./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-6.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 fb9f80ac793eeca68c7fd49f4ea0c37ec5912db021eb8e0a4597e07f05d1e26c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 11:18:23,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 11:18:23,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 11:18:23,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 11:18:23,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 11:18:23,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 11:18:23,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 11:18:23,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 11:18:23,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 11:18:23,688 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 11:18:23,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 11:18:23,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 11:18:23,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 11:18:23,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 11:18:23,695 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 11:18:23,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 11:18:23,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 11:18:23,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 11:18:23,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 11:18:23,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 11:18:23,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 11:18:23,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 11:18:23,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 11:18:23,699 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 11:18:23,699 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 11:18:23,700 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 11:18:23,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 11:18:23,700 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 11:18:23,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 11:18:23,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 11:18:23,715 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 11:18:23,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 11:18:23,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 11:18:23,715 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 11:18:23,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 11:18:23,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 11:18:23,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 11:18:23,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 11:18:23,716 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 11:18:23,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 11:18:23,717 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 11:18:23,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 11:18:23,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb9f80ac793eeca68c7fd49f4ea0c37ec5912db021eb8e0a4597e07f05d1e26c [2024-10-24 11:18:23,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 11:18:24,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 11:18:24,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 11:18:24,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 11:18:24,012 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 11:18:24,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-6.i [2024-10-24 11:18:25,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 11:18:25,599 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 11:18:25,600 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-6.i [2024-10-24 11:18:25,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3919772ff/d10bed33788549f5b2ea3246aeacc06f/FLAG35e5da7bc [2024-10-24 11:18:25,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3919772ff/d10bed33788549f5b2ea3246aeacc06f [2024-10-24 11:18:25,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 11:18:25,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 11:18:25,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 11:18:25,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 11:18:25,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 11:18:25,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:18:25" (1/1) ... [2024-10-24 11:18:25,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c188e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:25, skipping insertion in model container [2024-10-24 11:18:25,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:18:25" (1/1) ... [2024-10-24 11:18:26,009 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 11:18:26,185 WARN L248 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-a_file-6.i[915,928] [2024-10-24 11:18:26,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 11:18:26,260 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 11:18:26,271 WARN L248 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-a_file-6.i[915,928] [2024-10-24 11:18:26,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 11:18:26,331 INFO L204 MainTranslator]: Completed translation [2024-10-24 11:18:26,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26 WrapperNode [2024-10-24 11:18:26,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 11:18:26,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 11:18:26,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 11:18:26,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 11:18:26,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,398 INFO L138 Inliner]: procedures = 29, calls = 170, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 517 [2024-10-24 11:18:26,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 11:18:26,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 11:18:26,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 11:18:26,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 11:18:26,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,444 INFO L175 MemorySlicer]: Split 135 memory accesses to 6 slices as follows [2, 16, 32, 28, 21, 36]. 27 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 3, 4, 3, 3, 3]. The 18 writes are split as follows [0, 3, 4, 3, 4, 4]. [2024-10-24 11:18:26,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 11:18:26,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 11:18:26,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 11:18:26,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 11:18:26,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (1/1) ... [2024-10-24 11:18:26,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 11:18:26,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 11:18:26,532 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) [2024-10-24 11:18:26,535 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 [2024-10-24 11:18:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 11:18:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 11:18:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 11:18:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 11:18:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 11:18:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 11:18:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 11:18:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-24 11:18:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-24 11:18:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-24 11:18:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-24 11:18:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-24 11:18:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-24 11:18:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-24 11:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-24 11:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-24 11:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-24 11:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-24 11:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-24 11:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 11:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 11:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 11:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 11:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 11:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 11:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-24 11:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-24 11:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-24 11:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-24 11:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-24 11:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-24 11:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 11:18:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 11:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 11:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 11:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 11:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 11:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 11:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 11:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 11:18:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 11:18:26,742 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 11:18:26,744 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 11:18:27,318 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-10-24 11:18:27,319 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 11:18:27,362 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 11:18:27,362 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 11:18:27,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:18:27 BoogieIcfgContainer [2024-10-24 11:18:27,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 11:18:27,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 11:18:27,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 11:18:27,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 11:18:27,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:18:25" (1/3) ... [2024-10-24 11:18:27,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269ff402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:18:27, skipping insertion in model container [2024-10-24 11:18:27,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:26" (2/3) ... [2024-10-24 11:18:27,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269ff402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:18:27, skipping insertion in model container [2024-10-24 11:18:27,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:18:27" (3/3) ... [2024-10-24 11:18:27,402 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-6.i [2024-10-24 11:18:27,416 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 11:18:27,417 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 11:18:27,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 11:18:27,496 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;@767834ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 11:18:27,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 11:18:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 94 states have internal predecessors, (134), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 11:18:27,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-24 11:18:27,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 11:18:27,520 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 11:18:27,520 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 11:18:27,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 11:18:27,525 INFO L85 PathProgramCache]: Analyzing trace with hash -455682870, now seen corresponding path program 1 times [2024-10-24 11:18:27,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 11:18:27,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771208457] [2024-10-24 11:18:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 11:18:27,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 11:18:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 11:18:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 11:18:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 11:18:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 11:18:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 11:18:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 11:18:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 11:18:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 11:18:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 11:18:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:27,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 11:18:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 11:18:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 11:18:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 11:18:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 11:18:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 11:18:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 11:18:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 11:18:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 11:18:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-24 11:18:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-24 11:18:28,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 11:18:28,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771208457] [2024-10-24 11:18:28,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771208457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 11:18:28,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 11:18:28,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 11:18:28,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177473980] [2024-10-24 11:18:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 11:18:28,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 11:18:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 11:18:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 11:18:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 11:18:28,099 INFO L87 Difference]: Start difference. First operand has 115 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 94 states have internal predecessors, (134), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-24 11:18:28,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 11:18:28,143 INFO L93 Difference]: Finished difference Result 227 states and 361 transitions. [2024-10-24 11:18:28,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 11:18:28,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2024-10-24 11:18:28,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 11:18:28,154 INFO L225 Difference]: With dead ends: 227 [2024-10-24 11:18:28,154 INFO L226 Difference]: Without dead ends: 113 [2024-10-24 11:18:28,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 11:18:28,161 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 11:18:28,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 11:18:28,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-24 11:18:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-10-24 11:18:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 11:18:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 167 transitions. [2024-10-24 11:18:28,221 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 167 transitions. Word has length 153 [2024-10-24 11:18:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 11:18:28,222 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 167 transitions. [2024-10-24 11:18:28,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-24 11:18:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 167 transitions. [2024-10-24 11:18:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-24 11:18:28,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 11:18:28,226 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 11:18:28,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 11:18:28,226 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 11:18:28,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 11:18:28,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1843939048, now seen corresponding path program 1 times [2024-10-24 11:18:28,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 11:18:28,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088222202] [2024-10-24 11:18:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 11:18:28,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 11:18:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 11:18:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 11:18:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 11:18:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 11:18:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 11:18:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 11:18:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 11:18:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 11:18:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 11:18:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 11:18:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 11:18:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 11:18:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 11:18:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 11:18:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 11:18:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 11:18:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 11:18:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 11:18:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-24 11:18:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-24 11:18:28,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 11:18:28,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088222202] [2024-10-24 11:18:28,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088222202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 11:18:28,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 11:18:28,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 11:18:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507435514] [2024-10-24 11:18:28,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 11:18:28,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 11:18:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 11:18:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 11:18:28,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 11:18:28,670 INFO L87 Difference]: Start difference. First operand 113 states and 167 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-24 11:18:28,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 11:18:28,733 INFO L93 Difference]: Finished difference Result 227 states and 336 transitions. [2024-10-24 11:18:28,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 11:18:28,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2024-10-24 11:18:28,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 11:18:28,736 INFO L225 Difference]: With dead ends: 227 [2024-10-24 11:18:28,736 INFO L226 Difference]: Without dead ends: 115 [2024-10-24 11:18:28,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 11:18:28,739 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 11:18:28,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 11:18:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-24 11:18:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-10-24 11:18:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 94 states have internal predecessors, (131), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 11:18:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 169 transitions. [2024-10-24 11:18:28,761 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 169 transitions. Word has length 153 [2024-10-24 11:18:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 11:18:28,763 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 169 transitions. [2024-10-24 11:18:28,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-24 11:18:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 169 transitions. [2024-10-24 11:18:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-24 11:18:28,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 11:18:28,770 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 11:18:28,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 11:18:28,771 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 11:18:28,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 11:18:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1412443674, now seen corresponding path program 1 times [2024-10-24 11:18:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 11:18:28,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138428650] [2024-10-24 11:18:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 11:18:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 11:18:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 11:18:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 11:18:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 11:18:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 11:18:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 11:18:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 11:18:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 11:18:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 11:18:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 11:18:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 11:18:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 11:18:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 11:18:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 11:18:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 11:18:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 11:18:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 11:18:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 11:18:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 11:18:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-24 11:18:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-24 11:18:29,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 11:18:29,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138428650] [2024-10-24 11:18:29,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138428650] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 11:18:29,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 11:18:29,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 11:18:29,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756009139] [2024-10-24 11:18:29,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 11:18:29,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 11:18:29,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 11:18:29,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 11:18:29,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 11:18:29,097 INFO L87 Difference]: Start difference. First operand 115 states and 169 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-10-24 11:18:29,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 11:18:29,155 INFO L93 Difference]: Finished difference Result 229 states and 337 transitions. [2024-10-24 11:18:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 11:18:29,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2024-10-24 11:18:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 11:18:29,157 INFO L225 Difference]: With dead ends: 229 [2024-10-24 11:18:29,157 INFO L226 Difference]: Without dead ends: 115 [2024-10-24 11:18:29,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 11:18:29,159 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 11:18:29,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 318 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 11:18:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-24 11:18:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-10-24 11:18:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 94 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 11:18:29,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2024-10-24 11:18:29,175 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 153 [2024-10-24 11:18:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 11:18:29,176 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2024-10-24 11:18:29,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-10-24 11:18:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2024-10-24 11:18:29,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-24 11:18:29,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 11:18:29,178 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 11:18:29,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 11:18:29,179 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 11:18:29,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 11:18:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash 888378916, now seen corresponding path program 1 times [2024-10-24 11:18:29,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 11:18:29,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753328876] [2024-10-24 11:18:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 11:18:29,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 11:18:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 11:18:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 11:18:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 11:18:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 11:18:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 11:18:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 11:18:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 11:18:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 11:18:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 11:18:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 11:18:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 11:18:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 11:18:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 11:18:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 11:18:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 11:18:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 11:18:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 11:18:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 11:18:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-24 11:18:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-24 11:18:29,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 11:18:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753328876] [2024-10-24 11:18:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753328876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 11:18:29,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 11:18:29,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 11:18:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456989323] [2024-10-24 11:18:29,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 11:18:29,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 11:18:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 11:18:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 11:18:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 11:18:29,428 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-10-24 11:18:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 11:18:29,464 INFO L93 Difference]: Finished difference Result 231 states and 338 transitions. [2024-10-24 11:18:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 11:18:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2024-10-24 11:18:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 11:18:29,467 INFO L225 Difference]: With dead ends: 231 [2024-10-24 11:18:29,467 INFO L226 Difference]: Without dead ends: 117 [2024-10-24 11:18:29,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 11:18:29,469 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 11:18:29,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 473 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 11:18:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-10-24 11:18:29,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-10-24 11:18:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.375) internal successors, (132), 96 states have internal predecessors, (132), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 11:18:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 170 transitions. [2024-10-24 11:18:29,486 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 170 transitions. Word has length 153 [2024-10-24 11:18:29,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 11:18:29,488 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 170 transitions. [2024-10-24 11:18:29,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-10-24 11:18:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 170 transitions. [2024-10-24 11:18:29,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-24 11:18:29,490 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 11:18:29,490 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 11:18:29,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 11:18:29,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 11:18:29,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 11:18:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1184537934, now seen corresponding path program 1 times [2024-10-24 11:18:29,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 11:18:29,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289572018] [2024-10-24 11:18:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 11:18:29,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 11:18:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 11:18:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 11:18:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 11:18:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 11:18:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 11:18:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 11:18:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 11:18:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 11:18:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 11:18:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 11:18:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 11:18:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 11:18:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 11:18:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 11:18:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 11:18:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 11:18:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 11:18:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 11:18:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-24 11:18:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:29,809 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-24 11:18:29,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 11:18:29,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289572018] [2024-10-24 11:18:29,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289572018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 11:18:29,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 11:18:29,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 11:18:29,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816952160] [2024-10-24 11:18:29,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 11:18:29,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 11:18:29,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 11:18:29,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 11:18:29,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 11:18:29,813 INFO L87 Difference]: Start difference. First operand 117 states and 170 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-10-24 11:18:29,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 11:18:29,875 INFO L93 Difference]: Finished difference Result 233 states and 339 transitions. [2024-10-24 11:18:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 11:18:29,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2024-10-24 11:18:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 11:18:29,879 INFO L225 Difference]: With dead ends: 233 [2024-10-24 11:18:29,879 INFO L226 Difference]: Without dead ends: 117 [2024-10-24 11:18:29,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 11:18:29,883 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 11:18:29,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 459 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 11:18:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-10-24 11:18:29,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-10-24 11:18:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 96 states have internal predecessors, (131), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 11:18:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 169 transitions. [2024-10-24 11:18:29,897 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 169 transitions. Word has length 155 [2024-10-24 11:18:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 11:18:29,898 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 169 transitions. [2024-10-24 11:18:29,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-10-24 11:18:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 169 transitions. [2024-10-24 11:18:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-24 11:18:29,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 11:18:29,903 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 11:18:29,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 11:18:29,903 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 11:18:29,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 11:18:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2089361008, now seen corresponding path program 1 times [2024-10-24 11:18:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 11:18:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56551496] [2024-10-24 11:18:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 11:18:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 11:18:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 11:18:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 11:18:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 11:18:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 11:18:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 11:18:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 11:18:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 11:18:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 11:18:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 11:18:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 11:18:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 11:18:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 11:18:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 11:18:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 11:18:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 11:18:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 11:18:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 11:18:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 11:18:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-24 11:18:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 11:18:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-24 11:18:31,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 11:18:31,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56551496] [2024-10-24 11:18:31,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56551496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 11:18:31,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 11:18:31,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 11:18:31,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845184952] [2024-10-24 11:18:31,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 11:18:31,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 11:18:31,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 11:18:31,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 11:18:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 11:18:31,460 INFO L87 Difference]: Start difference. First operand 117 states and 169 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-24 11:18:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 11:18:31,785 INFO L93 Difference]: Finished difference Result 338 states and 487 transitions. [2024-10-24 11:18:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 11:18:31,786 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2024-10-24 11:18:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 11:18:31,791 INFO L225 Difference]: With dead ends: 338 [2024-10-24 11:18:31,791 INFO L226 Difference]: Without dead ends: 222 [2024-10-24 11:18:31,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-24 11:18:31,792 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 242 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 11:18:31,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1287 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 11:18:31,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-10-24 11:18:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2024-10-24 11:18:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 183 states have (on average 1.360655737704918) internal successors, (249), 184 states have internal predecessors, (249), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-24 11:18:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 315 transitions. [2024-10-24 11:18:31,823 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 315 transitions. Word has length 155 [2024-10-24 11:18:31,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 11:18:31,824 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 315 transitions. [2024-10-24 11:18:31,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-24 11:18:31,824 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 315 transitions. [2024-10-24 11:18:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-24 11:18:31,826 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 11:18:31,826 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 11:18:31,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 11:18:31,827 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 11:18:31,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 11:18:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash -302267351, now seen corresponding path program 1 times [2024-10-24 11:18:31,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 11:18:31,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890426701] [2024-10-24 11:18:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 11:18:31,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 11:18:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat