./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-58.i --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_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/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_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/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_ed6ba7ee-045c-4869-b257-fa207937fee9/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 588d5c1b74b435c7b48e7846cdcbcdd05a5e0ef56f650b6f67ae59d316b919cf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:18:45,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:18:45,925 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:18:45,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:18:45,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:18:46,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:18:46,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:18:46,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:18:46,008 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:18:46,008 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:18:46,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:18:46,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:18:46,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:18:46,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:18:46,009 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:18:46,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:18:46,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:18:46,010 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:18:46,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:18:46,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:18:46,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:18:46,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:18:46,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:18:46,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:18:46,011 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:18:46,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:18:46,011 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:18:46,012 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:18:46,012 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:18:46,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:18:46,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:18:46,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:18:46,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:18:46,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:18:46,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:18:46,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:18:46,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:18:46,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:18:46,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:18:46,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:18:46,014 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:18:46,015 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:18:46,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:18:46,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:18:46,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:18:46,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:18:46,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:18:46,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:18:46,016 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_ed6ba7ee-045c-4869-b257-fa207937fee9/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 -> 588d5c1b74b435c7b48e7846cdcbcdd05a5e0ef56f650b6f67ae59d316b919cf [2024-11-24 01:18:46,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:18:46,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:18:46,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:18:46,466 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:18:46,467 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:18:46,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-58.i [2024-11-24 01:18:50,164 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/data/e34a12778/03367e8db33f42baa3fbffd162372e96/FLAG3e8a08b61 [2024-11-24 01:18:50,571 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:18:50,572 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-58.i [2024-11-24 01:18:50,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/data/e34a12778/03367e8db33f42baa3fbffd162372e96/FLAG3e8a08b61 [2024-11-24 01:18:50,603 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/data/e34a12778/03367e8db33f42baa3fbffd162372e96 [2024-11-24 01:18:50,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:18:50,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:18:50,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:18:50,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:18:50,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:18:50,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:50" (1/1) ... [2024-11-24 01:18:50,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6586f184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:50, skipping insertion in model container [2024-11-24 01:18:50,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:50" (1/1) ... [2024-11-24 01:18:50,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:18:50,879 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_ed6ba7ee-045c-4869-b257-fa207937fee9/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-58.i[916,929] [2024-11-24 01:18:50,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:18:50,991 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:18:51,004 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_ed6ba7ee-045c-4869-b257-fa207937fee9/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-58.i[916,929] [2024-11-24 01:18:51,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:18:51,086 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:18:51,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51 WrapperNode [2024-11-24 01:18:51,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:18:51,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:18:51,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:18:51,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:18:51,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,197 INFO L138 Inliner]: procedures = 26, calls = 156, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 443 [2024-11-24 01:18:51,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:18:51,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:18:51,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:18:51,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:18:51,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,226 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,254 INFO L175 MemorySlicer]: Split 125 memory accesses to 6 slices as follows [2, 6, 11, 7, 74, 25]. 59 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 6, 2]. The 15 writes are split as follows [0, 1, 1, 3, 8, 2]. [2024-11-24 01:18:51,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,279 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:18:51,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:18:51,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:18:51,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:18:51,320 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (1/1) ... [2024-11-24 01:18:51,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:18:51,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:18:51,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:18:51,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:18:51,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:18:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:18:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:18:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 01:18:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 01:18:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 01:18:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 01:18:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:18:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:18:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 01:18:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 01:18:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 01:18:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 01:18:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:18:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:18:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:18:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:18:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:18:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 01:18:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 01:18:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 01:18:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:18:51,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:18:51,604 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:18:51,607 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:18:52,354 INFO L? ?]: Removed 126 outVars from TransFormulas that were not future-live. [2024-11-24 01:18:52,354 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:18:52,405 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:18:52,409 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:18:52,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:52 BoogieIcfgContainer [2024-11-24 01:18:52,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:18:52,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:18:52,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:18:52,421 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:18:52,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:18:50" (1/3) ... [2024-11-24 01:18:52,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325d0dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:52, skipping insertion in model container [2024-11-24 01:18:52,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:51" (2/3) ... [2024-11-24 01:18:52,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325d0dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:52, skipping insertion in model container [2024-11-24 01:18:52,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:52" (3/3) ... [2024-11-24 01:18:52,426 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-58.i [2024-11-24 01:18:52,447 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:18:52,450 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-58.i that has 2 procedures, 92 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:18:52,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:18:52,561 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;@29540d31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:18:52,564 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:18:52,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 75 states have internal predecessors, (103), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-24 01:18:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:18:52,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:52,592 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:52,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:52,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash 355485762, now seen corresponding path program 1 times [2024-11-24 01:18:52,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:52,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635245888] [2024-11-24 01:18:52,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:52,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-24 01:18:53,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:53,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635245888] [2024-11-24 01:18:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635245888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:18:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094205901] [2024-11-24 01:18:53,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:53,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:18:53,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:18:53,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:18:53,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:18:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:53,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:18:53,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:18:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-24 01:18:53,493 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:18:53,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094205901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:53,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:18:53,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:18:53,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42056849] [2024-11-24 01:18:53,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:53,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:18:53,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:53,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:18:53,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:18:53,538 INFO L87 Difference]: Start difference. First operand has 92 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 75 states have internal predecessors, (103), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:18:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:53,583 INFO L93 Difference]: Finished difference Result 173 states and 269 transitions. [2024-11-24 01:18:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:18:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-24 01:18:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:53,593 INFO L225 Difference]: With dead ends: 173 [2024-11-24 01:18:53,593 INFO L226 Difference]: Without dead ends: 84 [2024-11-24 01:18:53,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:18:53,601 INFO L435 NwaCegarLoop]: 118 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, 118 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:53,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-24 01:18:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-24 01:18:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 67 states have internal predecessors, (88), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-24 01:18:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2024-11-24 01:18:53,654 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 116 [2024-11-24 01:18:53,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:53,654 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2024-11-24 01:18:53,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:18:53,655 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2024-11-24 01:18:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:18:53,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:53,659 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:53,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:18:53,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:18:53,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:53,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:53,861 INFO L85 PathProgramCache]: Analyzing trace with hash -129349408, now seen corresponding path program 1 times [2024-11-24 01:18:53,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089272572] [2024-11-24 01:18:53,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:53,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:18:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:54,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089272572] [2024-11-24 01:18:54,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089272572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:54,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:54,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:18:54,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379307736] [2024-11-24 01:18:54,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:54,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:18:54,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:54,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:18:54,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:54,485 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:18:54,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:54,541 INFO L93 Difference]: Finished difference Result 168 states and 237 transitions. [2024-11-24 01:18:54,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:18:54,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2024-11-24 01:18:54,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:54,545 INFO L225 Difference]: With dead ends: 168 [2024-11-24 01:18:54,545 INFO L226 Difference]: Without dead ends: 87 [2024-11-24 01:18:54,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:54,547 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 1 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:54,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 336 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-24 01:18:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-11-24 01:18:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 69 states have internal predecessors, (90), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-24 01:18:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2024-11-24 01:18:54,573 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 116 [2024-11-24 01:18:54,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:54,576 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2024-11-24 01:18:54,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:18:54,576 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2024-11-24 01:18:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:18:54,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:54,581 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:54,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:18:54,582 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:54,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash -127502366, now seen corresponding path program 1 times [2024-11-24 01:18:54,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:54,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686781955] [2024-11-24 01:18:54,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:54,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:18:57,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686781955] [2024-11-24 01:18:57,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686781955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:57,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:57,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:18:57,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305688269] [2024-11-24 01:18:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:57,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:18:57,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:57,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:18:57,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:18:57,205 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:18:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:57,845 INFO L93 Difference]: Finished difference Result 240 states and 335 transitions. [2024-11-24 01:18:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:18:57,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-24 01:18:57,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:57,849 INFO L225 Difference]: With dead ends: 240 [2024-11-24 01:18:57,849 INFO L226 Difference]: Without dead ends: 157 [2024-11-24 01:18:57,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:18:57,851 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 87 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:57,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 629 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:18:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-24 01:18:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2024-11-24 01:18:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 125 states have (on average 1.304) internal successors, (163), 126 states have internal predecessors, (163), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-24 01:18:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 215 transitions. [2024-11-24 01:18:57,874 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 215 transitions. Word has length 116 [2024-11-24 01:18:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:57,875 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 215 transitions. [2024-11-24 01:18:57,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:18:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 215 transitions. [2024-11-24 01:18:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:18:57,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:57,878 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:57,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:18:57,879 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:57,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 130663072, now seen corresponding path program 1 times [2024-11-24 01:18:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670122514] [2024-11-24 01:18:57,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:00,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:00,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670122514] [2024-11-24 01:19:00,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670122514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:00,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:00,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:19:00,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266485332] [2024-11-24 01:19:00,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:00,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:19:00,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:00,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:19:00,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:19:00,788 INFO L87 Difference]: Start difference. First operand 154 states and 215 transitions. Second operand has 10 states, 6 states have (on average 7.333333333333333) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-24 01:19:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:01,861 INFO L93 Difference]: Finished difference Result 335 states and 463 transitions. [2024-11-24 01:19:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:19:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 6 states have (on average 7.333333333333333) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 5 states have call successors, (15) Word has length 116 [2024-11-24 01:19:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:01,866 INFO L225 Difference]: With dead ends: 335 [2024-11-24 01:19:01,866 INFO L226 Difference]: Without dead ends: 184 [2024-11-24 01:19:01,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:19:01,868 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 87 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:01,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 584 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:19:01,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-24 01:19:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 172. [2024-11-24 01:19:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 136 states have (on average 1.2720588235294117) internal successors, (173), 138 states have internal predecessors, (173), 31 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:19:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 235 transitions. [2024-11-24 01:19:01,897 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 235 transitions. Word has length 116 [2024-11-24 01:19:01,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:01,897 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 235 transitions. [2024-11-24 01:19:01,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 6 states have (on average 7.333333333333333) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-24 01:19:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 235 transitions. [2024-11-24 01:19:01,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:19:01,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:01,900 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:01,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:19:01,900 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:01,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash 602238711, now seen corresponding path program 1 times [2024-11-24 01:19:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:01,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977144794] [2024-11-24 01:19:01,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:02,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977144794] [2024-11-24 01:19:02,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977144794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:02,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:02,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:19:02,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890284622] [2024-11-24 01:19:02,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:02,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:19:02,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:02,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:19:02,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:19:02,441 INFO L87 Difference]: Start difference. First operand 172 states and 235 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:19:02,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:02,825 INFO L93 Difference]: Finished difference Result 402 states and 554 transitions. [2024-11-24 01:19:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:19:02,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2024-11-24 01:19:02,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:02,830 INFO L225 Difference]: With dead ends: 402 [2024-11-24 01:19:02,833 INFO L226 Difference]: Without dead ends: 248 [2024-11-24 01:19:02,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:19:02,835 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 105 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:02,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 525 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:19:02,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-24 01:19:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2024-11-24 01:19:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 194 states have (on average 1.268041237113402) internal successors, (246), 196 states have internal predecessors, (246), 46 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-24 01:19:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 338 transitions. [2024-11-24 01:19:02,887 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 338 transitions. Word has length 116 [2024-11-24 01:19:02,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:02,888 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 338 transitions. [2024-11-24 01:19:02,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:19:02,888 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 338 transitions. [2024-11-24 01:19:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:19:02,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:02,891 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:02,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:19:02,891 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:02,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:02,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1715850268, now seen corresponding path program 1 times [2024-11-24 01:19:02,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:02,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667442223] [2024-11-24 01:19:02,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:02,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667442223] [2024-11-24 01:19:04,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667442223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:04,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:04,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:19:04,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277929427] [2024-11-24 01:19:04,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:04,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:19:04,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:04,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:19:04,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:19:04,721 INFO L87 Difference]: Start difference. First operand 246 states and 338 transitions. Second operand has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:19:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:05,822 INFO L93 Difference]: Finished difference Result 528 states and 726 transitions. [2024-11-24 01:19:05,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:19:05,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) Word has length 116 [2024-11-24 01:19:05,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:05,825 INFO L225 Difference]: With dead ends: 528 [2024-11-24 01:19:05,826 INFO L226 Difference]: Without dead ends: 300 [2024-11-24 01:19:05,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:19:05,830 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 81 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:05,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 798 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:19:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-24 01:19:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2024-11-24 01:19:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 239 states have (on average 1.2761506276150627) internal successors, (305), 242 states have internal predecessors, (305), 51 states have call successors, (51), 6 states have call predecessors, (51), 6 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-24 01:19:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 407 transitions. [2024-11-24 01:19:05,907 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 407 transitions. Word has length 116 [2024-11-24 01:19:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:05,908 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 407 transitions. [2024-11-24 01:19:05,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:19:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 407 transitions. [2024-11-24 01:19:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:19:05,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:05,914 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:05,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:19:05,915 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:05,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1457684830, now seen corresponding path program 1 times [2024-11-24 01:19:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:05,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997267850] [2024-11-24 01:19:05,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:05,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:07,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:07,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997267850] [2024-11-24 01:19:07,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997267850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:07,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:07,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:19:07,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343349886] [2024-11-24 01:19:07,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:07,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:19:07,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:07,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:19:07,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:19:07,467 INFO L87 Difference]: Start difference. First operand 297 states and 407 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:19:08,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:08,076 INFO L93 Difference]: Finished difference Result 579 states and 794 transitions. [2024-11-24 01:19:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:19:08,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-24 01:19:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:08,079 INFO L225 Difference]: With dead ends: 579 [2024-11-24 01:19:08,079 INFO L226 Difference]: Without dead ends: 300 [2024-11-24 01:19:08,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:19:08,081 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 63 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:08,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 825 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:19:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-24 01:19:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2024-11-24 01:19:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 239 states have (on average 1.2719665271966527) internal successors, (304), 242 states have internal predecessors, (304), 51 states have call successors, (51), 6 states have call predecessors, (51), 6 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-24 01:19:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 406 transitions. [2024-11-24 01:19:08,143 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 406 transitions. Word has length 116 [2024-11-24 01:19:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:08,144 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 406 transitions. [2024-11-24 01:19:08,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:19:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 406 transitions. [2024-11-24 01:19:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 01:19:08,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:08,146 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:08,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:19:08,147 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:08,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash 671172388, now seen corresponding path program 1 times [2024-11-24 01:19:08,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:08,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500369143] [2024-11-24 01:19:08,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:08,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:08,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500369143] [2024-11-24 01:19:08,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500369143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:08,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:08,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:19:08,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846257769] [2024-11-24 01:19:08,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:08,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:19:08,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:08,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:19:08,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:19:08,560 INFO L87 Difference]: Start difference. First operand 297 states and 406 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:19:08,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:08,870 INFO L93 Difference]: Finished difference Result 562 states and 768 transitions. [2024-11-24 01:19:08,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:19:08,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2024-11-24 01:19:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:08,873 INFO L225 Difference]: With dead ends: 562 [2024-11-24 01:19:08,874 INFO L226 Difference]: Without dead ends: 250 [2024-11-24 01:19:08,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:19:08,875 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 106 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:08,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 437 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:19:08,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-24 01:19:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2024-11-24 01:19:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 195 states have (on average 1.235897435897436) internal successors, (241), 197 states have internal predecessors, (241), 46 states have call successors, (46), 6 states have call predecessors, (46), 6 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-24 01:19:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 333 transitions. [2024-11-24 01:19:08,917 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 333 transitions. Word has length 117 [2024-11-24 01:19:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:08,917 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 333 transitions. [2024-11-24 01:19:08,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:19:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 333 transitions. [2024-11-24 01:19:08,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 01:19:08,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:08,920 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:08,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:19:08,920 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:08,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:08,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1400913465, now seen corresponding path program 1 times [2024-11-24 01:19:08,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:08,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506099339] [2024-11-24 01:19:08,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:08,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:10,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:10,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506099339] [2024-11-24 01:19:10,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506099339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:10,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:10,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:19:10,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006355066] [2024-11-24 01:19:10,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:10,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:19:10,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:10,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:19:10,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:19:10,126 INFO L87 Difference]: Start difference. First operand 248 states and 333 transitions. Second operand has 8 states, 5 states have (on average 9.0) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:19:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:10,866 INFO L93 Difference]: Finished difference Result 541 states and 729 transitions. [2024-11-24 01:19:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:19:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 9.0) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2024-11-24 01:19:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:10,872 INFO L225 Difference]: With dead ends: 541 [2024-11-24 01:19:10,872 INFO L226 Difference]: Without dead ends: 311 [2024-11-24 01:19:10,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:19:10,875 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 76 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:10,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 480 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:19:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-24 01:19:10,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 308. [2024-11-24 01:19:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 245 states have (on average 1.2448979591836735) internal successors, (305), 248 states have internal predecessors, (305), 55 states have call successors, (55), 7 states have call predecessors, (55), 7 states have return successors, (55), 52 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-24 01:19:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 415 transitions. [2024-11-24 01:19:10,938 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 415 transitions. Word has length 117 [2024-11-24 01:19:10,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:10,940 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 415 transitions. [2024-11-24 01:19:10,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 9.0) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:19:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 415 transitions. [2024-11-24 01:19:10,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 01:19:10,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:10,942 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:10,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:19:10,942 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:10,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:10,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1142748027, now seen corresponding path program 1 times [2024-11-24 01:19:10,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:10,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957015789] [2024-11-24 01:19:10,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:10,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:12,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:12,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957015789] [2024-11-24 01:19:12,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957015789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:12,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:12,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:19:12,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889256747] [2024-11-24 01:19:12,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:12,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:19:12,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:12,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:19:12,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:19:12,466 INFO L87 Difference]: Start difference. First operand 308 states and 415 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:19:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:13,556 INFO L93 Difference]: Finished difference Result 621 states and 834 transitions. [2024-11-24 01:19:13,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:19:13,557 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2024-11-24 01:19:13,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:13,559 INFO L225 Difference]: With dead ends: 621 [2024-11-24 01:19:13,560 INFO L226 Difference]: Without dead ends: 331 [2024-11-24 01:19:13,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:19:13,562 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 79 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:13,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1136 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:19:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-24 01:19:13,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 328. [2024-11-24 01:19:13,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 257 states have (on average 1.2295719844357977) internal successors, (316), 260 states have internal predecessors, (316), 61 states have call successors, (61), 9 states have call predecessors, (61), 9 states have return successors, (61), 58 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-24 01:19:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 438 transitions. [2024-11-24 01:19:13,620 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 438 transitions. Word has length 117 [2024-11-24 01:19:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:13,621 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 438 transitions. [2024-11-24 01:19:13,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:19:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 438 transitions. [2024-11-24 01:19:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 01:19:13,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:13,624 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:13,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:19:13,624 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:13,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash -593231241, now seen corresponding path program 1 times [2024-11-24 01:19:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:13,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615421719] [2024-11-24 01:19:13,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:13,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:14,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:14,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615421719] [2024-11-24 01:19:14,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615421719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:14,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:14,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:19:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183496739] [2024-11-24 01:19:14,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:14,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:19:14,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:14,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:19:14,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:19:14,589 INFO L87 Difference]: Start difference. First operand 328 states and 438 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:19:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:15,427 INFO L93 Difference]: Finished difference Result 636 states and 848 transitions. [2024-11-24 01:19:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:19:15,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2024-11-24 01:19:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:15,432 INFO L225 Difference]: With dead ends: 636 [2024-11-24 01:19:15,432 INFO L226 Difference]: Without dead ends: 338 [2024-11-24 01:19:15,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:19:15,434 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 81 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:15,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1029 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:19:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-24 01:19:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 335. [2024-11-24 01:19:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 263 states have (on average 1.2243346007604563) internal successors, (322), 266 states have internal predecessors, (322), 61 states have call successors, (61), 10 states have call predecessors, (61), 10 states have return successors, (61), 58 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-24 01:19:15,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 444 transitions. [2024-11-24 01:19:15,490 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 444 transitions. Word has length 117 [2024-11-24 01:19:15,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:15,491 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 444 transitions. [2024-11-24 01:19:15,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:19:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 444 transitions. [2024-11-24 01:19:15,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 01:19:15,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:15,495 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:15,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:19:15,495 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:15,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash -851396679, now seen corresponding path program 1 times [2024-11-24 01:19:15,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:15,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812067769] [2024-11-24 01:19:15,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:15,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:16,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812067769] [2024-11-24 01:19:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812067769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:16,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:19:16,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293000302] [2024-11-24 01:19:16,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:16,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:19:16,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:16,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:19:16,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:19:16,751 INFO L87 Difference]: Start difference. First operand 335 states and 444 transitions. Second operand has 9 states, 6 states have (on average 7.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:19:17,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:17,730 INFO L93 Difference]: Finished difference Result 640 states and 849 transitions. [2024-11-24 01:19:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:19:17,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 7.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2024-11-24 01:19:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:17,734 INFO L225 Difference]: With dead ends: 640 [2024-11-24 01:19:17,734 INFO L226 Difference]: Without dead ends: 335 [2024-11-24 01:19:17,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:19:17,739 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 73 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:17,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 839 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:19:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-24 01:19:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 332. [2024-11-24 01:19:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 260 states have (on average 1.2192307692307693) internal successors, (317), 263 states have internal predecessors, (317), 61 states have call successors, (61), 10 states have call predecessors, (61), 10 states have return successors, (61), 58 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-24 01:19:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 439 transitions. [2024-11-24 01:19:17,800 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 439 transitions. Word has length 117 [2024-11-24 01:19:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:17,801 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 439 transitions. [2024-11-24 01:19:17,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 7.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:19:17,801 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 439 transitions. [2024-11-24 01:19:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-24 01:19:17,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:17,805 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:17,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:19:17,806 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:17,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:17,821 INFO L85 PathProgramCache]: Analyzing trace with hash -837181581, now seen corresponding path program 1 times [2024-11-24 01:19:17,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880186652] [2024-11-24 01:19:17,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:17,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:19,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:19,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880186652] [2024-11-24 01:19:19,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880186652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:19,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:19,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:19:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569605195] [2024-11-24 01:19:19,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:19,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:19:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:19,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:19:19,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:19:19,359 INFO L87 Difference]: Start difference. First operand 332 states and 439 transitions. Second operand has 11 states, 8 states have (on average 5.75) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:19:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:20,427 INFO L93 Difference]: Finished difference Result 864 states and 1140 transitions. [2024-11-24 01:19:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:19:20,428 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 5.75) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) Word has length 118 [2024-11-24 01:19:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:20,435 INFO L225 Difference]: With dead ends: 864 [2024-11-24 01:19:20,435 INFO L226 Difference]: Without dead ends: 562 [2024-11-24 01:19:20,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:19:20,438 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 82 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:20,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 998 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:19:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-24 01:19:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 468. [2024-11-24 01:19:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 374 states have (on average 1.2058823529411764) internal successors, (451), 379 states have internal predecessors, (451), 79 states have call successors, (79), 14 states have call predecessors, (79), 14 states have return successors, (79), 74 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-24 01:19:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 609 transitions. [2024-11-24 01:19:20,526 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 609 transitions. Word has length 118 [2024-11-24 01:19:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:20,526 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 609 transitions. [2024-11-24 01:19:20,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 5.75) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:19:20,527 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 609 transitions. [2024-11-24 01:19:20,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-24 01:19:20,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:20,529 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:20,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:19:20,530 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:20,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1358672584, now seen corresponding path program 1 times [2024-11-24 01:19:20,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:20,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564123110] [2024-11-24 01:19:20,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:20,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-24 01:19:23,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:23,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564123110] [2024-11-24 01:19:23,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564123110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:19:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552362091] [2024-11-24 01:19:23,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:23,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:19:23,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:19:23,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:19:23,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:19:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:24,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-24 01:19:24,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:19:24,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 01:19:24,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-24 01:19:24,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 01:19:24,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:19:24,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-24 01:19:25,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:19:25,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2024-11-24 01:19:25,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 01:19:25,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2024-11-24 01:19:26,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:19:26,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 50 [2024-11-24 01:19:30,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:19:30,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 54 [2024-11-24 01:19:30,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2024-11-24 01:19:30,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-24 01:19:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 288 proven. 57 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-24 01:19:30,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:19:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:31,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552362091] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:19:31,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:19:31,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17, 22] total 40 [2024-11-24 01:19:31,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229254936] [2024-11-24 01:19:31,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:31,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:19:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:31,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:19:31,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:19:31,883 INFO L87 Difference]: Start difference. First operand 468 states and 609 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:19:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:33,215 INFO L93 Difference]: Finished difference Result 984 states and 1272 transitions. [2024-11-24 01:19:33,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:19:33,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 119 [2024-11-24 01:19:33,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:33,220 INFO L225 Difference]: With dead ends: 984 [2024-11-24 01:19:33,221 INFO L226 Difference]: Without dead ends: 546 [2024-11-24 01:19:33,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 01:19:33,223 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 121 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:33,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 469 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:19:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-24 01:19:33,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 540. [2024-11-24 01:19:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 437 states have (on average 1.208237986270023) internal successors, (528), 444 states have internal predecessors, (528), 83 states have call successors, (83), 19 states have call predecessors, (83), 19 states have return successors, (83), 76 states have call predecessors, (83), 83 states have call successors, (83) [2024-11-24 01:19:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 694 transitions. [2024-11-24 01:19:33,295 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 694 transitions. Word has length 119 [2024-11-24 01:19:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:33,295 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 694 transitions. [2024-11-24 01:19:33,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:19:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 694 transitions. [2024-11-24 01:19:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-24 01:19:33,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:33,298 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:33,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:19:33,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6ba7ee-045c-4869-b257-fa207937fee9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 01:19:33,503 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:33,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:33,504 INFO L85 PathProgramCache]: Analyzing trace with hash 54726989, now seen corresponding path program 1 times [2024-11-24 01:19:33,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:33,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340446069] [2024-11-24 01:19:33,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:33,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:34,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:34,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340446069] [2024-11-24 01:19:34,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340446069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:34,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:34,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:19:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658602238] [2024-11-24 01:19:34,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:34,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:19:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:34,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:19:34,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:19:34,368 INFO L87 Difference]: Start difference. First operand 540 states and 694 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:19:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:36,051 INFO L93 Difference]: Finished difference Result 1052 states and 1352 transitions. [2024-11-24 01:19:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:19:36,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 120 [2024-11-24 01:19:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:36,057 INFO L225 Difference]: With dead ends: 1052 [2024-11-24 01:19:36,057 INFO L226 Difference]: Without dead ends: 546 [2024-11-24 01:19:36,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:19:36,061 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 157 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:36,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 567 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:19:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-24 01:19:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 540. [2024-11-24 01:19:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 437 states have (on average 1.2036613272311212) internal successors, (526), 444 states have internal predecessors, (526), 83 states have call successors, (83), 19 states have call predecessors, (83), 19 states have return successors, (83), 76 states have call predecessors, (83), 83 states have call successors, (83) [2024-11-24 01:19:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 692 transitions. [2024-11-24 01:19:36,134 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 692 transitions. Word has length 120 [2024-11-24 01:19:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:36,135 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 692 transitions. [2024-11-24 01:19:36,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:19:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 692 transitions. [2024-11-24 01:19:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-24 01:19:36,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:36,138 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:36,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:19:36,139 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:36,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1348302124, now seen corresponding path program 1 times [2024-11-24 01:19:36,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:36,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417495649] [2024-11-24 01:19:36,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-24 01:19:37,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:37,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417495649] [2024-11-24 01:19:37,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417495649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:37,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:37,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:19:37,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947916450] [2024-11-24 01:19:37,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:37,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:19:37,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:37,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:19:37,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:19:37,129 INFO L87 Difference]: Start difference. First operand 540 states and 692 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:19:37,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:37,496 INFO L93 Difference]: Finished difference Result 574 states and 731 transitions. [2024-11-24 01:19:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:19:37,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2024-11-24 01:19:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:37,502 INFO L225 Difference]: With dead ends: 574 [2024-11-24 01:19:37,502 INFO L226 Difference]: Without dead ends: 572 [2024-11-24 01:19:37,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:19:37,505 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 63 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:37,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 551 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:19:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-24 01:19:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 560. [2024-11-24 01:19:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 460 states have (on average 1.1934782608695653) internal successors, (549), 467 states have internal predecessors, (549), 79 states have call successors, (79), 20 states have call predecessors, (79), 20 states have return successors, (79), 72 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-24 01:19:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 707 transitions. [2024-11-24 01:19:37,584 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 707 transitions. Word has length 120 [2024-11-24 01:19:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:37,584 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 707 transitions. [2024-11-24 01:19:37,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:19:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 707 transitions. [2024-11-24 01:19:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-24 01:19:37,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:37,587 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:37,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:19:37,587 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:37,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:37,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1350149166, now seen corresponding path program 1 times [2024-11-24 01:19:37,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:37,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620773376] [2024-11-24 01:19:37,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:37,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat