./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-97.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/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-97.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 5da18b64f81f034a410e9d9e3a5ef42f0e947fe2f02b16f700985c826572c6f8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 12:51:23,597 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 12:51:23,659 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 12:51:23,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 12:51:23,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 12:51:23,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 12:51:23,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 12:51:23,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 12:51:23,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 12:51:23,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 12:51:23,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 12:51:23,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 12:51:23,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 12:51:23,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 12:51:23,714 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 12:51:23,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 12:51:23,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 12:51:23,715 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 12:51:23,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 12:51:23,716 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 12:51:23,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 12:51:23,717 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 12:51:23,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 12:51:23,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 12:51:23,717 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 12:51:23,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 12:51:23,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 12:51:23,718 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 12:51:23,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 12:51:23,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 12:51:23,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 12:51:23,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 12:51:23,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:51:23,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 12:51:23,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 12:51:23,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 12:51:23,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 12:51:23,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 12:51:23,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 12:51:23,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 12:51:23,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 12:51:23,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 12:51:23,723 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5da18b64f81f034a410e9d9e3a5ef42f0e947fe2f02b16f700985c826572c6f8 [2024-11-22 12:51:23,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 12:51:24,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 12:51:24,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 12:51:24,009 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 12:51:24,009 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 12:51:24,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-97.i [2024-11-22 12:51:25,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 12:51:25,745 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 12:51:25,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-97.i [2024-11-22 12:51:25,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67caa562/9e28cd08eb2043e6b1bc0ff768b3a653/FLAGfddee9eb1 [2024-11-22 12:51:25,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67caa562/9e28cd08eb2043e6b1bc0ff768b3a653 [2024-11-22 12:51:25,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 12:51:25,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 12:51:25,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 12:51:25,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 12:51:25,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 12:51:25,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:25" (1/1) ... [2024-11-22 12:51:25,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f26e6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:25, skipping insertion in model container [2024-11-22 12:51:25,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:25" (1/1) ... [2024-11-22 12:51:25,830 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 12:51:26,026 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/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-97.i[917,930] [2024-11-22 12:51:26,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:51:26,090 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 12:51:26,102 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/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-97.i[917,930] [2024-11-22 12:51:26,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:51:26,154 INFO L204 MainTranslator]: Completed translation [2024-11-22 12:51:26,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26 WrapperNode [2024-11-22 12:51:26,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 12:51:26,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 12:51:26,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 12:51:26,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 12:51:26,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,227 INFO L138 Inliner]: procedures = 29, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 453 [2024-11-22 12:51:26,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 12:51:26,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 12:51:26,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 12:51:26,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 12:51:26,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,291 INFO L175 MemorySlicer]: Split 116 memory accesses to 6 slices as follows [2, 25, 17, 25, 34, 13]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 3, 2, 3, 5, 2]. The 19 writes are split as follows [0, 4, 2, 4, 7, 2]. [2024-11-22 12:51:26,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 12:51:26,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 12:51:26,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 12:51:26,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 12:51:26,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (1/1) ... [2024-11-22 12:51:26,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:51:26,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:51:26,376 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 12:51:26,384 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 12:51:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 12:51:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-22 12:51:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-22 12:51:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-22 12:51:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-22 12:51:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-22 12:51:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-22 12:51:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 12:51:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 12:51:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 12:51:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 12:51:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 12:51:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 12:51:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-22 12:51:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-22 12:51:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-11-22 12:51:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-11-22 12:51:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-11-22 12:51:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-11-22 12:51:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 12:51:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 12:51:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 12:51:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 12:51:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 12:51:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 12:51:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-11-22 12:51:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-11-22 12:51:26,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-11-22 12:51:26,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-11-22 12:51:26,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-11-22 12:51:26,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-11-22 12:51:26,441 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 12:51:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 12:51:26,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 12:51:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 12:51:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 12:51:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 12:51:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 12:51:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 12:51:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 12:51:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 12:51:26,627 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 12:51:26,629 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 12:51:27,107 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-11-22 12:51:27,107 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 12:51:27,123 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 12:51:27,124 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 12:51:27,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:27 BoogieIcfgContainer [2024-11-22 12:51:27,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 12:51:27,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 12:51:27,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 12:51:27,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 12:51:27,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:51:25" (1/3) ... [2024-11-22 12:51:27,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1bca41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:27, skipping insertion in model container [2024-11-22 12:51:27,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:26" (2/3) ... [2024-11-22 12:51:27,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1bca41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:27, skipping insertion in model container [2024-11-22 12:51:27,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:27" (3/3) ... [2024-11-22 12:51:27,135 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-97.i [2024-11-22 12:51:27,151 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 12:51:27,151 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 12:51:27,221 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 12:51:27,226 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;@7413ffbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 12:51:27,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 12:51:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 88 states have (on average 1.3977272727272727) internal successors, (123), 89 states have internal predecessors, (123), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 12:51:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-22 12:51:27,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:27,268 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:27,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:27,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash -128724950, now seen corresponding path program 1 times [2024-11-22 12:51:27,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:27,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342237684] [2024-11-22 12:51:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:27,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-22 12:51:27,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342237684] [2024-11-22 12:51:27,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342237684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:51:27,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245068923] [2024-11-22 12:51:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:27,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:27,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:51:27,736 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 12:51:27,738 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 12:51:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:28,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 12:51:28,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:51:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-22 12:51:28,074 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:51:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245068923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:28,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:51:28,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 12:51:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820326462] [2024-11-22 12:51:28,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:28,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 12:51:28,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:28,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 12:51:28,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:51:28,118 INFO L87 Difference]: Start difference. First operand has 108 states, 88 states have (on average 1.3977272727272727) internal successors, (123), 89 states have internal predecessors, (123), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 12:51:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:28,158 INFO L93 Difference]: Finished difference Result 209 states and 325 transitions. [2024-11-22 12:51:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 12:51:28,161 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2024-11-22 12:51:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:28,171 INFO L225 Difference]: With dead ends: 209 [2024-11-22 12:51:28,172 INFO L226 Difference]: Without dead ends: 104 [2024-11-22 12:51:28,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 135 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 12:51:28,182 INFO L432 NwaCegarLoop]: 150 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, 150 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 12:51:28,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:51:28,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-22 12:51:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-22 12:51:28,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 85 states have internal predecessors, (116), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 12:51:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 150 transitions. [2024-11-22 12:51:28,230 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 150 transitions. Word has length 134 [2024-11-22 12:51:28,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:28,230 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 150 transitions. [2024-11-22 12:51:28,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 12:51:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 150 transitions. [2024-11-22 12:51:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-22 12:51:28,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:28,234 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:28,245 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 12:51:28,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 12:51:28,436 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:28,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:28,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1217556440, now seen corresponding path program 1 times [2024-11-22 12:51:28,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:28,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306331216] [2024-11-22 12:51:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:28,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-22 12:51:29,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:29,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306331216] [2024-11-22 12:51:29,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306331216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:51:29,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400780157] [2024-11-22 12:51:29,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:29,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:29,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:51:29,022 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 12:51:29,025 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 12:51:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:29,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 12:51:29,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:51:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:29,325 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:51:29,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400780157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:29,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:51:29,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-22 12:51:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007281342] [2024-11-22 12:51:29,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:29,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:51:29,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:29,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:51:29,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:51:29,332 INFO L87 Difference]: Start difference. First operand 104 states and 150 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:29,383 INFO L93 Difference]: Finished difference Result 208 states and 301 transitions. [2024-11-22 12:51:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:51:29,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2024-11-22 12:51:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:29,387 INFO L225 Difference]: With dead ends: 208 [2024-11-22 12:51:29,387 INFO L226 Difference]: Without dead ends: 107 [2024-11-22 12:51:29,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:51:29,389 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:29,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 430 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:51:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-22 12:51:29,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2024-11-22 12:51:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 12:51:29,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 152 transitions. [2024-11-22 12:51:29,405 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 152 transitions. Word has length 134 [2024-11-22 12:51:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:29,410 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 152 transitions. [2024-11-22 12:51:29,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:29,411 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 152 transitions. [2024-11-22 12:51:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-22 12:51:29,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:29,415 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:29,425 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 12:51:29,615 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,SelfDestructingSolverStorable1 [2024-11-22 12:51:29,616 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:29,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:29,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1897614810, now seen corresponding path program 1 times [2024-11-22 12:51:29,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:29,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112688065] [2024-11-22 12:51:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:29,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-22 12:51:29,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112688065] [2024-11-22 12:51:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112688065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:51:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532035551] [2024-11-22 12:51:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:29,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:29,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:51:29,905 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 12:51:29,906 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 12:51:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:30,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 12:51:30,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:51:30,157 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:30,158 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:51:30,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532035551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:30,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:51:30,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-22 12:51:30,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800297335] [2024-11-22 12:51:30,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:30,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:51:30,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:51:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:51:30,162 INFO L87 Difference]: Start difference. First operand 106 states and 152 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:30,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:30,207 INFO L93 Difference]: Finished difference Result 212 states and 305 transitions. [2024-11-22 12:51:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:51:30,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2024-11-22 12:51:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:30,210 INFO L225 Difference]: With dead ends: 212 [2024-11-22 12:51:30,211 INFO L226 Difference]: Without dead ends: 109 [2024-11-22 12:51:30,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:51:30,215 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:30,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 431 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:51:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-22 12:51:30,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2024-11-22 12:51:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 89 states have (on average 1.348314606741573) internal successors, (120), 89 states have internal predecessors, (120), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 12:51:30,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 154 transitions. [2024-11-22 12:51:30,233 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 154 transitions. Word has length 134 [2024-11-22 12:51:30,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:30,233 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 154 transitions. [2024-11-22 12:51:30,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 154 transitions. [2024-11-22 12:51:30,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-22 12:51:30,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:30,237 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:30,245 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 12:51:30,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:30,438 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:30,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:30,438 INFO L85 PathProgramCache]: Analyzing trace with hash -622345124, now seen corresponding path program 1 times [2024-11-22 12:51:30,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525733485] [2024-11-22 12:51:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:30,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-22 12:51:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525733485] [2024-11-22 12:51:30,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525733485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:51:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968023649] [2024-11-22 12:51:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:30,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:30,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:51:30,684 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 12:51:30,686 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 12:51:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:30,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 12:51:30,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:51:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:30,929 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:51:30,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968023649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:30,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:51:30,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-22 12:51:30,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733337285] [2024-11-22 12:51:30,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:30,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:51:30,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:30,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:51:30,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:51:30,932 INFO L87 Difference]: Start difference. First operand 108 states and 154 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:30,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:30,954 INFO L93 Difference]: Finished difference Result 216 states and 309 transitions. [2024-11-22 12:51:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:51:30,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2024-11-22 12:51:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:30,957 INFO L225 Difference]: With dead ends: 216 [2024-11-22 12:51:30,957 INFO L226 Difference]: Without dead ends: 111 [2024-11-22 12:51:30,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:51:30,958 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 433 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 12:51:30,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 433 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:51:30,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-22 12:51:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2024-11-22 12:51:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 91 states have (on average 1.3406593406593406) internal successors, (122), 91 states have internal predecessors, (122), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 12:51:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 156 transitions. [2024-11-22 12:51:30,966 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 156 transitions. Word has length 134 [2024-11-22 12:51:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:30,967 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 156 transitions. [2024-11-22 12:51:30,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 156 transitions. [2024-11-22 12:51:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-22 12:51:30,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:30,970 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:30,980 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 12:51:31,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:31,171 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:31,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:31,171 INFO L85 PathProgramCache]: Analyzing trace with hash -620498082, now seen corresponding path program 1 times [2024-11-22 12:51:31,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:31,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651953051] [2024-11-22 12:51:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:31,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-22 12:51:31,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:31,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651953051] [2024-11-22 12:51:31,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651953051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:51:31,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135057753] [2024-11-22 12:51:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:31,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:31,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:51:31,364 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 12:51:31,370 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 12:51:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:31,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 12:51:31,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:51:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:31,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:51:31,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135057753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:31,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:51:31,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-22 12:51:31,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546056146] [2024-11-22 12:51:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:31,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:51:31,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:31,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:51:31,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:51:31,618 INFO L87 Difference]: Start difference. First operand 110 states and 156 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:31,640 INFO L93 Difference]: Finished difference Result 219 states and 312 transitions. [2024-11-22 12:51:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:51:31,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2024-11-22 12:51:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:31,643 INFO L225 Difference]: With dead ends: 219 [2024-11-22 12:51:31,644 INFO L226 Difference]: Without dead ends: 112 [2024-11-22 12:51:31,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:51:31,646 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:31,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:51:31,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-22 12:51:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-22 12:51:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 93 states have internal predecessors, (124), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 12:51:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 158 transitions. [2024-11-22 12:51:31,663 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 158 transitions. Word has length 134 [2024-11-22 12:51:31,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:31,663 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 158 transitions. [2024-11-22 12:51:31,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:31,663 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 158 transitions. [2024-11-22 12:51:31,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-22 12:51:31,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:31,665 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:31,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 12:51:31,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:31,872 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:31,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:31,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2145792496, now seen corresponding path program 1 times [2024-11-22 12:51:31,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:31,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386033156] [2024-11-22 12:51:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:31,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386033156] [2024-11-22 12:51:32,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386033156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:32,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:51:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:51:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390455321] [2024-11-22 12:51:32,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:32,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:51:32,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:51:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:51:32,453 INFO L87 Difference]: Start difference. First operand 112 states and 158 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:32,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:32,557 INFO L93 Difference]: Finished difference Result 263 states and 368 transitions. [2024-11-22 12:51:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 12:51:32,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2024-11-22 12:51:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:32,559 INFO L225 Difference]: With dead ends: 263 [2024-11-22 12:51:32,559 INFO L226 Difference]: Without dead ends: 154 [2024-11-22 12:51:32,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:51:32,560 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 167 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:32,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 526 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:51:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-22 12:51:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 114. [2024-11-22 12:51:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 95 states have (on average 1.3263157894736841) internal successors, (126), 95 states have internal predecessors, (126), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 12:51:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 160 transitions. [2024-11-22 12:51:32,569 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 160 transitions. Word has length 136 [2024-11-22 12:51:32,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:32,569 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 160 transitions. [2024-11-22 12:51:32,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 160 transitions. [2024-11-22 12:51:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-22 12:51:32,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:32,571 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:32,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 12:51:32,571 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:32,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1222911559, now seen corresponding path program 1 times [2024-11-22 12:51:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:32,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038890954] [2024-11-22 12:51:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:32,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-22 12:51:33,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:33,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038890954] [2024-11-22 12:51:33,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038890954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:51:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674979472] [2024-11-22 12:51:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:33,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:33,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:51:33,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:51:33,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 12:51:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:34,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 12:51:34,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:51:34,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 12:51:34,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-22 12:51:35,362 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-22 12:51:35,363 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 21 treesize of output 24 [2024-11-22 12:51:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 1 proven. 123 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-22 12:51:35,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:51:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674979472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:51:35,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 12:51:35,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2024-11-22 12:51:35,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557473154] [2024-11-22 12:51:35,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 12:51:35,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 12:51:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 12:51:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-22 12:51:35,846 INFO L87 Difference]: Start difference. First operand 114 states and 160 transitions. Second operand has 21 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 21 states have internal predecessors, (99), 7 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2024-11-22 12:51:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:36,683 INFO L93 Difference]: Finished difference Result 292 states and 407 transitions. [2024-11-22 12:51:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 12:51:36,684 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 21 states have internal predecessors, (99), 7 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 136 [2024-11-22 12:51:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:36,686 INFO L225 Difference]: With dead ends: 292 [2024-11-22 12:51:36,686 INFO L226 Difference]: Without dead ends: 181 [2024-11-22 12:51:36,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 12:51:36,688 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 648 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:36,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1420 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:51:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-22 12:51:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 129. [2024-11-22 12:51:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 109 states have internal predecessors, (145), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 12:51:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2024-11-22 12:51:36,703 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 136 [2024-11-22 12:51:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:36,704 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2024-11-22 12:51:36,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 21 states have internal predecessors, (99), 7 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2024-11-22 12:51:36,704 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2024-11-22 12:51:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-22 12:51:36,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:36,706 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:36,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 12:51:36,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:36,907 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:36,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1356925065, now seen corresponding path program 1 times [2024-11-22 12:51:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:36,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981265579] [2024-11-22 12:51:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-22 12:51:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:38,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981265579] [2024-11-22 12:51:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981265579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:51:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131914587] [2024-11-22 12:51:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:38,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:38,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:51:38,818 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:51:38,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 12:51:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:39,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 12:51:39,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:51:39,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 12:51:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 14 proven. 162 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-22 12:51:39,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:51:39,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-22 12:51:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-22 12:51:40,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131914587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:51:40,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:51:40,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 24 [2024-11-22 12:51:40,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280972833] [2024-11-22 12:51:40,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:51:40,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 12:51:40,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:40,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 12:51:40,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-22 12:51:40,033 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand has 24 states, 21 states have (on average 6.523809523809524) internal successors, (137), 23 states have internal predecessors, (137), 10 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (51), 7 states have call predecessors, (51), 10 states have call successors, (51) [2024-11-22 12:51:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:42,002 INFO L93 Difference]: Finished difference Result 346 states and 470 transitions. [2024-11-22 12:51:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 12:51:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 6.523809523809524) internal successors, (137), 23 states have internal predecessors, (137), 10 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (51), 7 states have call predecessors, (51), 10 states have call successors, (51) Word has length 136 [2024-11-22 12:51:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:42,007 INFO L225 Difference]: With dead ends: 346 [2024-11-22 12:51:42,008 INFO L226 Difference]: Without dead ends: 220 [2024-11-22 12:51:42,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=416, Invalid=1654, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 12:51:42,010 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 781 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:42,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1344 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 12:51:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-22 12:51:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 215. [2024-11-22 12:51:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 186 states have (on average 1.3118279569892473) internal successors, (244), 187 states have internal predecessors, (244), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-22 12:51:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 288 transitions. [2024-11-22 12:51:42,034 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 288 transitions. Word has length 136 [2024-11-22 12:51:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:42,035 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 288 transitions. [2024-11-22 12:51:42,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 6.523809523809524) internal successors, (137), 23 states have internal predecessors, (137), 10 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (51), 7 states have call predecessors, (51), 10 states have call successors, (51) [2024-11-22 12:51:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 288 transitions. [2024-11-22 12:51:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-22 12:51:42,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:42,037 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:42,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 12:51:42,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:51:42,238 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:42,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:42,239 INFO L85 PathProgramCache]: Analyzing trace with hash -301909567, now seen corresponding path program 1 times [2024-11-22 12:51:42,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:42,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733363974] [2024-11-22 12:51:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:42,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:42,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:42,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733363974] [2024-11-22 12:51:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733363974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:42,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:51:42,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:51:42,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962285720] [2024-11-22 12:51:42,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:42,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:51:42,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:51:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:51:42,509 INFO L87 Difference]: Start difference. First operand 215 states and 288 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:42,666 INFO L93 Difference]: Finished difference Result 591 states and 786 transitions. [2024-11-22 12:51:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 12:51:42,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 137 [2024-11-22 12:51:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:42,673 INFO L225 Difference]: With dead ends: 591 [2024-11-22 12:51:42,674 INFO L226 Difference]: Without dead ends: 379 [2024-11-22 12:51:42,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 12:51:42,675 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 94 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:42,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 996 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:51:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-22 12:51:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 372. [2024-11-22 12:51:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 323 states have (on average 1.303405572755418) internal successors, (421), 326 states have internal predecessors, (421), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-22 12:51:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 493 transitions. [2024-11-22 12:51:42,714 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 493 transitions. Word has length 137 [2024-11-22 12:51:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:42,714 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 493 transitions. [2024-11-22 12:51:42,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 493 transitions. [2024-11-22 12:51:42,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-22 12:51:42,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:42,716 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:42,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 12:51:42,717 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:42,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:42,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1396815483, now seen corresponding path program 1 times [2024-11-22 12:51:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183301063] [2024-11-22 12:51:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:43,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:43,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183301063] [2024-11-22 12:51:43,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183301063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:43,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:51:43,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 12:51:43,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973924225] [2024-11-22 12:51:43,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:43,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 12:51:43,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:43,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 12:51:43,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-22 12:51:43,542 INFO L87 Difference]: Start difference. First operand 372 states and 493 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 12:51:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:44,260 INFO L93 Difference]: Finished difference Result 922 states and 1202 transitions. [2024-11-22 12:51:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 12:51:44,262 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2024-11-22 12:51:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:44,265 INFO L225 Difference]: With dead ends: 922 [2024-11-22 12:51:44,266 INFO L226 Difference]: Without dead ends: 553 [2024-11-22 12:51:44,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2024-11-22 12:51:44,268 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 288 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:44,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1354 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:51:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-22 12:51:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 354. [2024-11-22 12:51:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 301 states have (on average 1.282392026578073) internal successors, (386), 304 states have internal predecessors, (386), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 12:51:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 462 transitions. [2024-11-22 12:51:44,317 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 462 transitions. Word has length 138 [2024-11-22 12:51:44,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:44,320 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 462 transitions. [2024-11-22 12:51:44,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 12:51:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 462 transitions. [2024-11-22 12:51:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-22 12:51:44,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:44,323 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:44,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 12:51:44,323 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:44,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1124690120, now seen corresponding path program 1 times [2024-11-22 12:51:44,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:44,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711292549] [2024-11-22 12:51:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:44,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:45,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:45,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711292549] [2024-11-22 12:51:45,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711292549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:45,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:51:45,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 12:51:45,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257595058] [2024-11-22 12:51:45,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:45,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 12:51:45,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:45,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 12:51:45,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-22 12:51:45,137 INFO L87 Difference]: Start difference. First operand 354 states and 462 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 12:51:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:45,785 INFO L93 Difference]: Finished difference Result 947 states and 1223 transitions. [2024-11-22 12:51:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 12:51:45,786 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2024-11-22 12:51:45,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:45,789 INFO L225 Difference]: With dead ends: 947 [2024-11-22 12:51:45,790 INFO L226 Difference]: Without dead ends: 619 [2024-11-22 12:51:45,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-22 12:51:45,791 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 330 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:45,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1215 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:51:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-11-22 12:51:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 328. [2024-11-22 12:51:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 282 states have (on average 1.2801418439716312) internal successors, (361), 284 states have internal predecessors, (361), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-22 12:51:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 427 transitions. [2024-11-22 12:51:45,837 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 427 transitions. Word has length 139 [2024-11-22 12:51:45,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:45,838 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 427 transitions. [2024-11-22 12:51:45,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 12:51:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 427 transitions. [2024-11-22 12:51:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-22 12:51:45,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:45,840 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:45,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 12:51:45,840 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:45,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:45,841 INFO L85 PathProgramCache]: Analyzing trace with hash 23984987, now seen corresponding path program 1 times [2024-11-22 12:51:45,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:45,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710827059] [2024-11-22 12:51:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:45,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:46,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:46,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710827059] [2024-11-22 12:51:46,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710827059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:46,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:51:46,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 12:51:46,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657459670] [2024-11-22 12:51:46,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:46,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 12:51:46,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:46,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 12:51:46,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:51:46,201 INFO L87 Difference]: Start difference. First operand 328 states and 427 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 12:51:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:46,500 INFO L93 Difference]: Finished difference Result 717 states and 931 transitions. [2024-11-22 12:51:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:51:46,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2024-11-22 12:51:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:46,503 INFO L225 Difference]: With dead ends: 717 [2024-11-22 12:51:46,504 INFO L226 Difference]: Without dead ends: 392 [2024-11-22 12:51:46,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-22 12:51:46,505 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 322 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:46,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 416 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:51:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-22 12:51:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 328. [2024-11-22 12:51:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 282 states have (on average 1.2730496453900708) internal successors, (359), 284 states have internal predecessors, (359), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-22 12:51:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 425 transitions. [2024-11-22 12:51:46,543 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 425 transitions. Word has length 139 [2024-11-22 12:51:46,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:46,544 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 425 transitions. [2024-11-22 12:51:46,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 12:51:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 425 transitions. [2024-11-22 12:51:46,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-22 12:51:46,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:46,546 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:46,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 12:51:46,547 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:46,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1187092364, now seen corresponding path program 1 times [2024-11-22 12:51:46,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:46,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019993958] [2024-11-22 12:51:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:46,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:51:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 12:51:46,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:51:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019993958] [2024-11-22 12:51:46,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019993958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:51:46,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:51:46,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:51:46,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584112302] [2024-11-22 12:51:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:51:46,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:51:46,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:51:46,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:51:46,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:51:46,913 INFO L87 Difference]: Start difference. First operand 328 states and 425 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:51:47,051 INFO L93 Difference]: Finished difference Result 696 states and 902 transitions. [2024-11-22 12:51:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 12:51:47,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 140 [2024-11-22 12:51:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:51:47,054 INFO L225 Difference]: With dead ends: 696 [2024-11-22 12:51:47,055 INFO L226 Difference]: Without dead ends: 371 [2024-11-22 12:51:47,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:51:47,056 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 115 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:51:47,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 644 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:51:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-22 12:51:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 328. [2024-11-22 12:51:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 282 states have (on average 1.2659574468085106) internal successors, (357), 284 states have internal predecessors, (357), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-22 12:51:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 423 transitions. [2024-11-22 12:51:47,110 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 423 transitions. Word has length 140 [2024-11-22 12:51:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:51:47,111 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 423 transitions. [2024-11-22 12:51:47,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 12:51:47,111 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 423 transitions. [2024-11-22 12:51:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-22 12:51:47,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:51:47,112 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:47,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 12:51:47,113 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:51:47,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:51:47,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1519527030, now seen corresponding path program 1 times [2024-11-22 12:51:47,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:51:47,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81039615] [2024-11-22 12:51:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:51:47,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:51:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat