./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_fib_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_fib_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 583ab92a7056287b3071cc8588dd414024160b1da2815b90013f83f6f32564a1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:16:52,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:16:52,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:16:53,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:16:53,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:16:53,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:16:53,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:16:53,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:16:53,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:16:53,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:16:53,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:16:53,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:16:53,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:16:53,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:16:53,027 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:16:53,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:16:53,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:16:53,027 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:16:53,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:16:53,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:16:53,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:16:53,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:16:53,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:16:53,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:16:53,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:16:53,032 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:16:53,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:16:53,032 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:16:53,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:16:53,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:16:53,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:16:53,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:16:53,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:16:53,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:16:53,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:16:53,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:16:53,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:16:53,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:16:53,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:16:53,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:16:53,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:16:53,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:16:53,036 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 583ab92a7056287b3071cc8588dd414024160b1da2815b90013f83f6f32564a1 [2024-11-18 15:16:53,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:16:53,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:16:53,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:16:53,247 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:16:53,248 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:16:53,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_fib_longer-2.i [2024-11-18 15:16:54,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:16:54,927 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:16:54,932 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib_longer-2.i [2024-11-18 15:16:54,957 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588c837de/1b72fe4bfb81454fbf7c46fe7e59c85a/FLAGa8227d061 [2024-11-18 15:16:55,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588c837de/1b72fe4bfb81454fbf7c46fe7e59c85a [2024-11-18 15:16:55,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:16:55,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:16:55,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:16:55,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:16:55,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:16:55,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63fdeaee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55, skipping insertion in model container [2024-11-18 15:16:55,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,290 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:16:55,602 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib_longer-2.i[23464,23477] [2024-11-18 15:16:55,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:16:55,716 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:16:55,742 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib_longer-2.i[23464,23477] [2024-11-18 15:16:55,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:16:55,828 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:16:55,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55 WrapperNode [2024-11-18 15:16:55,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:16:55,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:16:55,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:16:55,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:16:55,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,902 INFO L138 Inliner]: procedures = 145, calls = 480, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 808 [2024-11-18 15:16:55,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:16:55,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:16:55,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:16:55,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:16:55,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,956 INFO L175 MemorySlicer]: Split 322 memory accesses to 17 slices as follows [2, 37, 8, 8, 8, 62, 6, 57, 25, 25, 13, 11, 37, 8, 13, 2, 0]. 19 percent of accesses are in the largest equivalence class. The 76 initializations are split as follows [2, 0, 3, 3, 3, 21, 1, 21, 7, 7, 0, 7, 0, 1, 0, 0, 0]. The 73 writes are split as follows [0, 1, 2, 2, 2, 23, 1, 18, 8, 8, 1, 2, 1, 1, 1, 2, 0]. [2024-11-18 15:16:55,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:55,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:56,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:56,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:16:56,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:16:56,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:16:56,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:16:56,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (1/1) ... [2024-11-18 15:16:56,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:16:56,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:16:56,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:16:56,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:16:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 15:16:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 15:16:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 15:16:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 15:16:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 15:16:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 15:16:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 15:16:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 15:16:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 15:16:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 15:16:56,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 15:16:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-18 15:16:56,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 15:16:56,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 15:16:56,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:16:56,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 15:16:56,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 15:16:56,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-18 15:16:56,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-18 15:16:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 15:16:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-18 15:16:56,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-18 15:16:56,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-18 15:16:56,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-18 15:16:56,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-18 15:16:56,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-18 15:16:56,161 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:16:56,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:16:56,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 15:16:56,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 15:16:56,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-18 15:16:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-18 15:16:56,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 15:16:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 15:16:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 15:16:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 15:16:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 15:16:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 15:16:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:16:56,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:16:56,427 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:16:56,430 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:16:56,704 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-18 15:16:56,704 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:16:56,704 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-18 15:16:56,704 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:16:56,704 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L733: SUMMARY for call __CS_cs(); srcloc: null [2024-11-18 15:16:56,704 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-18 15:16:56,704 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:01,103 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-11-18 15:17:01,103 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:17:01,117 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:17:01,117 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-18 15:17:01,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:17:01 BoogieIcfgContainer [2024-11-18 15:17:01,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:17:01,119 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:17:01,119 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:17:01,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:17:01,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:16:55" (1/3) ... [2024-11-18 15:17:01,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458c0d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:17:01, skipping insertion in model container [2024-11-18 15:17:01,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:55" (2/3) ... [2024-11-18 15:17:01,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458c0d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:17:01, skipping insertion in model container [2024-11-18 15:17:01,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:17:01" (3/3) ... [2024-11-18 15:17:01,124 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_fib_longer-2.i [2024-11-18 15:17:01,136 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:17:01,136 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:17:01,185 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:17:01,190 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;@44c430b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:17:01,191 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:17:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 117 states have internal predecessors, (153), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 15:17:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 15:17:01,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:01,212 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:01,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:01,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash -36790115, now seen corresponding path program 1 times [2024-11-18 15:17:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105949234] [2024-11-18 15:17:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-18 15:17:01,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:01,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105949234] [2024-11-18 15:17:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105949234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:01,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:01,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 15:17:01,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669305761] [2024-11-18 15:17:01,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:01,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 15:17:01,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:01,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 15:17:01,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:17:01,964 INFO L87 Difference]: Start difference. First operand has 189 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 117 states have internal predecessors, (153), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-18 15:17:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:02,004 INFO L93 Difference]: Finished difference Result 376 states and 637 transitions. [2024-11-18 15:17:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 15:17:02,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-11-18 15:17:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:02,015 INFO L225 Difference]: With dead ends: 376 [2024-11-18 15:17:02,015 INFO L226 Difference]: Without dead ends: 185 [2024-11-18 15:17:02,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:17:02,022 INFO L432 NwaCegarLoop]: 281 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, 281 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 [2024-11-18 15:17:02,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:17:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-18 15:17:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-18 15:17:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 113 states have (on average 1.2654867256637168) internal successors, (143), 113 states have internal predecessors, (143), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 15:17:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 277 transitions. [2024-11-18 15:17:02,068 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 277 transitions. Word has length 300 [2024-11-18 15:17:02,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:02,069 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 277 transitions. [2024-11-18 15:17:02,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-18 15:17:02,069 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 277 transitions. [2024-11-18 15:17:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-18 15:17:02,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:02,074 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:02,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:17:02,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:02,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 669147722, now seen corresponding path program 1 times [2024-11-18 15:17:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:02,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141891366] [2024-11-18 15:17:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-18 15:17:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141891366] [2024-11-18 15:17:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141891366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:02,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:02,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:17:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934331] [2024-11-18 15:17:02,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:02,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:17:02,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:02,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:17:02,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:17:02,703 INFO L87 Difference]: Start difference. First operand 185 states and 277 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-18 15:17:06,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:06,828 INFO L93 Difference]: Finished difference Result 368 states and 552 transitions. [2024-11-18 15:17:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:17:06,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 301 [2024-11-18 15:17:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:06,831 INFO L225 Difference]: With dead ends: 368 [2024-11-18 15:17:06,831 INFO L226 Difference]: Without dead ends: 192 [2024-11-18 15:17:06,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:06,833 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 7 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:06,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 813 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 15:17:06,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-18 15:17:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2024-11-18 15:17:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 115 states have (on average 1.2608695652173914) internal successors, (145), 115 states have internal predecessors, (145), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 15:17:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 279 transitions. [2024-11-18 15:17:06,854 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 279 transitions. Word has length 301 [2024-11-18 15:17:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:06,854 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 279 transitions. [2024-11-18 15:17:06,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-18 15:17:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 279 transitions. [2024-11-18 15:17:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 15:17:06,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:06,860 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:06,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:17:06,860 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:06,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:06,861 INFO L85 PathProgramCache]: Analyzing trace with hash 40259232, now seen corresponding path program 1 times [2024-11-18 15:17:06,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:06,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656483093] [2024-11-18 15:17:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:06,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-18 15:17:07,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656483093] [2024-11-18 15:17:07,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656483093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:07,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:07,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:17:07,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685317454] [2024-11-18 15:17:07,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:07,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:17:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:17:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:17:07,440 INFO L87 Difference]: Start difference. First operand 187 states and 279 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-18 15:17:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:07,501 INFO L93 Difference]: Finished difference Result 373 states and 558 transitions. [2024-11-18 15:17:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:17:07,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 307 [2024-11-18 15:17:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:07,504 INFO L225 Difference]: With dead ends: 373 [2024-11-18 15:17:07,504 INFO L226 Difference]: Without dead ends: 190 [2024-11-18 15:17:07,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:07,505 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:07,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 817 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:17:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-18 15:17:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2024-11-18 15:17:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 117 states have internal predecessors, (147), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 15:17:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 281 transitions. [2024-11-18 15:17:07,518 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 281 transitions. Word has length 307 [2024-11-18 15:17:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:07,518 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 281 transitions. [2024-11-18 15:17:07,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-18 15:17:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 281 transitions. [2024-11-18 15:17:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-18 15:17:07,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:07,523 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:07,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:17:07,524 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:07,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash -390804089, now seen corresponding path program 1 times [2024-11-18 15:17:07,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:07,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778883860] [2024-11-18 15:17:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:07,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4516 trivial. 0 not checked. [2024-11-18 15:17:08,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:08,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778883860] [2024-11-18 15:17:08,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778883860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:08,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:17:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862541900] [2024-11-18 15:17:08,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:08,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:17:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:17:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:17:08,427 INFO L87 Difference]: Start difference. First operand 189 states and 281 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-18 15:17:08,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:08,476 INFO L93 Difference]: Finished difference Result 362 states and 545 transitions. [2024-11-18 15:17:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:17:08,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 310 [2024-11-18 15:17:08,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:08,481 INFO L225 Difference]: With dead ends: 362 [2024-11-18 15:17:08,481 INFO L226 Difference]: Without dead ends: 260 [2024-11-18 15:17:08,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:08,482 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 161 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:08,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 811 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:17:08,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-18 15:17:08,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2024-11-18 15:17:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 165 states have (on average 1.3333333333333333) internal successors, (220), 165 states have internal predecessors, (220), 85 states have call successors, (85), 8 states have call predecessors, (85), 8 states have return successors, (87), 85 states have call predecessors, (87), 85 states have call successors, (87) [2024-11-18 15:17:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 392 transitions. [2024-11-18 15:17:08,513 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 392 transitions. Word has length 310 [2024-11-18 15:17:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:08,513 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 392 transitions. [2024-11-18 15:17:08,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-18 15:17:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 392 transitions. [2024-11-18 15:17:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-18 15:17:08,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:08,537 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:08,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:17:08,539 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:08,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:08,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1961423723, now seen corresponding path program 1 times [2024-11-18 15:17:08,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:08,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370575194] [2024-11-18 15:17:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:08,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5342 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5342 trivial. 0 not checked. [2024-11-18 15:17:09,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370575194] [2024-11-18 15:17:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370575194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:09,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:09,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016333325] [2024-11-18 15:17:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:09,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:09,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:09,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:09,554 INFO L87 Difference]: Start difference. First operand 259 states and 392 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) [2024-11-18 15:17:13,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:17,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:21,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:21,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:21,806 INFO L93 Difference]: Finished difference Result 620 states and 942 transitions. [2024-11-18 15:17:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:21,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) Word has length 378 [2024-11-18 15:17:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:21,810 INFO L225 Difference]: With dead ends: 620 [2024-11-18 15:17:21,810 INFO L226 Difference]: Without dead ends: 509 [2024-11-18 15:17:21,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:21,812 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 263 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:21,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1524 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-11-18 15:17:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-18 15:17:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 502. [2024-11-18 15:17:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 314 states have (on average 1.3343949044585988) internal successors, (419), 317 states have internal predecessors, (419), 168 states have call successors, (168), 16 states have call predecessors, (168), 19 states have return successors, (183), 168 states have call predecessors, (183), 168 states have call successors, (183) [2024-11-18 15:17:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 770 transitions. [2024-11-18 15:17:21,862 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 770 transitions. Word has length 378 [2024-11-18 15:17:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:21,863 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 770 transitions. [2024-11-18 15:17:21,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) [2024-11-18 15:17:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 770 transitions. [2024-11-18 15:17:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-18 15:17:21,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:21,868 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:21,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:17:21,868 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:21,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash 192546997, now seen corresponding path program 1 times [2024-11-18 15:17:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:21,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907335759] [2024-11-18 15:17:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5342 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5342 trivial. 0 not checked. [2024-11-18 15:17:22,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907335759] [2024-11-18 15:17:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907335759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:22,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:22,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296622268] [2024-11-18 15:17:22,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:22,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:22,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:22,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:22,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:22,798 INFO L87 Difference]: Start difference. First operand 502 states and 770 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) [2024-11-18 15:17:26,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:30,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:34,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:35,083 INFO L93 Difference]: Finished difference Result 915 states and 1389 transitions. [2024-11-18 15:17:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:35,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) Word has length 378 [2024-11-18 15:17:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:35,088 INFO L225 Difference]: With dead ends: 915 [2024-11-18 15:17:35,089 INFO L226 Difference]: Without dead ends: 450 [2024-11-18 15:17:35,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:35,092 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 265 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:35,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1547 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-11-18 15:17:35,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-18 15:17:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 446. [2024-11-18 15:17:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 277 states have (on average 1.2671480144404332) internal successors, (351), 279 states have internal predecessors, (351), 151 states have call successors, (151), 15 states have call predecessors, (151), 17 states have return successors, (159), 151 states have call predecessors, (159), 151 states have call successors, (159) [2024-11-18 15:17:35,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 661 transitions. [2024-11-18 15:17:35,124 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 661 transitions. Word has length 378 [2024-11-18 15:17:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:35,124 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 661 transitions. [2024-11-18 15:17:35,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) [2024-11-18 15:17:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 661 transitions. [2024-11-18 15:17:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-18 15:17:35,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:35,146 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:35,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:17:35,146 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:35,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1852850967, now seen corresponding path program 1 times [2024-11-18 15:17:35,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:35,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535276787] [2024-11-18 15:17:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:35,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5342 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5338 trivial. 0 not checked. [2024-11-18 15:17:35,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:35,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535276787] [2024-11-18 15:17:35,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535276787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:35,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768749590] [2024-11-18 15:17:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:35,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:35,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:35,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:17:35,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:17:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:36,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 15:17:36,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5342 backedges. 768 proven. 4 refuted. 0 times theorem prover too weak. 4570 trivial. 0 not checked. [2024-11-18 15:17:36,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:17:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5342 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5338 trivial. 0 not checked. [2024-11-18 15:17:37,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768749590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:17:37,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:17:37,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-18 15:17:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74701075] [2024-11-18 15:17:37,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:17:37,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 15:17:37,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 15:17:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:17:37,588 INFO L87 Difference]: Start difference. First operand 446 states and 661 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 9 states have call successors, (112), 5 states have call predecessors, (112), 6 states have return successors, (113), 7 states have call predecessors, (113), 9 states have call successors, (113) [2024-11-18 15:17:41,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:42,696 INFO L93 Difference]: Finished difference Result 843 states and 1262 transitions. [2024-11-18 15:17:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:17:42,697 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 9 states have call successors, (112), 5 states have call predecessors, (112), 6 states have return successors, (113), 7 states have call predecessors, (113), 9 states have call successors, (113) Word has length 378 [2024-11-18 15:17:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:42,704 INFO L225 Difference]: With dead ends: 843 [2024-11-18 15:17:42,705 INFO L226 Difference]: Without dead ends: 418 [2024-11-18 15:17:42,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:17:42,712 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 384 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 270 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:42,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 855 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 430 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2024-11-18 15:17:42,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-18 15:17:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 405. [2024-11-18 15:17:42,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 265 states have (on average 1.320754716981132) internal successors, (350), 267 states have internal predecessors, (350), 115 states have call successors, (115), 22 states have call predecessors, (115), 24 states have return successors, (131), 115 states have call predecessors, (131), 115 states have call successors, (131) [2024-11-18 15:17:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 596 transitions. [2024-11-18 15:17:42,760 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 596 transitions. Word has length 378 [2024-11-18 15:17:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:42,761 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 596 transitions. [2024-11-18 15:17:42,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 9 states have call successors, (112), 5 states have call predecessors, (112), 6 states have return successors, (113), 7 states have call predecessors, (113), 9 states have call successors, (113) [2024-11-18 15:17:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 596 transitions. [2024-11-18 15:17:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-18 15:17:42,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:42,775 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:42,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 15:17:42,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:42,976 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:42,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash -888158985, now seen corresponding path program 1 times [2024-11-18 15:17:42,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:42,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634662014] [2024-11-18 15:17:42,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:42,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5342 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5338 trivial. 0 not checked. [2024-11-18 15:17:46,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:46,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634662014] [2024-11-18 15:17:46,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634662014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:46,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570593542] [2024-11-18 15:17:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:46,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:46,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:46,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:17:46,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:17:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:48,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 2236 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-18 15:17:48,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:48,686 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 13 treesize of output 9 [2024-11-18 15:17:55,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 15:17:55,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 15:17:55,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2024-11-18 15:17:57,001 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2024-11-18 15:17:57,001 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 6 case distinctions, treesize of input 49 treesize of output 104 [2024-11-18 15:18:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5342 backedges. 813 proven. 4 refuted. 0 times theorem prover too weak. 4525 trivial. 0 not checked. [2024-11-18 15:18:13,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:14,126 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 25 treesize of output 23 [2024-11-18 15:18:14,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 35 treesize of output 31 [2024-11-18 15:18:14,721 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 20 treesize of output 18 [2024-11-18 15:18:14,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2024-11-18 15:18:14,792 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 20 treesize of output 18 [2024-11-18 15:18:14,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2024-11-18 15:18:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5342 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5338 trivial. 0 not checked. [2024-11-18 15:18:14,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570593542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:14,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:14,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 9] total 31 [2024-11-18 15:18:14,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874808046] [2024-11-18 15:18:14,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:14,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 15:18:14,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 15:18:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=789, Unknown=2, NotChecked=0, Total=930 [2024-11-18 15:18:14,886 INFO L87 Difference]: Start difference. First operand 405 states and 596 transitions. Second operand has 31 states, 29 states have (on average 6.172413793103448) internal successors, (179), 31 states have internal predecessors, (179), 17 states have call successors, (121), 12 states have call predecessors, (121), 13 states have return successors, (121), 17 states have call predecessors, (121), 17 states have call successors, (121) [2024-11-18 15:18:18,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:22,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:26,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:30,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []