./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_dekker_unfair.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 ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 03:02:35,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 03:02:35,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 03:02:35,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 03:02:35,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 03:02:35,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 03:02:35,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 03:02:35,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 03:02:35,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 03:02:35,089 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 03:02:35,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 03:02:35,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 03:02:35,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 03:02:35,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 03:02:35,093 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 03:02:35,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 03:02:35,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 03:02:35,094 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 03:02:35,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 03:02:35,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 03:02:35,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 03:02:35,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 03:02:35,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 03:02:35,099 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 03:02:35,099 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 03:02:35,099 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 03:02:35,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 03:02:35,099 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 03:02:35,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 03:02:35,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 03:02:35,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 03:02:35,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 03:02:35,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:02:35,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 03:02:35,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 03:02:35,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 03:02:35,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 03:02:35,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 03:02:35,101 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 03:02:35,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 03:02:35,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 03:02:35,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 03:02:35,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 [2024-11-22 03:02:35,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 03:02:35,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 03:02:35,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 03:02:35,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 03:02:35,347 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 03:02:35,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i [2024-11-22 03:02:36,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 03:02:37,031 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 03:02:37,032 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i [2024-11-22 03:02:37,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef804546/1d7badbcc7f049a384070e7d67b69a14/FLAG01f8d5d43 [2024-11-22 03:02:37,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef804546/1d7badbcc7f049a384070e7d67b69a14 [2024-11-22 03:02:37,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 03:02:37,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 03:02:37,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 03:02:37,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 03:02:37,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 03:02:37,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a82a6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37, skipping insertion in model container [2024-11-22 03:02:37,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 03:02:37,488 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_dekker_unfair.i[23603,23616] [2024-11-22 03:02:37,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:02:37,605 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 03:02:37,637 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_dekker_unfair.i[23603,23616] [2024-11-22 03:02:37,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:02:37,743 INFO L204 MainTranslator]: Completed translation [2024-11-22 03:02:37,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37 WrapperNode [2024-11-22 03:02:37,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 03:02:37,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 03:02:37,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 03:02:37,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 03:02:37,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,811 INFO L138 Inliner]: procedures = 145, calls = 309, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 463 [2024-11-22 03:02:37,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 03:02:37,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 03:02:37,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 03:02:37,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 03:02:37,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,859 INFO L175 MemorySlicer]: Split 158 memory accesses to 18 slices as follows [2, 8, 13, 8, 8, 29, 21, 0, 7, 7, 13, 9, 7, 6, 5, 5, 5, 5]. 18 percent of accesses are in the largest equivalence class. The 43 initializations are split as follows [2, 3, 0, 3, 3, 9, 9, 0, 3, 3, 0, 3, 3, 2, 0, 0, 0, 0]. The 39 writes are split as follows [0, 2, 1, 2, 2, 11, 6, 0, 2, 2, 1, 2, 2, 2, 1, 1, 1, 1]. [2024-11-22 03:02:37,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 03:02:37,917 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 03:02:37,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 03:02:37,917 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 03:02:37,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (1/1) ... [2024-11-22 03:02:37,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:02:37,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:02:37,957 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) [2024-11-22 03:02:37,964 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 [2024-11-22 03:02:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 03:02:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 03:02:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-22 03:02:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-22 03:02:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-22 03:02:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-22 03:02:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-22 03:02:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-22 03:02:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-22 03:02:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-22 03:02:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 03:02:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 03:02:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-22 03:02:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-22 03:02:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-22 03:02:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-22 03:02:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-22 03:02:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-22 03:02:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-22 03:02:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-22 03:02:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-22 03:02:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-22 03:02:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-22 03:02:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-22 03:02:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-11-22 03:02:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-22 03:02:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-22 03:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-22 03:02:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-22 03:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 03:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-22 03:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-22 03:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-22 03:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-22 03:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-22 03:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-22 03:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-22 03:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-22 03:02:38,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 03:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 03:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-22 03:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-22 03:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-22 03:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-22 03:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-22 03:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 03:02:38,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 03:02:38,264 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 03:02:38,267 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 03:02:39,812 INFO L? ?]: Removed 58 outVars from TransFormulas that were not future-live. [2024-11-22 03:02:39,812 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 03:02:39,827 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 03:02:39,828 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 03:02:39,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:02:39 BoogieIcfgContainer [2024-11-22 03:02:39,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 03:02:39,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 03:02:39,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 03:02:39,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 03:02:39,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:02:37" (1/3) ... [2024-11-22 03:02:39,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea73e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:02:39, skipping insertion in model container [2024-11-22 03:02:39,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:37" (2/3) ... [2024-11-22 03:02:39,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea73e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:02:39, skipping insertion in model container [2024-11-22 03:02:39,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:02:39" (3/3) ... [2024-11-22 03:02:39,836 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_dekker_unfair.i [2024-11-22 03:02:39,849 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 03:02:39,850 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 03:02:39,908 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 03:02:39,914 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;@181bb599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 03:02:39,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 03:02:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 78 states have internal predecessors, (103), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-22 03:02:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-22 03:02:39,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:39,936 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:39,936 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:39,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1213115201, now seen corresponding path program 1 times [2024-11-22 03:02:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:39,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621646370] [2024-11-22 03:02:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:39,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 03:02:40,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:40,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621646370] [2024-11-22 03:02:40,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621646370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:40,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:40,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 03:02:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216600355] [2024-11-22 03:02:40,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:40,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 03:02:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 03:02:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 03:02:40,395 INFO L87 Difference]: Start difference. First operand has 119 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 78 states have internal predecessors, (103), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 03:02:40,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:40,429 INFO L93 Difference]: Finished difference Result 236 states and 377 transitions. [2024-11-22 03:02:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 03:02:40,431 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 132 [2024-11-22 03:02:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:40,441 INFO L225 Difference]: With dead ends: 236 [2024-11-22 03:02:40,442 INFO L226 Difference]: Without dead ends: 115 [2024-11-22 03:02:40,447 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 [2024-11-22 03:02:40,451 INFO L432 NwaCegarLoop]: 169 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, 169 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 [2024-11-22 03:02:40,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-22 03:02:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-22 03:02:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 74 states have internal predecessors, (95), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-22 03:02:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 165 transitions. [2024-11-22 03:02:40,489 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 165 transitions. Word has length 132 [2024-11-22 03:02:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:40,489 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 165 transitions. [2024-11-22 03:02:40,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 03:02:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 165 transitions. [2024-11-22 03:02:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-22 03:02:40,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:40,493 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:40,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 03:02:40,493 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:40,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1001836267, now seen corresponding path program 1 times [2024-11-22 03:02:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:40,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165131124] [2024-11-22 03:02:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 03:02:40,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:40,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165131124] [2024-11-22 03:02:40,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165131124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:40,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:40,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 03:02:40,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208212387] [2024-11-22 03:02:40,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:40,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:02:40,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:40,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:02:40,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:02:40,873 INFO L87 Difference]: Start difference. First operand 115 states and 165 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 03:02:40,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:40,934 INFO L93 Difference]: Finished difference Result 228 states and 328 transitions. [2024-11-22 03:02:40,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:02:40,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 132 [2024-11-22 03:02:40,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:40,937 INFO L225 Difference]: With dead ends: 228 [2024-11-22 03:02:40,937 INFO L226 Difference]: Without dead ends: 119 [2024-11-22 03:02:40,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:02:40,942 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 4 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:40,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 322 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-22 03:02:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2024-11-22 03:02:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-22 03:02:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 166 transitions. [2024-11-22 03:02:40,966 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 166 transitions. Word has length 132 [2024-11-22 03:02:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:40,966 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 166 transitions. [2024-11-22 03:02:40,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 03:02:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 166 transitions. [2024-11-22 03:02:40,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-22 03:02:40,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:40,970 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:40,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 03:02:40,970 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:40,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:40,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1502592579, now seen corresponding path program 1 times [2024-11-22 03:02:40,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:40,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066135077] [2024-11-22 03:02:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:40,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 03:02:41,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:41,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066135077] [2024-11-22 03:02:41,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066135077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:41,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:41,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 03:02:41,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135201098] [2024-11-22 03:02:41,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:41,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:02:41,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:41,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:02:41,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:02:41,209 INFO L87 Difference]: Start difference. First operand 116 states and 166 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 03:02:41,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:41,249 INFO L93 Difference]: Finished difference Result 231 states and 332 transitions. [2024-11-22 03:02:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:02:41,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135 [2024-11-22 03:02:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:41,252 INFO L225 Difference]: With dead ends: 231 [2024-11-22 03:02:41,252 INFO L226 Difference]: Without dead ends: 118 [2024-11-22 03:02:41,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:02:41,256 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 1 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:41,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 323 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:41,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-22 03:02:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2024-11-22 03:02:41,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 76 states have internal predecessors, (97), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-22 03:02:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 167 transitions. [2024-11-22 03:02:41,287 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 167 transitions. Word has length 135 [2024-11-22 03:02:41,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:41,288 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 167 transitions. [2024-11-22 03:02:41,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 03:02:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 167 transitions. [2024-11-22 03:02:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-22 03:02:41,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:41,292 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:41,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 03:02:41,294 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:41,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1195483263, now seen corresponding path program 1 times [2024-11-22 03:02:41,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:41,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095886169] [2024-11-22 03:02:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 03:02:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:41,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095886169] [2024-11-22 03:02:41,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095886169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:02:41,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329125240] [2024-11-22 03:02:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:41,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:02:41,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:02:41,559 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) [2024-11-22 03:02:41,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 03:02:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:41,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:02:41,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:02:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 03:02:42,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:02:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-22 03:02:42,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329125240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:02:42,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:02:42,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-22 03:02:42,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726067897] [2024-11-22 03:02:42,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:02:42,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:02:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:02:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:02:42,149 INFO L87 Difference]: Start difference. First operand 117 states and 167 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 03:02:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:42,215 INFO L93 Difference]: Finished difference Result 235 states and 337 transitions. [2024-11-22 03:02:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 03:02:42,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 137 [2024-11-22 03:02:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:42,218 INFO L225 Difference]: With dead ends: 235 [2024-11-22 03:02:42,218 INFO L226 Difference]: Without dead ends: 121 [2024-11-22 03:02:42,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:02:42,219 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 1 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:42,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 643 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-22 03:02:42,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-22 03:02:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 80 states have (on average 1.2625) internal successors, (101), 80 states have internal predecessors, (101), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-22 03:02:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 171 transitions. [2024-11-22 03:02:42,226 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 171 transitions. Word has length 137 [2024-11-22 03:02:42,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:42,226 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 171 transitions. [2024-11-22 03:02:42,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 03:02:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 171 transitions. [2024-11-22 03:02:42,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-22 03:02:42,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:42,228 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:42,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 03:02:42,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:02:42,433 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:42,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:42,433 INFO L85 PathProgramCache]: Analyzing trace with hash 14058627, now seen corresponding path program 2 times [2024-11-22 03:02:42,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:42,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990788752] [2024-11-22 03:02:42,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:02:42,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:42,532 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 03:02:42,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:02:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-22 03:02:42,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:42,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990788752] [2024-11-22 03:02:42,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990788752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:42,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:42,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:02:42,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345056485] [2024-11-22 03:02:42,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:42,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:02:42,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:02:42,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:02:42,709 INFO L87 Difference]: Start difference. First operand 121 states and 171 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 03:02:42,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:42,737 INFO L93 Difference]: Finished difference Result 227 states and 328 transitions. [2024-11-22 03:02:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:02:42,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2024-11-22 03:02:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:42,741 INFO L225 Difference]: With dead ends: 227 [2024-11-22 03:02:42,741 INFO L226 Difference]: Without dead ends: 181 [2024-11-22 03:02:42,742 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 [2024-11-22 03:02:42,742 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 107 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:42,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 508 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-22 03:02:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-22 03:02:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 121 states have internal predecessors, (158), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2024-11-22 03:02:42,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 260 transitions. [2024-11-22 03:02:42,757 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 260 transitions. Word has length 141 [2024-11-22 03:02:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:42,757 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 260 transitions. [2024-11-22 03:02:42,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-22 03:02:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 260 transitions. [2024-11-22 03:02:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-22 03:02:42,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:42,760 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 5, 5, 5, 5, 5, 3, 3, 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] [2024-11-22 03:02:42,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 03:02:42,761 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:42,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash 307641716, now seen corresponding path program 1 times [2024-11-22 03:02:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494337272] [2024-11-22 03:02:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2024-11-22 03:02:43,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:43,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494337272] [2024-11-22 03:02:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494337272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:02:43,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919397902] [2024-11-22 03:02:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:43,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:02:43,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:02:43,048 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) [2024-11-22 03:02:43,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 03:02:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:43,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:02:43,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:02:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2024-11-22 03:02:43,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:02:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2024-11-22 03:02:43,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919397902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:02:43,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:02:43,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-22 03:02:43,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142055008] [2024-11-22 03:02:43,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:02:43,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:02:43,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:43,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:02:43,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:02:43,758 INFO L87 Difference]: Start difference. First operand 181 states and 260 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-22 03:02:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:43,800 INFO L93 Difference]: Finished difference Result 368 states and 528 transitions. [2024-11-22 03:02:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 03:02:43,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 225 [2024-11-22 03:02:43,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:43,802 INFO L225 Difference]: With dead ends: 368 [2024-11-22 03:02:43,802 INFO L226 Difference]: Without dead ends: 199 [2024-11-22 03:02:43,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 447 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:02:43,803 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 4 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:43,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 640 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:43,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-22 03:02:43,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-11-22 03:02:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 139 states have (on average 1.2805755395683454) internal successors, (178), 139 states have internal predecessors, (178), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2024-11-22 03:02:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 280 transitions. [2024-11-22 03:02:43,815 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 280 transitions. Word has length 225 [2024-11-22 03:02:43,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:43,815 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 280 transitions. [2024-11-22 03:02:43,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-22 03:02:43,815 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 280 transitions. [2024-11-22 03:02:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-22 03:02:43,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:43,818 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2024-11-22 03:02:43,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 03:02:44,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 03:02:44,019 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:44,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:44,020 INFO L85 PathProgramCache]: Analyzing trace with hash -611364236, now seen corresponding path program 2 times [2024-11-22 03:02:44,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:44,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462927524] [2024-11-22 03:02:44,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:02:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:44,140 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 03:02:44,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:02:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2024-11-22 03:02:44,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462927524] [2024-11-22 03:02:44,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462927524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:44,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:44,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:02:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451406844] [2024-11-22 03:02:44,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:44,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:02:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:02:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:02:44,298 INFO L87 Difference]: Start difference. First operand 199 states and 280 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-22 03:02:48,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:02:51,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:02:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:51,938 INFO L93 Difference]: Finished difference Result 509 states and 734 transitions. [2024-11-22 03:02:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:02:51,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 243 [2024-11-22 03:02:51,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:51,942 INFO L225 Difference]: With dead ends: 509 [2024-11-22 03:02:51,942 INFO L226 Difference]: Without dead ends: 357 [2024-11-22 03:02:51,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:02:51,943 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 146 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:51,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 667 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2024-11-22 03:02:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-22 03:02:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 353. [2024-11-22 03:02:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 237 states have (on average 1.2911392405063291) internal successors, (306), 237 states have internal predecessors, (306), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (110), 95 states have call predecessors, (110), 95 states have call successors, (110) [2024-11-22 03:02:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 511 transitions. [2024-11-22 03:02:51,967 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 511 transitions. Word has length 243 [2024-11-22 03:02:51,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:51,968 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 511 transitions. [2024-11-22 03:02:51,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-22 03:02:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 511 transitions. [2024-11-22 03:02:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-22 03:02:51,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:51,974 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2024-11-22 03:02:51,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 03:02:51,974 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:51,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1583191084, now seen corresponding path program 1 times [2024-11-22 03:02:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713307640] [2024-11-22 03:02:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:51,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2024-11-22 03:02:52,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:52,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713307640] [2024-11-22 03:02:52,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713307640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:52,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:52,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:02:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445398875] [2024-11-22 03:02:52,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:52,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:02:52,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:02:52,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:02:52,803 INFO L87 Difference]: Start difference. First operand 353 states and 511 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-22 03:02:56,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:00,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:00,937 INFO L93 Difference]: Finished difference Result 633 states and 908 transitions. [2024-11-22 03:03:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:03:00,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 243 [2024-11-22 03:03:00,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:00,944 INFO L225 Difference]: With dead ends: 633 [2024-11-22 03:03:00,944 INFO L226 Difference]: Without dead ends: 321 [2024-11-22 03:03:00,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:03:00,947 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 142 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:00,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 671 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2024-11-22 03:03:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-22 03:03:00,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2024-11-22 03:03:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 213 states have (on average 1.244131455399061) internal successors, (265), 213 states have internal predecessors, (265), 85 states have call successors, (85), 18 states have call predecessors, (85), 18 states have return successors, (93), 85 states have call predecessors, (93), 85 states have call successors, (93) [2024-11-22 03:03:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 443 transitions. [2024-11-22 03:03:00,975 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 443 transitions. Word has length 243 [2024-11-22 03:03:00,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:00,975 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 443 transitions. [2024-11-22 03:03:00,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-22 03:03:00,976 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 443 transitions. [2024-11-22 03:03:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-22 03:03:00,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:00,980 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2024-11-22 03:03:00,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 03:03:00,981 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:00,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:00,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1447908660, now seen corresponding path program 1 times [2024-11-22 03:03:00,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140478781] [2024-11-22 03:03:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-11-22 03:03:01,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:01,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140478781] [2024-11-22 03:03:01,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140478781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:03:01,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854633100] [2024-11-22 03:03:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:01,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:01,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:01,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:03:01,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 03:03:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:02,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 03:03:02,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:03:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2024-11-22 03:03:02,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:03:02,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854633100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:03:02,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:03:02,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-22 03:03:02,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647027859] [2024-11-22 03:03:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:03:02,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 03:03:02,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 03:03:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-22 03:03:02,373 INFO L87 Difference]: Start difference. First operand 317 states and 443 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-22 03:03:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:03,143 INFO L93 Difference]: Finished difference Result 824 states and 1153 transitions. [2024-11-22 03:03:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:03:03,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 243 [2024-11-22 03:03:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:03,146 INFO L225 Difference]: With dead ends: 824 [2024-11-22 03:03:03,147 INFO L226 Difference]: Without dead ends: 532 [2024-11-22 03:03:03,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-22 03:03:03,149 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 237 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:03,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 455 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 03:03:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-22 03:03:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 521. [2024-11-22 03:03:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 341 states have (on average 1.1700879765395895) internal successors, (399), 340 states have internal predecessors, (399), 142 states have call successors, (142), 31 states have call predecessors, (142), 37 states have return successors, (170), 149 states have call predecessors, (170), 142 states have call successors, (170) [2024-11-22 03:03:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 711 transitions. [2024-11-22 03:03:03,219 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 711 transitions. Word has length 243 [2024-11-22 03:03:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:03,219 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 711 transitions. [2024-11-22 03:03:03,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-22 03:03:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 711 transitions. [2024-11-22 03:03:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-22 03:03:03,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:03,223 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2024-11-22 03:03:03,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 03:03:03,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:03,424 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:03,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:03,425 INFO L85 PathProgramCache]: Analyzing trace with hash -547394062, now seen corresponding path program 1 times [2024-11-22 03:03:03,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:03,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685012202] [2024-11-22 03:03:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:03,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-11-22 03:03:04,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:04,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685012202] [2024-11-22 03:03:04,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685012202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:03:04,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492351833] [2024-11-22 03:03:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:04,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:04,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:04,052 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:03:04,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 03:03:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:04,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 03:03:04,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:03:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 400 proven. 4 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2024-11-22 03:03:04,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:03:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-11-22 03:03:05,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492351833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:03:05,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:03:05,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-22 03:03:05,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000293184] [2024-11-22 03:03:05,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:03:05,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 03:03:05,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:05,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 03:03:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-22 03:03:05,204 INFO L87 Difference]: Start difference. First operand 521 states and 711 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 9 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2024-11-22 03:03:06,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:08,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:08,057 INFO L93 Difference]: Finished difference Result 1056 states and 1467 transitions. [2024-11-22 03:03:08,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 03:03:08,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 9 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) Word has length 243 [2024-11-22 03:03:08,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:08,063 INFO L225 Difference]: With dead ends: 1056 [2024-11-22 03:03:08,063 INFO L226 Difference]: Without dead ends: 584 [2024-11-22 03:03:08,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-22 03:03:08,066 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 224 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:08,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 697 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-22 03:03:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-22 03:03:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 559. [2024-11-22 03:03:08,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 377 states have (on average 1.2015915119363396) internal successors, (453), 377 states have internal predecessors, (453), 126 states have call successors, (126), 44 states have call predecessors, (126), 55 states have return successors, (180), 137 states have call predecessors, (180), 126 states have call successors, (180) [2024-11-22 03:03:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 759 transitions. [2024-11-22 03:03:08,106 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 759 transitions. Word has length 243 [2024-11-22 03:03:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:08,106 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 759 transitions. [2024-11-22 03:03:08,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 9 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2024-11-22 03:03:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 759 transitions. [2024-11-22 03:03:08,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-22 03:03:08,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:08,110 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2024-11-22 03:03:08,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 03:03:08,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:08,311 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:08,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1616598994, now seen corresponding path program 1 times [2024-11-22 03:03:08,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:08,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493870049] [2024-11-22 03:03:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:08,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-11-22 03:03:10,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493870049] [2024-11-22 03:03:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493870049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:03:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747887582] [2024-11-22 03:03:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:10,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:10,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:10,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:03:10,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 03:03:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:10,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-22 03:03:10,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:03:11,114 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 [2024-11-22 03:03:17,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 03:03:17,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 03:03:17,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2024-11-22 03:03:21,771 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-22 03:03:21,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-22 03:03:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 472 proven. 4 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2024-11-22 03:03:46,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:03:46,950 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 [2024-11-22 03:03:46,955 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 [2024-11-22 03:03:47,419 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 [2024-11-22 03:03:47,423 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 [2024-11-22 03:03:47,494 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 [2024-11-22 03:03:47,498 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 [2024-11-22 03:03:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-11-22 03:03:47,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747887582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:03:47,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:03:47,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 9] total 37 [2024-11-22 03:03:47,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693852221] [2024-11-22 03:03:47,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:03:47,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-22 03:03:47,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-22 03:03:47,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1193, Unknown=2, NotChecked=0, Total=1332 [2024-11-22 03:03:47,625 INFO L87 Difference]: Start difference. First operand 559 states and 759 transitions. Second operand has 37 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 18 states have call successors, (71), 12 states have call predecessors, (71), 14 states have return successors, (71), 16 states have call predecessors, (71), 18 states have call successors, (71) [2024-11-22 03:03:51,667 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 [] [2024-11-22 03:03:55,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:00,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:04,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:05,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:09,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []