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:31:59,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083029181] [2024-11-23 23:31:59,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:59,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:59,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:31:59,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:31:59,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:31:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:59,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 23:31:59,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:32:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:03,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:32:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083029181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:32:05,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:32:05,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-23 23:32:05,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514970617] [2024-11-23 23:32:05,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:32:05,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-23 23:32:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:05,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-23 23:32:05,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-23 23:32:05,411 INFO L87 Difference]: Start difference. First operand 10080 states and 12785 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:32:33,927 INFO L93 Difference]: Finished difference Result 20387 states and 25368 transitions. [2024-11-23 23:32:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-23 23:32:33,927 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 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 63 [2024-11-23 23:32:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:32:34,007 INFO L225 Difference]: With dead ends: 20387 [2024-11-23 23:32:34,007 INFO L226 Difference]: Without dead ends: 16643 [2024-11-23 23:32:34,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6022 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=4194, Invalid=16398, Unknown=0, NotChecked=0, Total=20592 [2024-11-23 23:32:34,023 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 15673 mSDsluCounter, 26940 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15673 SdHoareTripleChecker+Valid, 28482 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:32:34,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15673 Valid, 28482 Invalid, 2629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-23 23:32:34,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16643 states. [2024-11-23 23:32:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16643 to 13196. [2024-11-23 23:32:35,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13196 states, 13194 states have (on average 1.2616340760951947) internal successors, (16646), 13195 states have internal predecessors, (16646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13196 states to 13196 states and 16646 transitions. [2024-11-23 23:32:35,387 INFO L78 Accepts]: Start accepts. Automaton has 13196 states and 16646 transitions. Word has length 63 [2024-11-23 23:32:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:32:35,389 INFO L471 AbstractCegarLoop]: Abstraction has 13196 states and 16646 transitions. [2024-11-23 23:32:35,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:35,389 INFO L276 IsEmpty]: Start isEmpty. Operand 13196 states and 16646 transitions. [2024-11-23 23:32:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:32:35,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:32:35,396 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:32:35,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:32:35,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:32:35,597 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:32:35,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:32:35,600 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-11-23 23:32:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:32:35,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613551701] [2024-11-23 23:32:35,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:32:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:36,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:32:36,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613551701] [2024-11-23 23:32:36,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613551701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:32:36,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704933700] [2024-11-23 23:32:36,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:36,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:32:36,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:32:36,860 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:32:36,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:32:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:36,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 23:32:36,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:32:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:38,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:32:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:39,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704933700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:32:39,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:32:39,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-23 23:32:39,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135697437] [2024-11-23 23:32:39,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:32:39,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-23 23:32:39,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:39,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-23 23:32:39,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 23:32:39,042 INFO L87 Difference]: Start difference. First operand 13196 states and 16646 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:43,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:32:43,236 INFO L93 Difference]: Finished difference Result 18056 states and 22572 transitions. [2024-11-23 23:32:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 23:32:43,236 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 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 [2024-11-23 23:32:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:32:43,267 INFO L225 Difference]: With dead ends: 18056 [2024-11-23 23:32:43,267 INFO L226 Difference]: Without dead ends: 12309 [2024-11-23 23:32:43,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-23 23:32:43,275 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 14160 mSDsluCounter, 17137 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14160 SdHoareTripleChecker+Valid, 18654 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:32:43,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14160 Valid, 18654 Invalid, 1211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:32:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12309 states. [2024-11-23 23:32:44,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12309 to 10191. [2024-11-23 23:32:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10191 states, 10189 states have (on average 1.2683285896555108) internal successors, (12923), 10190 states have internal predecessors, (12923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10191 states to 10191 states and 12923 transitions. [2024-11-23 23:32:44,113 INFO L78 Accepts]: Start accepts. Automaton has 10191 states and 12923 transitions. Word has length 64 [2024-11-23 23:32:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:32:44,114 INFO L471 AbstractCegarLoop]: Abstraction has 10191 states and 12923 transitions. [2024-11-23 23:32:44,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10191 states and 12923 transitions. [2024-11-23 23:32:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:32:44,116 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:32:44,116 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] [2024-11-23 23:32:44,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:32:44,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:32:44,321 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:32:44,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:32:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-23 23:32:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:32:44,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688182302] [2024-11-23 23:32:44,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:44,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:32:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:46,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:32:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688182302] [2024-11-23 23:32:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688182302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:32:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900283500] [2024-11-23 23:32:46,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:46,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:32:46,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:32:46,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:32:46,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:32:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:46,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 23:32:46,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:32:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:47,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:32:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:49,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900283500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:32:49,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:32:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-23 23:32:49,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661040101] [2024-11-23 23:32:49,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:32:49,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-23 23:32:49,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:49,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-23 23:32:49,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-23 23:32:49,042 INFO L87 Difference]: Start difference. First operand 10191 states and 12923 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:02,299 INFO L93 Difference]: Finished difference Result 16931 states and 21130 transitions. [2024-11-23 23:33:02,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-23 23:33:02,300 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 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 65 [2024-11-23 23:33:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:02,327 INFO L225 Difference]: With dead ends: 16931 [2024-11-23 23:33:02,327 INFO L226 Difference]: Without dead ends: 12152 [2024-11-23 23:33:02,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2078, Invalid=7822, Unknown=0, NotChecked=0, Total=9900 [2024-11-23 23:33:02,336 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 18241 mSDsluCounter, 36138 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18241 SdHoareTripleChecker+Valid, 37696 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:02,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18241 Valid, 37696 Invalid, 2659 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:33:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12152 states. [2024-11-23 23:33:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12152 to 8040. [2024-11-23 23:33:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8040 states, 8038 states have (on average 1.281288877830306) internal successors, (10299), 8039 states have internal predecessors, (10299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8040 states to 8040 states and 10299 transitions. [2024-11-23 23:33:03,199 INFO L78 Accepts]: Start accepts. Automaton has 8040 states and 10299 transitions. Word has length 65 [2024-11-23 23:33:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:03,201 INFO L471 AbstractCegarLoop]: Abstraction has 8040 states and 10299 transitions. [2024-11-23 23:33:03,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8040 states and 10299 transitions. [2024-11-23 23:33:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:33:03,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:03,204 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:03,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:33:03,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:03,405 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:03,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash -872597037, now seen corresponding path program 1 times [2024-11-23 23:33:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:03,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21332238] [2024-11-23 23:33:03,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:03,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:33:03,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21332238] [2024-11-23 23:33:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21332238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:03,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:33:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:33:03,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246205230] [2024-11-23 23:33:03,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:03,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:33:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:03,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:33:03,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:33:03,592 INFO L87 Difference]: Start difference. First operand 8040 states and 10299 transitions. Second operand has 4 states, 4 states have (on average 16.75) 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) [2024-11-23 23:33:12,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:12,861 INFO L93 Difference]: Finished difference Result 10295 states and 14608 transitions. [2024-11-23 23:33:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:33:12,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) 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 [2024-11-23 23:33:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:12,871 INFO L225 Difference]: With dead ends: 10295 [2024-11-23 23:33:12,871 INFO L226 Difference]: Without dead ends: 9542 [2024-11-23 23:33:12,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:33:12,874 INFO L435 NwaCegarLoop]: 765 mSDtfsCounter, 2329 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:12,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2329 Valid, 783 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-23 23:33:12,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9542 states. [2024-11-23 23:33:13,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9542 to 9542. [2024-11-23 23:33:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9540 states have (on average 1.2866876310272537) internal successors, (12275), 9541 states have internal predecessors, (12275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 12275 transitions. [2024-11-23 23:33:13,539 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 12275 transitions. Word has length 67 [2024-11-23 23:33:13,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:13,541 INFO L471 AbstractCegarLoop]: Abstraction has 9542 states and 12275 transitions. [2024-11-23 23:33:13,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) 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) [2024-11-23 23:33:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 12275 transitions. [2024-11-23 23:33:13,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 23:33:13,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:13,548 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-23 23:33:13,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:33:13,548 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:13,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1065912349, now seen corresponding path program 1 times [2024-11-23 23:33:13,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:13,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135199959] [2024-11-23 23:33:13,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:13,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:33:14,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:14,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135199959] [2024-11-23 23:33:14,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135199959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:33:14,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880465629] [2024-11-23 23:33:14,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:14,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:14,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:14,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:33:14,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:33:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:14,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:33:14,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:33:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:33:15,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:33:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:33:17,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880465629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:33:17,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:33:17,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-23 23:33:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028669973] [2024-11-23 23:33:17,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:33:17,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 23:33:17,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:17,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 23:33:17,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-23 23:33:17,914 INFO L87 Difference]: Start difference. First operand 9542 states and 12275 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:19,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:19,058 INFO L93 Difference]: Finished difference Result 14458 states and 18331 transitions. [2024-11-23 23:33:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:33:19,059 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 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 103 [2024-11-23 23:33:19,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:19,070 INFO L225 Difference]: With dead ends: 14458 [2024-11-23 23:33:19,070 INFO L226 Difference]: Without dead ends: 9862 [2024-11-23 23:33:19,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 23:33:19,075 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 10385 mSDsluCounter, 10742 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10385 SdHoareTripleChecker+Valid, 12257 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:19,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10385 Valid, 12257 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:33:19,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9862 states. [2024-11-23 23:33:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9862 to 9542. [2024-11-23 23:33:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9540 states have (on average 1.2780922431865829) internal successors, (12193), 9541 states have internal predecessors, (12193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 12193 transitions. [2024-11-23 23:33:19,842 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 12193 transitions. Word has length 103 [2024-11-23 23:33:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:19,843 INFO L471 AbstractCegarLoop]: Abstraction has 9542 states and 12193 transitions. [2024-11-23 23:33:19,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 12193 transitions. [2024-11-23 23:33:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 23:33:19,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:19,846 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:19,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:33:20,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:20,051 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:20,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:20,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1754049935, now seen corresponding path program 1 times [2024-11-23 23:33:20,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:20,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330651865] [2024-11-23 23:33:20,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:20,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:33:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:20,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330651865] [2024-11-23 23:33:20,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330651865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:33:20,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039133833] [2024-11-23 23:33:20,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:20,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:20,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:20,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:33:20,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:33:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:21,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:33:21,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:33:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:33:22,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:33:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:33:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039133833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:33:23,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:33:23,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-23 23:33:23,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150997747] [2024-11-23 23:33:23,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:33:23,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 23:33:23,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:23,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 23:33:23,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-23 23:33:23,797 INFO L87 Difference]: Start difference. First operand 9542 states and 12193 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:25,157 INFO L93 Difference]: Finished difference Result 13807 states and 17383 transitions. [2024-11-23 23:33:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:33:25,157 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-23 23:33:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:25,164 INFO L225 Difference]: With dead ends: 13807 [2024-11-23 23:33:25,164 INFO L226 Difference]: Without dead ends: 9628 [2024-11-23 23:33:25,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:33:25,167 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 13311 mSDsluCounter, 10690 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13311 SdHoareTripleChecker+Valid, 12205 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:25,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13311 Valid, 12205 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:33:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9628 states. [2024-11-23 23:33:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 9542. [2024-11-23 23:33:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9540 states have (on average 1.2723270440251573) internal successors, (12138), 9541 states have internal predecessors, (12138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 12138 transitions. [2024-11-23 23:33:25,946 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 12138 transitions. Word has length 103 [2024-11-23 23:33:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:25,946 INFO L471 AbstractCegarLoop]: Abstraction has 9542 states and 12138 transitions. [2024-11-23 23:33:25,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 12138 transitions. [2024-11-23 23:33:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 23:33:25,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:25,958 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:25,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:33:26,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-23 23:33:26,159 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:26,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:26,159 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2024-11-23 23:33:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:26,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857788096] [2024-11-23 23:33:26,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:33:27,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:27,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857788096] [2024-11-23 23:33:27,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857788096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:33:27,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155651876] [2024-11-23 23:33:27,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:27,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:27,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:27,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:33:27,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:33:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:27,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-23 23:33:27,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:33:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:33:29,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:33:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:33:33,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155651876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:33:33,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:33:33,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-23 23:33:33,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134752086] [2024-11-23 23:33:33,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:33:33,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-23 23:33:33,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:33,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-23 23:33:33,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-23 23:33:33,725 INFO L87 Difference]: Start difference. First operand 9542 states and 12138 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:58,749 INFO L93 Difference]: Finished difference Result 15640 states and 19401 transitions. [2024-11-23 23:33:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-23 23:33:58,750 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 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 104 [2024-11-23 23:33:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:58,756 INFO L225 Difference]: With dead ends: 15640 [2024-11-23 23:33:58,756 INFO L226 Difference]: Without dead ends: 11724 [2024-11-23 23:33:58,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9886 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=5256, Invalid=28416, Unknown=0, NotChecked=0, Total=33672 [2024-11-23 23:33:58,761 INFO L435 NwaCegarLoop]: 1686 mSDtfsCounter, 26409 mSDsluCounter, 33761 mSDsCounter, 0 mSdLazyCounter, 4034 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26409 SdHoareTripleChecker+Valid, 35447 SdHoareTripleChecker+Invalid, 4271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 4034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:58,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26409 Valid, 35447 Invalid, 4271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [237 Valid, 4034 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-23 23:33:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11724 states. [2024-11-23 23:33:59,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11724 to 9186. [2024-11-23 23:33:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9184 states have (on average 1.2701437282229966) internal successors, (11665), 9185 states have internal predecessors, (11665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 11665 transitions. [2024-11-23 23:33:59,498 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 11665 transitions. Word has length 104 [2024-11-23 23:33:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:59,498 INFO L471 AbstractCegarLoop]: Abstraction has 9186 states and 11665 transitions. [2024-11-23 23:33:59,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 11665 transitions. [2024-11-23 23:33:59,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:33:59,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:59,501 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:59,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:33:59,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 23:33:59,702 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:59,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2024-11-23 23:33:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376532079] [2024-11-23 23:33:59,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:59,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:34:01,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:01,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376532079] [2024-11-23 23:34:01,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376532079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:34:01,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344764934] [2024-11-23 23:34:01,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:01,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:34:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:34:01,291 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:34:01,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:34:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:01,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 23:34:01,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:34:03,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:34:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:34:07,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344764934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:34:07,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:34:07,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 54 [2024-11-23 23:34:07,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303988538] [2024-11-23 23:34:07,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:34:07,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-23 23:34:07,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:07,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-23 23:34:07,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2630, Unknown=0, NotChecked=0, Total=2862 [2024-11-23 23:34:07,024 INFO L87 Difference]: Start difference. First operand 9186 states and 11665 transitions. Second operand has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:50,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:50,941 INFO L93 Difference]: Finished difference Result 18082 states and 22333 transitions. [2024-11-23 23:34:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2024-11-23 23:34:50,941 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-23 23:34:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:50,955 INFO L225 Difference]: With dead ends: 18082 [2024-11-23 23:34:50,955 INFO L226 Difference]: Without dead ends: 14018 [2024-11-23 23:34:50,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=8347, Invalid=42053, Unknown=0, NotChecked=0, Total=50400 [2024-11-23 23:34:50,974 INFO L435 NwaCegarLoop]: 1611 mSDtfsCounter, 23959 mSDsluCounter, 41928 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23959 SdHoareTripleChecker+Valid, 43539 SdHoareTripleChecker+Invalid, 3329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:50,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23959 Valid, 43539 Invalid, 3329 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [144 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-23 23:34:50,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14018 states. [2024-11-23 23:34:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14018 to 13734. [2024-11-23 23:34:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13734 states, 13732 states have (on average 1.2444654820856393) internal successors, (17089), 13733 states have internal predecessors, (17089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13734 states to 13734 states and 17089 transitions. [2024-11-23 23:34:52,525 INFO L78 Accepts]: Start accepts. Automaton has 13734 states and 17089 transitions. Word has length 105 [2024-11-23 23:34:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:52,525 INFO L471 AbstractCegarLoop]: Abstraction has 13734 states and 17089 transitions. [2024-11-23 23:34:52,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:34:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 13734 states and 17089 transitions. [2024-11-23 23:34:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 23:34:52,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:52,527 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:52,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:34:52,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 23:34:52,728 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:52,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:52,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1969661904, now seen corresponding path program 1 times [2024-11-23 23:34:52,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:52,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52150085] [2024-11-23 23:34:52,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:52,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:34:54,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:54,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52150085] [2024-11-23 23:34:54,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52150085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:34:54,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991305109] [2024-11-23 23:34:54,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:54,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:34:54,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:34:54,561 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:34:54,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:34:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:54,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-23 23:34:54,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:34:58,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:35:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:08,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991305109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:35:08,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:35:08,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 76 [2024-11-23 23:35:08,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945066891] [2024-11-23 23:35:08,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:35:08,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-23 23:35:08,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:35:08,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-23 23:35:08,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=5141, Unknown=0, NotChecked=0, Total=5700 [2024-11-23 23:35:08,002 INFO L87 Difference]: Start difference. First operand 13734 states and 17089 transitions. Second operand has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:13,692 INFO L93 Difference]: Finished difference Result 28607 states and 34929 transitions. [2024-11-23 23:36:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-11-23 23:36:13,693 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-23 23:36:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:13,707 INFO L225 Difference]: With dead ends: 28607 [2024-11-23 23:36:13,707 INFO L226 Difference]: Without dead ends: 19441 [2024-11-23 23:36:13,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18854 ImplicationChecksByTransitivity, 64.8s TimeCoverageRelationStatistics Valid=9117, Invalid=45405, Unknown=0, NotChecked=0, Total=54522 [2024-11-23 23:36:13,717 INFO L435 NwaCegarLoop]: 1646 mSDtfsCounter, 20921 mSDsluCounter, 29875 mSDsCounter, 0 mSdLazyCounter, 4083 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20921 SdHoareTripleChecker+Valid, 31521 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:13,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20921 Valid, 31521 Invalid, 4273 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 4083 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-23 23:36:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19441 states. [2024-11-23 23:36:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19441 to 16095. [2024-11-23 23:36:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16095 states, 16093 states have (on average 1.2365624805816193) internal successors, (19900), 16094 states have internal predecessors, (19900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:15,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16095 states to 16095 states and 19900 transitions. [2024-11-23 23:36:15,149 INFO L78 Accepts]: Start accepts. Automaton has 16095 states and 19900 transitions. Word has length 106 [2024-11-23 23:36:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:15,149 INFO L471 AbstractCegarLoop]: Abstraction has 16095 states and 19900 transitions. [2024-11-23 23:36:15,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 16095 states and 19900 transitions. [2024-11-23 23:36:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:36:15,151 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:15,151 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-23 23:36:15,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:36:15,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 23:36:15,352 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:15,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:15,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1775421751, now seen corresponding path program 1 times [2024-11-23 23:36:15,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:15,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095385826] [2024-11-23 23:36:15,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:15,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:16,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:36:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095385826] [2024-11-23 23:36:16,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095385826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:36:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769180665] [2024-11-23 23:36:16,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:16,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:16,168 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:16,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:36:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:16,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:36:16,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:18,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:36:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769180665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:36:21,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:36:21,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 44 [2024-11-23 23:36:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417887056] [2024-11-23 23:36:21,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:36:21,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-23 23:36:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:36:21,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-23 23:36:21,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1688, Unknown=0, NotChecked=0, Total=1892 [2024-11-23 23:36:21,715 INFO L87 Difference]: Start difference. First operand 16095 states and 19900 transitions. Second operand has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:27,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:27,775 INFO L93 Difference]: Finished difference Result 37204 states and 45251 transitions. [2024-11-23 23:36:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-23 23:36:27,775 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 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 107 [2024-11-23 23:36:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:27,806 INFO L225 Difference]: With dead ends: 37204 [2024-11-23 23:36:27,806 INFO L226 Difference]: Without dead ends: 26011 [2024-11-23 23:36:27,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1232, Invalid=5088, Unknown=0, NotChecked=0, Total=6320 [2024-11-23 23:36:27,814 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 28734 mSDsluCounter, 19415 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28734 SdHoareTripleChecker+Valid, 20988 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:27,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28734 Valid, 20988 Invalid, 1473 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:36:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26011 states. [2024-11-23 23:36:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26011 to 23679. [2024-11-23 23:36:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23679 states, 23677 states have (on average 1.2202559445875745) internal successors, (28892), 23678 states have internal predecessors, (28892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23679 states to 23679 states and 28892 transitions. [2024-11-23 23:36:30,384 INFO L78 Accepts]: Start accepts. Automaton has 23679 states and 28892 transitions. Word has length 107 [2024-11-23 23:36:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:30,384 INFO L471 AbstractCegarLoop]: Abstraction has 23679 states and 28892 transitions. [2024-11-23 23:36:30,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 23679 states and 28892 transitions. [2024-11-23 23:36:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:36:30,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:30,386 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-23 23:36:30,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 23:36:30,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 23:36:30,586 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:30,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1570064813, now seen corresponding path program 1 times [2024-11-23 23:36:30,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:30,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050348965] [2024-11-23 23:36:30,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:31,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:36:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050348965] [2024-11-23 23:36:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050348965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:36:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852754618] [2024-11-23 23:36:31,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:31,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:31,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:31,300 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:31,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:36:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:31,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:36:31,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:33,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:36:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:35,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852754618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:36:35,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:36:35,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 43 [2024-11-23 23:36:35,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323422610] [2024-11-23 23:36:35,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:36:35,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-23 23:36:35,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:36:35,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-23 23:36:35,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1592, Unknown=0, NotChecked=0, Total=1806 [2024-11-23 23:36:35,833 INFO L87 Difference]: Start difference. First operand 23679 states and 28892 transitions. Second operand has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:41,181 INFO L93 Difference]: Finished difference Result 44285 states and 53691 transitions. [2024-11-23 23:36:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-23 23:36:41,181 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 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 107 [2024-11-23 23:36:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:41,202 INFO L225 Difference]: With dead ends: 44285 [2024-11-23 23:36:41,202 INFO L226 Difference]: Without dead ends: 27265 [2024-11-23 23:36:41,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1021, Invalid=4235, Unknown=0, NotChecked=0, Total=5256 [2024-11-23 23:36:41,212 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 25299 mSDsluCounter, 16317 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25299 SdHoareTripleChecker+Valid, 17892 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:41,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25299 Valid, 17892 Invalid, 1280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:36:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27265 states. [2024-11-23 23:36:44,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27265 to 27096. [2024-11-23 23:36:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27096 states, 27094 states have (on average 1.2139957186092862) internal successors, (32892), 27095 states have internal predecessors, (32892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27096 states to 27096 states and 32892 transitions. [2024-11-23 23:36:44,598 INFO L78 Accepts]: Start accepts. Automaton has 27096 states and 32892 transitions. Word has length 107 [2024-11-23 23:36:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:44,598 INFO L471 AbstractCegarLoop]: Abstraction has 27096 states and 32892 transitions. [2024-11-23 23:36:44,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 27096 states and 32892 transitions. [2024-11-23 23:36:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 23:36:44,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:44,600 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:44,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 23:36:44,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:44,800 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:44,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:44,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1360080118, now seen corresponding path program 1 times [2024-11-23 23:36:44,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:44,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562193615] [2024-11-23 23:36:44,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:44,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:47,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:36:47,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562193615] [2024-11-23 23:36:47,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562193615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:36:47,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512951060] [2024-11-23 23:36:47,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:47,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:47,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:47,336 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:47,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:36:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:47,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-23 23:36:47,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:51,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:36:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:55,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512951060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:36:55,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:36:55,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 19] total 61 [2024-11-23 23:36:55,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437199076] [2024-11-23 23:36:55,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:36:55,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-23 23:36:55,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:36:55,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-23 23:36:55,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=3417, Unknown=0, NotChecked=0, Total=3660 [2024-11-23 23:36:55,574 INFO L87 Difference]: Start difference. First operand 27096 states and 32892 transitions. Second operand has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:37:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:37:29,587 INFO L93 Difference]: Finished difference Result 49311 states and 59508 transitions. [2024-11-23 23:37:29,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-23 23:37:29,588 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 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 108 [2024-11-23 23:37:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:37:29,617 INFO L225 Difference]: With dead ends: 49311 [2024-11-23 23:37:29,617 INFO L226 Difference]: Without dead ends: 40791 [2024-11-23 23:37:29,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9504 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=5157, Invalid=29253, Unknown=0, NotChecked=0, Total=34410 [2024-11-23 23:37:29,625 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 31939 mSDsluCounter, 40306 mSDsCounter, 0 mSdLazyCounter, 3929 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31939 SdHoareTripleChecker+Valid, 41958 SdHoareTripleChecker+Invalid, 4083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 3929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:37:29,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31939 Valid, 41958 Invalid, 4083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 3929 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 23:37:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40791 states. [2024-11-23 23:37:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40791 to 26105. [2024-11-23 23:37:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26105 states, 26103 states have (on average 1.2139600812167184) internal successors, (31688), 26104 states have internal predecessors, (31688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:37:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26105 states to 26105 states and 31688 transitions. [2024-11-23 23:37:32,597 INFO L78 Accepts]: Start accepts. Automaton has 26105 states and 31688 transitions. Word has length 108 [2024-11-23 23:37:32,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:37:32,598 INFO L471 AbstractCegarLoop]: Abstraction has 26105 states and 31688 transitions. [2024-11-23 23:37:32,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:37:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 26105 states and 31688 transitions. [2024-11-23 23:37:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 23:37:32,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:32,600 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-23 23:37:32,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 23:37:32,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:32,801 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:37:32,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1868806128, now seen corresponding path program 1 times [2024-11-23 23:37:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:32,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571784446] [2024-11-23 23:37:32,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:33,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:33,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571784446] [2024-11-23 23:37:33,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571784446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:37:33,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841553879] [2024-11-23 23:37:33,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:33,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:33,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:33,964 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:37:33,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 23:37:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:34,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 23:37:34,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:37:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:35,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:37:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:40,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841553879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:37:40,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:37:40,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 43 [2024-11-23 23:37:40,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418045679] [2024-11-23 23:37:40,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:37:40,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-23 23:37:40,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:40,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-23 23:37:40,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2024-11-23 23:37:40,383 INFO L87 Difference]: Start difference. First operand 26105 states and 31688 transitions. Second operand has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:38:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:38:02,557 INFO L93 Difference]: Finished difference Result 53280 states and 64119 transitions. [2024-11-23 23:38:02,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-23 23:38:02,558 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 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 108 [2024-11-23 23:38:02,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:38:02,599 INFO L225 Difference]: With dead ends: 53280 [2024-11-23 23:38:02,599 INFO L226 Difference]: Without dead ends: 35154 [2024-11-23 23:38:02,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6714 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=3549, Invalid=19707, Unknown=0, NotChecked=0, Total=23256 [2024-11-23 23:38:02,616 INFO L435 NwaCegarLoop]: 1625 mSDtfsCounter, 20465 mSDsluCounter, 29303 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20465 SdHoareTripleChecker+Valid, 30928 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:38:02,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20465 Valid, 30928 Invalid, 2999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 23:38:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35154 states. [2024-11-23 23:38:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35154 to 32785. [2024-11-23 23:38:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32785 states, 32783 states have (on average 1.2039166641246988) internal successors, (39468), 32784 states have internal predecessors, (39468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:38:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32785 states to 32785 states and 39468 transitions. [2024-11-23 23:38:06,589 INFO L78 Accepts]: Start accepts. Automaton has 32785 states and 39468 transitions. Word has length 108 [2024-11-23 23:38:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:38:06,589 INFO L471 AbstractCegarLoop]: Abstraction has 32785 states and 39468 transitions. [2024-11-23 23:38:06,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:38:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 32785 states and 39468 transitions. [2024-11-23 23:38:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 23:38:06,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:38:06,591 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:38:06,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-23 23:38:06,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-23 23:38:06,792 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:38:06,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1776708174, now seen corresponding path program 1 times [2024-11-23 23:38:06,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:06,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385064792] [2024-11-23 23:38:06,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:06,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:38:08,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385064792] [2024-11-23 23:38:08,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385064792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:38:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113939308] [2024-11-23 23:38:08,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:08,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:38:08,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:38:08,656 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:38:08,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 23:38:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:08,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-23 23:38:08,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:38:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 42 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:38:13,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:38:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:38:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113939308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:38:23,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:38:23,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 27] total 75 [2024-11-23 23:38:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475334940] [2024-11-23 23:38:23,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:38:23,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-23 23:38:23,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:23,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-23 23:38:23,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=5044, Unknown=0, NotChecked=0, Total=5550 [2024-11-23 23:38:23,978 INFO L87 Difference]: Start difference. First operand 32785 states and 39468 transitions. Second operand has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:44,736 INFO L93 Difference]: Finished difference Result 63560 states and 75903 transitions. [2024-11-23 23:39:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2024-11-23 23:39:44,737 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 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 108 [2024-11-23 23:39:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:44,772 INFO L225 Difference]: With dead ends: 63560 [2024-11-23 23:39:44,772 INFO L226 Difference]: Without dead ends: 49680 [2024-11-23 23:39:44,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 164 SyntacticMatches, 4 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46582 ImplicationChecksByTransitivity, 73.0s TimeCoverageRelationStatistics Valid=18100, Invalid=97840, Unknown=0, NotChecked=0, Total=115940 [2024-11-23 23:39:44,788 INFO L435 NwaCegarLoop]: 1692 mSDtfsCounter, 22599 mSDsluCounter, 43513 mSDsCounter, 0 mSdLazyCounter, 6830 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22599 SdHoareTripleChecker+Valid, 45205 SdHoareTripleChecker+Invalid, 7021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 6830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:44,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22599 Valid, 45205 Invalid, 7021 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [191 Valid, 6830 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-23 23:39:44,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49680 states. [2024-11-23 23:39:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49680 to 34443. [2024-11-23 23:39:48,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34443 states, 34441 states have (on average 1.2035655178421067) internal successors, (41452), 34442 states have internal predecessors, (41452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34443 states to 34443 states and 41452 transitions. [2024-11-23 23:39:49,021 INFO L78 Accepts]: Start accepts. Automaton has 34443 states and 41452 transitions. Word has length 108 [2024-11-23 23:39:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:49,021 INFO L471 AbstractCegarLoop]: Abstraction has 34443 states and 41452 transitions. [2024-11-23 23:39:49,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 34443 states and 41452 transitions. [2024-11-23 23:39:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-23 23:39:49,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:49,024 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:49,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 23:39:49,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-23 23:39:49,224 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:49,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:49,225 INFO L85 PathProgramCache]: Analyzing trace with hash -391083059, now seen corresponding path program 1 times [2024-11-23 23:39:49,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:49,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138249521] [2024-11-23 23:39:49,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:49,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:49,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138249521] [2024-11-23 23:39:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138249521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:49,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:49,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300402267] [2024-11-23 23:39:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:49,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:39:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:49,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:39:49,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:49,368 INFO L87 Difference]: Start difference. First operand 34443 states and 41452 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:57,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:57,782 INFO L93 Difference]: Finished difference Result 38237 states and 47557 transitions. [2024-11-23 23:39:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:39:57,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2024-11-23 23:39:57,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:57,820 INFO L225 Difference]: With dead ends: 38237 [2024-11-23 23:39:57,820 INFO L226 Difference]: Without dead ends: 35945 [2024-11-23 23:39:57,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:57,827 INFO L435 NwaCegarLoop]: 763 mSDtfsCounter, 772 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:57,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 847 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-23 23:39:57,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35945 states. [2024-11-23 23:40:01,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35945 to 35945. [2024-11-23 23:40:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35945 states, 35943 states have (on average 1.197368054975934) internal successors, (43037), 35944 states have internal predecessors, (43037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35945 states to 35945 states and 43037 transitions. [2024-11-23 23:40:01,990 INFO L78 Accepts]: Start accepts. Automaton has 35945 states and 43037 transitions. Word has length 138 [2024-11-23 23:40:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:40:01,990 INFO L471 AbstractCegarLoop]: Abstraction has 35945 states and 43037 transitions. [2024-11-23 23:40:01,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 35945 states and 43037 transitions. [2024-11-23 23:40:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 23:40:01,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:40:01,993 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:40:01,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 23:40:01,993 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:40:01,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:01,993 INFO L85 PathProgramCache]: Analyzing trace with hash 289672907, now seen corresponding path program 1 times [2024-11-23 23:40:01,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:01,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41082283] [2024-11-23 23:40:01,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:01,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 67 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:03,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:03,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41082283] [2024-11-23 23:40:03,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41082283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:40:03,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160465491] [2024-11-23 23:40:03,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:03,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:03,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:40:03,305 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:40:03,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 23:40:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:03,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:40:03,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:40:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 80 proven. 147 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:40:04,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:40:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 190 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:40:06,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160465491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:40:06,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:40:06,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 43 [2024-11-23 23:40:06,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617285205] [2024-11-23 23:40:06,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:40:06,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-23 23:40:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:06,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-23 23:40:06,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2024-11-23 23:40:06,843 INFO L87 Difference]: Start difference. First operand 35945 states and 43037 transitions. Second operand has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:40:21,317 INFO L93 Difference]: Finished difference Result 49346 states and 59123 transitions. [2024-11-23 23:40:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-23 23:40:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 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 146 [2024-11-23 23:40:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:40:21,342 INFO L225 Difference]: With dead ends: 49346 [2024-11-23 23:40:21,342 INFO L226 Difference]: Without dead ends: 36039 [2024-11-23 23:40:21,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4283 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3290, Invalid=13480, Unknown=0, NotChecked=0, Total=16770 [2024-11-23 23:40:21,349 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 30996 mSDsluCounter, 19465 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30996 SdHoareTripleChecker+Valid, 21008 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:40:21,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30996 Valid, 21008 Invalid, 2436 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:40:21,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36039 states. [2024-11-23 23:40:24,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36039 to 24300. [2024-11-23 23:40:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24300 states, 24298 states have (on average 1.1989464153428266) internal successors, (29132), 24299 states have internal predecessors, (29132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24300 states to 24300 states and 29132 transitions. [2024-11-23 23:40:24,751 INFO L78 Accepts]: Start accepts. Automaton has 24300 states and 29132 transitions. Word has length 146 [2024-11-23 23:40:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:40:24,751 INFO L471 AbstractCegarLoop]: Abstraction has 24300 states and 29132 transitions. [2024-11-23 23:40:24,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 24300 states and 29132 transitions. [2024-11-23 23:40:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 23:40:24,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:40:24,754 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:40:24,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-23 23:40:24,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-23 23:40:24,954 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:40:24,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1444097760, now seen corresponding path program 1 times [2024-11-23 23:40:24,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:24,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772436879] [2024-11-23 23:40:24,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:24,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:26,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772436879] [2024-11-23 23:40:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772436879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:40:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144704467] [2024-11-23 23:40:26,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:26,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:26,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:40:26,705 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:40:26,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 23:40:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:26,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-23 23:40:26,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:40:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 57 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:30,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:40:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:36,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144704467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:40:36,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:40:36,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 67 [2024-11-23 23:40:36,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217661820] [2024-11-23 23:40:36,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:40:36,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-23 23:40:36,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:36,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-23 23:40:36,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4065, Unknown=0, NotChecked=0, Total=4422 [2024-11-23 23:40:36,521 INFO L87 Difference]: Start difference. First operand 24300 states and 29132 transitions. Second operand has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:09,572 INFO L93 Difference]: Finished difference Result 35386 states and 42196 transitions. [2024-11-23 23:41:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-23 23:41:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 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 147 [2024-11-23 23:41:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:09,594 INFO L225 Difference]: With dead ends: 35386 [2024-11-23 23:41:09,594 INFO L226 Difference]: Without dead ends: 18926 [2024-11-23 23:41:09,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11983 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=7429, Invalid=32371, Unknown=0, NotChecked=0, Total=39800 [2024-11-23 23:41:09,604 INFO L435 NwaCegarLoop]: 1556 mSDtfsCounter, 37852 mSDsluCounter, 27755 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37852 SdHoareTripleChecker+Valid, 29311 SdHoareTripleChecker+Invalid, 3739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:09,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37852 Valid, 29311 Invalid, 3739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [141 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-23 23:41:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18926 states. [2024-11-23 23:41:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18926 to 17280. [2024-11-23 23:41:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17280 states, 17278 states have (on average 1.2082416946405834) internal successors, (20876), 17279 states have internal predecessors, (20876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17280 states to 17280 states and 20876 transitions. [2024-11-23 23:41:11,910 INFO L78 Accepts]: Start accepts. Automaton has 17280 states and 20876 transitions. Word has length 147 [2024-11-23 23:41:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:11,910 INFO L471 AbstractCegarLoop]: Abstraction has 17280 states and 20876 transitions. [2024-11-23 23:41:11,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 17280 states and 20876 transitions. [2024-11-23 23:41:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 23:41:11,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:11,912 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:41:11,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-23 23:41:12,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-23 23:41:12,112 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:12,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1800837796, now seen corresponding path program 1 times [2024-11-23 23:41:12,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:12,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722979386] [2024-11-23 23:41:12,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:12,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:15,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:15,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722979386] [2024-11-23 23:41:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722979386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:41:15,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733680389] [2024-11-23 23:41:15,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:15,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:15,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:15,499 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:41:15,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 23:41:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:15,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-23 23:41:15,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:41:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 73 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:20,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:41:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:29,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733680389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:41:29,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:41:29,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 27] total 85 [2024-11-23 23:41:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690596443] [2024-11-23 23:41:29,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:41:29,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-23 23:41:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:29,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-23 23:41:29,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=6643, Unknown=0, NotChecked=0, Total=7140 [2024-11-23 23:41:29,012 INFO L87 Difference]: Start difference. First operand 17280 states and 20876 transitions. Second operand has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:39,011 INFO L93 Difference]: Finished difference Result 19888 states and 23929 transitions. [2024-11-23 23:42:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-23 23:42:39,012 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 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 147 [2024-11-23 23:42:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:39,026 INFO L225 Difference]: With dead ends: 19888 [2024-11-23 23:42:39,026 INFO L226 Difference]: Without dead ends: 18238 [2024-11-23 23:42:39,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14063 ImplicationChecksByTransitivity, 66.5s TimeCoverageRelationStatistics Valid=7771, Invalid=39101, Unknown=0, NotChecked=0, Total=46872 [2024-11-23 23:42:39,031 INFO L435 NwaCegarLoop]: 1564 mSDtfsCounter, 45117 mSDsluCounter, 41867 mSDsCounter, 0 mSdLazyCounter, 5191 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45117 SdHoareTripleChecker+Valid, 43431 SdHoareTripleChecker+Invalid, 5503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 5191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:39,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45117 Valid, 43431 Invalid, 5503 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [312 Valid, 5191 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-23 23:42:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2024-11-23 23:42:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 17678. [2024-11-23 23:42:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17678 states, 17676 states have (on average 1.2079656030776194) internal successors, (21352), 17677 states have internal predecessors, (21352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17678 states to 17678 states and 21352 transitions. [2024-11-23 23:42:41,523 INFO L78 Accepts]: Start accepts. Automaton has 17678 states and 21352 transitions. Word has length 147 [2024-11-23 23:42:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:41,523 INFO L471 AbstractCegarLoop]: Abstraction has 17678 states and 21352 transitions. [2024-11-23 23:42:41,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 17678 states and 21352 transitions. [2024-11-23 23:42:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-23 23:42:41,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:41,526 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:42:41,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-23 23:42:41,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-23 23:42:41,727 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:41,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash 355894557, now seen corresponding path program 1 times [2024-11-23 23:42:41,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:41,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77222103] [2024-11-23 23:42:41,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:41,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77222103] [2024-11-23 23:42:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77222103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237157692] [2024-11-23 23:42:43,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:43,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:43,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:43,610 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:43,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 23:42:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:43,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-23 23:42:43,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:46,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:42:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:50,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237157692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:42:50,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:42:50,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 18] total 60 [2024-11-23 23:42:50,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577463619] [2024-11-23 23:42:50,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:42:50,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-23 23:42:50,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:50,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-23 23:42:50,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3287, Unknown=0, NotChecked=0, Total=3540 [2024-11-23 23:42:50,790 INFO L87 Difference]: Start difference. First operand 17678 states and 21352 transitions. Second operand has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:12,425 INFO L93 Difference]: Finished difference Result 17919 states and 21602 transitions. [2024-11-23 23:43:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-23 23:43:12,426 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 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 148 [2024-11-23 23:43:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:12,433 INFO L225 Difference]: With dead ends: 17919 [2024-11-23 23:43:12,433 INFO L226 Difference]: Without dead ends: 6947 [2024-11-23 23:43:12,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8491 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=5908, Invalid=25954, Unknown=0, NotChecked=0, Total=31862 [2024-11-23 23:43:12,438 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 32119 mSDsluCounter, 25807 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32119 SdHoareTripleChecker+Valid, 27345 SdHoareTripleChecker+Invalid, 3132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:12,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32119 Valid, 27345 Invalid, 3132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3039 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:43:12,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2024-11-23 23:43:12,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 6324. [2024-11-23 23:43:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6324 states, 6322 states have (on average 1.2522935779816513) internal successors, (7917), 6323 states have internal predecessors, (7917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 7917 transitions. [2024-11-23 23:43:12,969 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 7917 transitions. Word has length 148 [2024-11-23 23:43:12,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:12,970 INFO L471 AbstractCegarLoop]: Abstraction has 6324 states and 7917 transitions. [2024-11-23 23:43:12,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 7917 transitions. [2024-11-23 23:43:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-23 23:43:12,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:12,971 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:43:12,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-23 23:43:13,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-23 23:43:13,172 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:13,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:13,172 INFO L85 PathProgramCache]: Analyzing trace with hash -970975155, now seen corresponding path program 1 times [2024-11-23 23:43:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:13,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312868164] [2024-11-23 23:43:13,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:13,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 23:43:13,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:13,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312868164] [2024-11-23 23:43:13,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312868164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:13,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184505024] [2024-11-23 23:43:13,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:43:13,345 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:43:13,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-23 23:43:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:13,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:43:13,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 23:43:13,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:43:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 92 proven. 134 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 23:43:14,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184505024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:43:14,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:43:14,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-11-23 23:43:14,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870225106] [2024-11-23 23:43:14,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:43:14,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:43:14,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:14,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:43:14,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:43:14,357 INFO L87 Difference]: Start difference. First operand 6324 states and 7917 transitions. Second operand has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:15,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:15,263 INFO L93 Difference]: Finished difference Result 10792 states and 13290 transitions. [2024-11-23 23:43:15,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:43:15,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 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 148 [2024-11-23 23:43:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:15,272 INFO L225 Difference]: With dead ends: 10792 [2024-11-23 23:43:15,272 INFO L226 Difference]: Without dead ends: 8709 [2024-11-23 23:43:15,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:43:15,275 INFO L435 NwaCegarLoop]: 1534 mSDtfsCounter, 1667 mSDsluCounter, 6245 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 7779 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:15,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1667 Valid, 7779 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:43:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8709 states. [2024-11-23 23:43:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8709 to 8552. [2024-11-23 23:43:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8552 states, 8550 states have (on average 1.2042105263157894) internal successors, (10296), 8551 states have internal predecessors, (10296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8552 states to 8552 states and 10296 transitions. [2024-11-23 23:43:16,079 INFO L78 Accepts]: Start accepts. Automaton has 8552 states and 10296 transitions. Word has length 148 [2024-11-23 23:43:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:16,079 INFO L471 AbstractCegarLoop]: Abstraction has 8552 states and 10296 transitions. [2024-11-23 23:43:16,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 8552 states and 10296 transitions. [2024-11-23 23:43:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-23 23:43:16,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:16,080 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:43:16,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-23 23:43:16,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-23 23:43:16,281 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:16,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:16,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2046949756, now seen corresponding path program 1 times [2024-11-23 23:43:16,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:16,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176028890] [2024-11-23 23:43:16,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:16,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-23 23:43:16,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:16,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176028890] [2024-11-23 23:43:16,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176028890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:43:16,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:43:16,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:43:16,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795059299] [2024-11-23 23:43:16,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:43:16,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:43:16,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:16,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:43:16,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:43:16,404 INFO L87 Difference]: Start difference. First operand 8552 states and 10296 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:17,175 INFO L93 Difference]: Finished difference Result 9509 states and 11353 transitions. [2024-11-23 23:43:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:43:17,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 149 [2024-11-23 23:43:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:17,182 INFO L225 Difference]: With dead ends: 9509 [2024-11-23 23:43:17,183 INFO L226 Difference]: Without dead ends: 8071 [2024-11-23 23:43:17,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:43:17,185 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 2936 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:17,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2936 Valid, 3023 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:43:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2024-11-23 23:43:17,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 7837. [2024-11-23 23:43:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7837 states, 7835 states have (on average 1.2085513720485004) internal successors, (9469), 7836 states have internal predecessors, (9469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7837 states to 7837 states and 9469 transitions. [2024-11-23 23:43:17,854 INFO L78 Accepts]: Start accepts. Automaton has 7837 states and 9469 transitions. Word has length 149 [2024-11-23 23:43:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:17,855 INFO L471 AbstractCegarLoop]: Abstraction has 7837 states and 9469 transitions. [2024-11-23 23:43:17,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 7837 states and 9469 transitions. [2024-11-23 23:43:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-23 23:43:17,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:17,856 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:43:17,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-23 23:43:17,856 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:17,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1345885178, now seen corresponding path program 1 times [2024-11-23 23:43:17,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:17,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526930368] [2024-11-23 23:43:17,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:19,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526930368] [2024-11-23 23:43:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526930368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891262477] [2024-11-23 23:43:19,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:19,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:19,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:43:19,252 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:43:19,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-23 23:43:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:19,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-23 23:43:19,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:21,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:43:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:31,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891262477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:43:31,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:43:31,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 64 [2024-11-23 23:43:31,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259239508] [2024-11-23 23:43:31,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:43:31,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-23 23:43:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:31,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-23 23:43:31,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-11-23 23:43:31,284 INFO L87 Difference]: Start difference. First operand 7837 states and 9469 transitions. Second operand has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:46,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:46,064 INFO L93 Difference]: Finished difference Result 9158 states and 10910 transitions. [2024-11-23 23:43:46,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-23 23:43:46,064 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 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 149 [2024-11-23 23:43:46,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:46,071 INFO L225 Difference]: With dead ends: 9158 [2024-11-23 23:43:46,071 INFO L226 Difference]: Without dead ends: 8808 [2024-11-23 23:43:46,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 257 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5367 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=4208, Invalid=16384, Unknown=0, NotChecked=0, Total=20592 [2024-11-23 23:43:46,075 INFO L435 NwaCegarLoop]: 1529 mSDtfsCounter, 31332 mSDsluCounter, 25143 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31332 SdHoareTripleChecker+Valid, 26672 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:46,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31332 Valid, 26672 Invalid, 2448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-23 23:43:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8808 states. [2024-11-23 23:43:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8808 to 7684. [2024-11-23 23:43:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7684 states, 7682 states have (on average 1.211273105961989) internal successors, (9305), 7683 states have internal predecessors, (9305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7684 states to 7684 states and 9305 transitions. [2024-11-23 23:43:46,861 INFO L78 Accepts]: Start accepts. Automaton has 7684 states and 9305 transitions. Word has length 149 [2024-11-23 23:43:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:46,861 INFO L471 AbstractCegarLoop]: Abstraction has 7684 states and 9305 transitions. [2024-11-23 23:43:46,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 7684 states and 9305 transitions. [2024-11-23 23:43:46,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-23 23:43:46,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:46,862 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:43:46,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-23 23:43:47,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-23 23:43:47,063 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:47,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:47,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1650018584, now seen corresponding path program 1 times [2024-11-23 23:43:47,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:47,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383768327] [2024-11-23 23:43:47,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:47,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-23 23:43:47,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:47,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383768327] [2024-11-23 23:43:47,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383768327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:43:47,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:43:47,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:43:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399080629] [2024-11-23 23:43:47,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:43:47,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:43:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:47,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:43:47,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:43:47,178 INFO L87 Difference]: Start difference. First operand 7684 states and 9305 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2024-11-23 23:43:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:47,902 INFO L93 Difference]: Finished difference Result 8543 states and 10280 transitions. [2024-11-23 23:43:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:43:47,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 149 [2024-11-23 23:43:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:47,910 INFO L225 Difference]: With dead ends: 8543 [2024-11-23 23:43:47,910 INFO L226 Difference]: Without dead ends: 7632 [2024-11-23 23:43:47,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:43:47,912 INFO L435 NwaCegarLoop]: 1492 mSDtfsCounter, 2921 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2921 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:47,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2921 Valid, 3048 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:43:47,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7632 states. [2024-11-23 23:43:48,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7632 to 7630. [2024-11-23 23:43:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7630 states, 7628 states have (on average 1.2080492920818038) internal successors, (9215), 7629 states have internal predecessors, (9215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:48,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7630 states to 7630 states and 9215 transitions. [2024-11-23 23:43:48,630 INFO L78 Accepts]: Start accepts. Automaton has 7630 states and 9215 transitions. Word has length 149 [2024-11-23 23:43:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:48,631 INFO L471 AbstractCegarLoop]: Abstraction has 7630 states and 9215 transitions. [2024-11-23 23:43:48,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2024-11-23 23:43:48,631 INFO L276 IsEmpty]: Start isEmpty. Operand 7630 states and 9215 transitions. [2024-11-23 23:43:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-23 23:43:48,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:48,633 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:43:48,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-23 23:43:48,633 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:48,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1623880358, now seen corresponding path program 1 times [2024-11-23 23:43:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:48,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386409152] [2024-11-23 23:43:48,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:48,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:50,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386409152] [2024-11-23 23:43:50,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386409152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267310728] [2024-11-23 23:43:50,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:50,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:50,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:43:50,364 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:43:50,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa653c41-9fdc-4d2d-bb0b-6fc5a1f63bc3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-23 23:43:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:50,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-23 23:43:50,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:55,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 49 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:22,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267310728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:22,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:22,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 35, 38] total 96 [2024-11-23 23:44:22,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100087573] [2024-11-23 23:44:22,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:22,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-23 23:44:22,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:22,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-23 23:44:22,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1034, Invalid=8086, Unknown=0, NotChecked=0, Total=9120 [2024-11-23 23:44:22,069 INFO L87 Difference]: Start difference. First operand 7630 states and 9215 transitions. Second operand has 96 states, 96 states have (on average 4.375) internal successors, (420), 96 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)