./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-p_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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-p_file-12.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 7d22deea41fa59fa50d8ffe4393e1dc9de22de8468ac22621a99fafe2a1542e8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 13:42:12,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 13:42:12,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 13:42:12,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 13:42:12,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 13:42:12,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 13:42:12,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 13:42:12,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 13:42:12,440 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 13:42:12,440 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 13:42:12,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 13:42:12,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 13:42:12,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 13:42:12,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 13:42:12,442 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 13:42:12,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 13:42:12,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 13:42:12,446 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 13:42:12,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 13:42:12,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 13:42:12,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 13:42:12,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 13:42:12,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 13:42:12,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 13:42:12,452 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 13:42:12,452 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 13:42:12,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 13:42:12,453 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 13:42:12,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 13:42:12,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 13:42:12,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 13:42:12,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 13:42:12,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 13:42:12,457 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 13:42:12,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 13:42:12,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 13:42:12,457 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 13:42:12,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 13:42:12,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 13:42:12,458 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 13:42:12,458 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 13:42:12,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 13:42:12,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d22deea41fa59fa50d8ffe4393e1dc9de22de8468ac22621a99fafe2a1542e8 [2024-10-14 13:42:12,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 13:42:12,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 13:42:12,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 13:42:12,742 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 13:42:12,743 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 13:42:12,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i [2024-10-14 13:42:14,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 13:42:14,399 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 13:42:14,400 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i [2024-10-14 13:42:14,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7c58628/a88af0644a964a80b2726069933c59c3/FLAG9a113f43a [2024-10-14 13:42:14,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7c58628/a88af0644a964a80b2726069933c59c3 [2024-10-14 13:42:14,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 13:42:14,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 13:42:14,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 13:42:14,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 13:42:14,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 13:42:14,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500bc4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14, skipping insertion in model container [2024-10-14 13:42:14,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,463 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 13:42:14,605 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-p_file-12.i[916,929] [2024-10-14 13:42:14,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 13:42:14,671 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 13:42:14,683 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-p_file-12.i[916,929] [2024-10-14 13:42:14,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 13:42:14,743 INFO L204 MainTranslator]: Completed translation [2024-10-14 13:42:14,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14 WrapperNode [2024-10-14 13:42:14,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 13:42:14,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 13:42:14,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 13:42:14,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 13:42:14,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,828 INFO L138 Inliner]: procedures = 26, calls = 161, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 474 [2024-10-14 13:42:14,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 13:42:14,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 13:42:14,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 13:42:14,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 13:42:14,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,883 INFO L175 MemorySlicer]: Split 123 memory accesses to 12 slices as follows [2, 5, 6, 6, 8, 10, 23, 10, 18, 20, 7, 8]. 19 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 14 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1]. [2024-10-14 13:42:14,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 13:42:14,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 13:42:14,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 13:42:14,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 13:42:14,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (1/1) ... [2024-10-14 13:42:14,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 13:42:14,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 13:42:14,971 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) [2024-10-14 13:42:14,977 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 [2024-10-14 13:42:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 13:42:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 13:42:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 13:42:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 13:42:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 13:42:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 13:42:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-14 13:42:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-14 13:42:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-14 13:42:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-14 13:42:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-14 13:42:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-14 13:42:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-14 13:42:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 13:42:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 13:42:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 13:42:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 13:42:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 13:42:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-14 13:42:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-14 13:42:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-14 13:42:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-14 13:42:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-14 13:42:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-14 13:42:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-14 13:42:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 13:42:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 13:42:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 13:42:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 13:42:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 13:42:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 13:42:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 13:42:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 13:42:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 13:42:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 13:42:15,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 13:42:15,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 13:42:15,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 13:42:15,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 13:42:15,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 13:42:15,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 13:42:15,231 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 13:42:15,233 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 13:42:15,857 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-10-14 13:42:15,857 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 13:42:15,899 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 13:42:15,899 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 13:42:15,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:42:15 BoogieIcfgContainer [2024-10-14 13:42:15,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 13:42:15,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 13:42:15,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 13:42:15,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 13:42:15,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:42:14" (1/3) ... [2024-10-14 13:42:15,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7346483c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:42:15, skipping insertion in model container [2024-10-14 13:42:15,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:14" (2/3) ... [2024-10-14 13:42:15,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7346483c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:42:15, skipping insertion in model container [2024-10-14 13:42:15,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:42:15" (3/3) ... [2024-10-14 13:42:15,913 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-12.i [2024-10-14 13:42:15,932 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 13:42:15,933 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 13:42:15,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 13:42:16,002 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;@38f332b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 13:42:16,004 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 13:42:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 13:42:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-14 13:42:16,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:16,025 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:16,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:16,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash 800962782, now seen corresponding path program 1 times [2024-10-14 13:42:16,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:16,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448774246] [2024-10-14 13:42:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:16,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:16,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:16,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448774246] [2024-10-14 13:42:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448774246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:42:16,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:42:16,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 13:42:16,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531536788] [2024-10-14 13:42:16,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:16,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 13:42:16,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 13:42:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 13:42:16,534 INFO L87 Difference]: Start difference. First operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 13:42:16,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:16,584 INFO L93 Difference]: Finished difference Result 173 states and 274 transitions. [2024-10-14 13:42:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 13:42:16,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2024-10-14 13:42:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:16,596 INFO L225 Difference]: With dead ends: 173 [2024-10-14 13:42:16,596 INFO L226 Difference]: Without dead ends: 83 [2024-10-14 13:42:16,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 13:42:16,605 INFO L432 NwaCegarLoop]: 114 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, 114 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 [2024-10-14 13:42:16,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 13:42:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-14 13:42:16,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-14 13:42:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 13:42:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2024-10-14 13:42:16,663 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 112 [2024-10-14 13:42:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:16,664 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2024-10-14 13:42:16,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 13:42:16,665 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2024-10-14 13:42:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-14 13:42:16,670 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:16,670 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:16,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 13:42:16,672 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:16,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1146482878, now seen corresponding path program 1 times [2024-10-14 13:42:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:16,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264000443] [2024-10-14 13:42:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:16,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:17,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:17,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264000443] [2024-10-14 13:42:17,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264000443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:42:17,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:42:17,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 13:42:17,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128807034] [2024-10-14 13:42:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:17,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 13:42:17,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:17,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 13:42:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 13:42:17,091 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:17,130 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2024-10-14 13:42:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 13:42:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 112 [2024-10-14 13:42:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:17,133 INFO L225 Difference]: With dead ends: 165 [2024-10-14 13:42:17,133 INFO L226 Difference]: Without dead ends: 83 [2024-10-14 13:42:17,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 13:42:17,135 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:17,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 13:42:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-14 13:42:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-14 13:42:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 13:42:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2024-10-14 13:42:17,185 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 112 [2024-10-14 13:42:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:17,189 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2024-10-14 13:42:17,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2024-10-14 13:42:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-14 13:42:17,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:17,196 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:17,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 13:42:17,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:17,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:17,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1770995456, now seen corresponding path program 1 times [2024-10-14 13:42:17,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:17,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825536811] [2024-10-14 13:42:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:17,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:17,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825536811] [2024-10-14 13:42:17,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825536811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:42:17,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:42:17,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 13:42:17,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337084355] [2024-10-14 13:42:17,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:17,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 13:42:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:17,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 13:42:17,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 13:42:17,568 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:17,641 INFO L93 Difference]: Finished difference Result 168 states and 237 transitions. [2024-10-14 13:42:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 13:42:17,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 114 [2024-10-14 13:42:17,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:17,644 INFO L225 Difference]: With dead ends: 168 [2024-10-14 13:42:17,644 INFO L226 Difference]: Without dead ends: 86 [2024-10-14 13:42:17,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 13:42:17,646 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:17,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 431 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 13:42:17,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-14 13:42:17,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-10-14 13:42:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 13:42:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2024-10-14 13:42:17,658 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 114 [2024-10-14 13:42:17,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:17,659 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2024-10-14 13:42:17,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2024-10-14 13:42:17,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-14 13:42:17,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:17,662 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:17,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 13:42:17,662 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:17,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:17,663 INFO L85 PathProgramCache]: Analyzing trace with hash 206005468, now seen corresponding path program 1 times [2024-10-14 13:42:17,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:17,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920821312] [2024-10-14 13:42:17,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:17,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:18,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:18,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920821312] [2024-10-14 13:42:18,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920821312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:42:18,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:42:18,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 13:42:18,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006947528] [2024-10-14 13:42:18,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:18,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 13:42:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:18,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 13:42:18,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 13:42:18,239 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:18,397 INFO L93 Difference]: Finished difference Result 157 states and 214 transitions. [2024-10-14 13:42:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 13:42:18,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 116 [2024-10-14 13:42:18,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:18,403 INFO L225 Difference]: With dead ends: 157 [2024-10-14 13:42:18,404 INFO L226 Difference]: Without dead ends: 155 [2024-10-14 13:42:18,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 13:42:18,405 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 78 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:18,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 706 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 13:42:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-14 13:42:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2024-10-14 13:42:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 120 states have internal predecessors, (150), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-14 13:42:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 210 transitions. [2024-10-14 13:42:18,430 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 210 transitions. Word has length 116 [2024-10-14 13:42:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:18,430 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 210 transitions. [2024-10-14 13:42:18,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:18,431 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 210 transitions. [2024-10-14 13:42:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-14 13:42:18,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:18,433 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:18,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 13:42:18,433 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:18,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:18,434 INFO L85 PathProgramCache]: Analyzing trace with hash -862420349, now seen corresponding path program 1 times [2024-10-14 13:42:18,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:18,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743353264] [2024-10-14 13:42:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:18,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-10-14 13:42:20,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:20,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743353264] [2024-10-14 13:42:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743353264] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 13:42:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20944366] [2024-10-14 13:42:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:20,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:20,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 13:42:20,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 13:42:20,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 13:42:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:20,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-10-14 13:42:20,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 13:42:21,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:22,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:23,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-10-14 13:42:23,619 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-10-14 13:42:23,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 30 [2024-10-14 13:42:23,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-10-14 13:42:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 46 proven. 302 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-14 13:42:23,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 13:42:24,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2024-10-14 13:42:25,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-10-14 13:42:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-10-14 13:42:25,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20944366] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 13:42:25,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 13:42:25,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26, 25] total 60 [2024-10-14 13:42:25,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494651608] [2024-10-14 13:42:25,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 13:42:25,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-14 13:42:25,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:25,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-14 13:42:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=3196, Unknown=0, NotChecked=0, Total=3540 [2024-10-14 13:42:25,949 INFO L87 Difference]: Start difference. First operand 152 states and 210 transitions. Second operand has 60 states, 48 states have (on average 2.9166666666666665) internal successors, (140), 52 states have internal predecessors, (140), 18 states have call successors, (48), 5 states have call predecessors, (48), 12 states have return successors, (48), 15 states have call predecessors, (48), 18 states have call successors, (48) [2024-10-14 13:42:33,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:33,447 INFO L93 Difference]: Finished difference Result 335 states and 428 transitions. [2024-10-14 13:42:33,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-10-14 13:42:33,447 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 48 states have (on average 2.9166666666666665) internal successors, (140), 52 states have internal predecessors, (140), 18 states have call successors, (48), 5 states have call predecessors, (48), 12 states have return successors, (48), 15 states have call predecessors, (48), 18 states have call successors, (48) Word has length 117 [2024-10-14 13:42:33,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:33,451 INFO L225 Difference]: With dead ends: 335 [2024-10-14 13:42:33,451 INFO L226 Difference]: Without dead ends: 333 [2024-10-14 13:42:33,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4080 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2224, Invalid=14032, Unknown=0, NotChecked=0, Total=16256 [2024-10-14 13:42:33,458 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 1442 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:33,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 1899 Invalid, 2597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-14 13:42:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-10-14 13:42:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 176. [2024-10-14 13:42:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.2262773722627738) internal successors, (168), 138 states have internal predecessors, (168), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-14 13:42:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2024-10-14 13:42:33,512 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 117 [2024-10-14 13:42:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:33,513 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2024-10-14 13:42:33,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 48 states have (on average 2.9166666666666665) internal successors, (140), 52 states have internal predecessors, (140), 18 states have call successors, (48), 5 states have call predecessors, (48), 12 states have return successors, (48), 15 states have call predecessors, (48), 18 states have call successors, (48) [2024-10-14 13:42:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2024-10-14 13:42:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-14 13:42:33,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:33,515 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:33,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 13:42:33,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:33,720 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:33,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1236684999, now seen corresponding path program 1 times [2024-10-14 13:42:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141639349] [2024-10-14 13:42:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:33,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-10-14 13:42:35,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141639349] [2024-10-14 13:42:35,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141639349] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 13:42:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890096163] [2024-10-14 13:42:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:35,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:35,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 13:42:35,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 13:42:35,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 13:42:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:35,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-14 13:42:35,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 13:42:36,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:37,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:37,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-10-14 13:42:37,822 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-10-14 13:42:37,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 30 [2024-10-14 13:42:38,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-10-14 13:42:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 46 proven. 302 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-14 13:42:38,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 13:42:38,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2024-10-14 13:42:39,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-10-14 13:42:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-10-14 13:42:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890096163] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 13:42:39,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 13:42:39,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27, 26] total 62 [2024-10-14 13:42:39,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011686684] [2024-10-14 13:42:39,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 13:42:39,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-14 13:42:39,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-14 13:42:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=3430, Unknown=0, NotChecked=0, Total=3782 [2024-10-14 13:42:39,786 INFO L87 Difference]: Start difference. First operand 176 states and 228 transitions. Second operand has 62 states, 50 states have (on average 2.84) internal successors, (142), 54 states have internal predecessors, (142), 18 states have call successors, (48), 5 states have call predecessors, (48), 12 states have return successors, (48), 15 states have call predecessors, (48), 18 states have call successors, (48) [2024-10-14 13:42:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:45,612 INFO L93 Difference]: Finished difference Result 268 states and 338 transitions. [2024-10-14 13:42:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-14 13:42:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 50 states have (on average 2.84) internal successors, (142), 54 states have internal predecessors, (142), 18 states have call successors, (48), 5 states have call predecessors, (48), 12 states have return successors, (48), 15 states have call predecessors, (48), 18 states have call successors, (48) Word has length 118 [2024-10-14 13:42:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:45,615 INFO L225 Difference]: With dead ends: 268 [2024-10-14 13:42:45,615 INFO L226 Difference]: Without dead ends: 266 [2024-10-14 13:42:45,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2036, Invalid=12484, Unknown=0, NotChecked=0, Total=14520 [2024-10-14 13:42:45,620 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 2305 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:45,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 1788 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-14 13:42:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-10-14 13:42:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 181. [2024-10-14 13:42:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 142 states have internal predecessors, (172), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-14 13:42:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 232 transitions. [2024-10-14 13:42:45,659 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 232 transitions. Word has length 118 [2024-10-14 13:42:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:45,659 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 232 transitions. [2024-10-14 13:42:45,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 50 states have (on average 2.84) internal successors, (142), 54 states have internal predecessors, (142), 18 states have call successors, (48), 5 states have call predecessors, (48), 12 states have return successors, (48), 15 states have call predecessors, (48), 18 states have call successors, (48) [2024-10-14 13:42:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 232 transitions. [2024-10-14 13:42:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-14 13:42:45,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:45,661 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:45,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 13:42:45,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 13:42:45,862 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:45,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash 756075619, now seen corresponding path program 1 times [2024-10-14 13:42:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:45,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331757135] [2024-10-14 13:42:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:45,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:45,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:45,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:45,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:45,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:45,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:45,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:45,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:45,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:46,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:46,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331757135] [2024-10-14 13:42:46,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331757135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:42:46,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:42:46,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 13:42:46,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475901333] [2024-10-14 13:42:46,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:46,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 13:42:46,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:46,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 13:42:46,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 13:42:46,020 INFO L87 Difference]: Start difference. First operand 181 states and 232 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:46,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:46,096 INFO L93 Difference]: Finished difference Result 418 states and 535 transitions. [2024-10-14 13:42:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 13:42:46,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-10-14 13:42:46,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:46,098 INFO L225 Difference]: With dead ends: 418 [2024-10-14 13:42:46,099 INFO L226 Difference]: Without dead ends: 238 [2024-10-14 13:42:46,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 13:42:46,103 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 31 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:46,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 428 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 13:42:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-14 13:42:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 202. [2024-10-14 13:42:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 162 states have (on average 1.2160493827160495) internal successors, (197), 163 states have internal predecessors, (197), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-14 13:42:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 257 transitions. [2024-10-14 13:42:46,138 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 257 transitions. Word has length 119 [2024-10-14 13:42:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:46,139 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 257 transitions. [2024-10-14 13:42:46,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 257 transitions. [2024-10-14 13:42:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-14 13:42:46,142 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:46,142 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:46,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 13:42:46,142 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:46,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:46,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1255421784, now seen corresponding path program 1 times [2024-10-14 13:42:46,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:46,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165052676] [2024-10-14 13:42:46,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:46,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 13:42:46,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:46,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165052676] [2024-10-14 13:42:46,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165052676] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 13:42:46,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643475736] [2024-10-14 13:42:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:46,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:46,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 13:42:46,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 13:42:46,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 13:42:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:46,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 13:42:46,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 13:42:46,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:47,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2024-10-14 13:42:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-14 13:42:47,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 13:42:47,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-10-14 13:42:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 13:42:47,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643475736] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 13:42:47,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 13:42:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 13 [2024-10-14 13:42:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801100418] [2024-10-14 13:42:47,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 13:42:47,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 13:42:47,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:47,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 13:42:47,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-14 13:42:47,302 INFO L87 Difference]: Start difference. First operand 202 states and 257 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 13 states have internal predecessors, (58), 6 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 4 states have call predecessors, (33), 6 states have call successors, (33) [2024-10-14 13:42:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:47,653 INFO L93 Difference]: Finished difference Result 419 states and 527 transitions. [2024-10-14 13:42:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 13:42:47,654 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 13 states have internal predecessors, (58), 6 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 4 states have call predecessors, (33), 6 states have call successors, (33) Word has length 119 [2024-10-14 13:42:47,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:47,655 INFO L225 Difference]: With dead ends: 419 [2024-10-14 13:42:47,655 INFO L226 Difference]: Without dead ends: 218 [2024-10-14 13:42:47,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 263 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2024-10-14 13:42:47,657 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 265 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:47,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 397 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 13:42:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-14 13:42:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2024-10-14 13:42:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 168 states have (on average 1.1964285714285714) internal successors, (201), 169 states have internal predecessors, (201), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-14 13:42:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 261 transitions. [2024-10-14 13:42:47,705 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 261 transitions. Word has length 119 [2024-10-14 13:42:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:47,705 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 261 transitions. [2024-10-14 13:42:47,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 13 states have internal predecessors, (58), 6 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 4 states have call predecessors, (33), 6 states have call successors, (33) [2024-10-14 13:42:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 261 transitions. [2024-10-14 13:42:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-14 13:42:47,707 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:47,707 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:47,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 13:42:47,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:47,912 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:47,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:47,913 INFO L85 PathProgramCache]: Analyzing trace with hash 214911180, now seen corresponding path program 1 times [2024-10-14 13:42:47,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:47,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195616764] [2024-10-14 13:42:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:47,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 13:42:48,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:48,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195616764] [2024-10-14 13:42:48,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195616764] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 13:42:48,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410563513] [2024-10-14 13:42:48,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:48,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:48,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 13:42:48,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 13:42:48,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 13:42:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:48,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 13:42:48,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 13:42:48,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:48,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2024-10-14 13:42:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-14 13:42:48,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 13:42:49,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-10-14 13:42:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 13:42:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410563513] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 13:42:49,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 13:42:49,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 13 [2024-10-14 13:42:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102465884] [2024-10-14 13:42:49,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 13:42:49,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 13:42:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 13:42:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-14 13:42:49,144 INFO L87 Difference]: Start difference. First operand 210 states and 261 transitions. Second operand has 13 states, 11 states have (on average 5.363636363636363) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 4 states have call predecessors, (33), 6 states have call successors, (33) [2024-10-14 13:42:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:49,510 INFO L93 Difference]: Finished difference Result 427 states and 529 transitions. [2024-10-14 13:42:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 13:42:49,511 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.363636363636363) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 4 states have call predecessors, (33), 6 states have call successors, (33) Word has length 120 [2024-10-14 13:42:49,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:49,512 INFO L225 Difference]: With dead ends: 427 [2024-10-14 13:42:49,513 INFO L226 Difference]: Without dead ends: 218 [2024-10-14 13:42:49,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2024-10-14 13:42:49,514 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 180 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:49,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 392 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 13:42:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-14 13:42:49,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2024-10-14 13:42:49,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 168 states have (on average 1.1845238095238095) internal successors, (199), 169 states have internal predecessors, (199), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-14 13:42:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 259 transitions. [2024-10-14 13:42:49,557 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 259 transitions. Word has length 120 [2024-10-14 13:42:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:49,558 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 259 transitions. [2024-10-14 13:42:49,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.363636363636363) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 4 states have call predecessors, (33), 6 states have call successors, (33) [2024-10-14 13:42:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 259 transitions. [2024-10-14 13:42:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-14 13:42:49,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:49,560 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:49,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 13:42:49,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:49,761 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:49,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:49,761 INFO L85 PathProgramCache]: Analyzing trace with hash -452558770, now seen corresponding path program 1 times [2024-10-14 13:42:49,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:49,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877087664] [2024-10-14 13:42:49,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:49,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 13:42:49,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083207871] [2024-10-14 13:42:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:49,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 13:42:49,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 13:42:49,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 13:42:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:50,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-14 13:42:50,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 13:42:50,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:50,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-10-14 13:42:51,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2024-10-14 13:42:51,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 43 [2024-10-14 13:42:51,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-10-14 13:42:51,368 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-10-14 13:42:51,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 13:42:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:51,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:51,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877087664] [2024-10-14 13:42:51,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 13:42:51,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083207871] [2024-10-14 13:42:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083207871] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 13:42:51,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 13:42:51,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-10-14 13:42:51,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520886466] [2024-10-14 13:42:51,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:51,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 13:42:51,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:51,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 13:42:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-14 13:42:51,658 INFO L87 Difference]: Start difference. First operand 210 states and 259 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:52,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:52,124 INFO L93 Difference]: Finished difference Result 462 states and 564 transitions. [2024-10-14 13:42:52,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 13:42:52,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2024-10-14 13:42:52,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:52,127 INFO L225 Difference]: With dead ends: 462 [2024-10-14 13:42:52,127 INFO L226 Difference]: Without dead ends: 253 [2024-10-14 13:42:52,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-10-14 13:42:52,129 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 106 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:52,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 470 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 13:42:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-10-14 13:42:52,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2024-10-14 13:42:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 193 states have (on average 1.1554404145077721) internal successors, (223), 195 states have internal predecessors, (223), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-14 13:42:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 303 transitions. [2024-10-14 13:42:52,181 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 303 transitions. Word has length 121 [2024-10-14 13:42:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:52,181 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 303 transitions. [2024-10-14 13:42:52,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 303 transitions. [2024-10-14 13:42:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-14 13:42:52,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:52,183 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:52,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 13:42:52,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 13:42:52,384 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:52,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2131294318, now seen corresponding path program 1 times [2024-10-14 13:42:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:52,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510085973] [2024-10-14 13:42:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 13:42:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055392772] [2024-10-14 13:42:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:52,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:52,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 13:42:52,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 13:42:52,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 13:42:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:52,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-14 13:42:52,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 13:42:53,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:53,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-10-14 13:42:53,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-10-14 13:42:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-10-14 13:42:53,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 13:42:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:53,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:53,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510085973] [2024-10-14 13:42:53,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 13:42:53,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055392772] [2024-10-14 13:42:53,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055392772] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 13:42:53,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 13:42:53,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2024-10-14 13:42:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697672743] [2024-10-14 13:42:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:53,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 13:42:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 13:42:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 13:42:53,915 INFO L87 Difference]: Start difference. First operand 250 states and 303 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:54,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:54,218 INFO L93 Difference]: Finished difference Result 545 states and 656 transitions. [2024-10-14 13:42:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 13:42:54,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2024-10-14 13:42:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:54,223 INFO L225 Difference]: With dead ends: 545 [2024-10-14 13:42:54,223 INFO L226 Difference]: Without dead ends: 332 [2024-10-14 13:42:54,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 13:42:54,224 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 54 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:54,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 355 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 13:42:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-14 13:42:54,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 288. [2024-10-14 13:42:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 230 states have (on average 1.1608695652173913) internal successors, (267), 232 states have internal predecessors, (267), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-14 13:42:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 347 transitions. [2024-10-14 13:42:54,273 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 347 transitions. Word has length 122 [2024-10-14 13:42:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:54,273 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 347 transitions. [2024-10-14 13:42:54,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 347 transitions. [2024-10-14 13:42:54,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-14 13:42:54,275 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:54,275 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:54,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 13:42:54,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:54,476 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:54,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash -283355207, now seen corresponding path program 1 times [2024-10-14 13:42:54,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:54,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856747114] [2024-10-14 13:42:54,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:54,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 13:42:54,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804684190] [2024-10-14 13:42:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:54,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:54,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 13:42:54,539 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 13:42:54,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 13:42:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:55,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-14 13:42:55,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 13:42:55,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:55,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-10-14 13:42:55,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2024-10-14 13:42:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-10-14 13:42:55,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 13:42:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:55,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856747114] [2024-10-14 13:42:55,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 13:42:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804684190] [2024-10-14 13:42:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804684190] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 13:42:55,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 13:42:55,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2024-10-14 13:42:55,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905446252] [2024-10-14 13:42:55,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:55,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 13:42:55,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:55,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 13:42:55,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 13:42:55,771 INFO L87 Difference]: Start difference. First operand 288 states and 347 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:56,194 INFO L93 Difference]: Finished difference Result 626 states and 749 transitions. [2024-10-14 13:42:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 13:42:56,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2024-10-14 13:42:56,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:56,197 INFO L225 Difference]: With dead ends: 626 [2024-10-14 13:42:56,201 INFO L226 Difference]: Without dead ends: 339 [2024-10-14 13:42:56,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 233 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-14 13:42:56,203 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 157 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:56,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 500 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 13:42:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-10-14 13:42:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 336. [2024-10-14 13:42:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 260 states have (on average 1.1384615384615384) internal successors, (296), 263 states have internal predecessors, (296), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:42:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 400 transitions. [2024-10-14 13:42:56,276 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 400 transitions. Word has length 123 [2024-10-14 13:42:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:56,277 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 400 transitions. [2024-10-14 13:42:56,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 400 transitions. [2024-10-14 13:42:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-14 13:42:56,279 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:56,279 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:56,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 13:42:56,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:56,480 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:56,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:56,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1754330119, now seen corresponding path program 1 times [2024-10-14 13:42:56,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:56,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569134349] [2024-10-14 13:42:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:56,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 13:42:56,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551212337] [2024-10-14 13:42:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:56,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 13:42:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 13:42:56,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 13:42:56,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 13:42:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:56,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-14 13:42:56,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 13:42:57,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 13:42:57,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2024-10-14 13:42:57,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-10-14 13:42:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 2 proven. 162 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-10-14 13:42:57,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 13:42:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569134349] [2024-10-14 13:42:57,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 13:42:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551212337] [2024-10-14 13:42:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551212337] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 13:42:57,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 13:42:57,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2024-10-14 13:42:57,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502095295] [2024-10-14 13:42:57,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:57,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 13:42:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:57,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 13:42:57,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-10-14 13:42:57,667 INFO L87 Difference]: Start difference. First operand 336 states and 400 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:58,133 INFO L93 Difference]: Finished difference Result 637 states and 756 transitions. [2024-10-14 13:42:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 13:42:58,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2024-10-14 13:42:58,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:58,138 INFO L225 Difference]: With dead ends: 637 [2024-10-14 13:42:58,138 INFO L226 Difference]: Without dead ends: 346 [2024-10-14 13:42:58,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-10-14 13:42:58,141 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 104 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:58,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 420 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 13:42:58,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-10-14 13:42:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 294. [2024-10-14 13:42:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 232 states have (on average 1.146551724137931) internal successors, (266), 234 states have internal predecessors, (266), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-14 13:42:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 350 transitions. [2024-10-14 13:42:58,203 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 350 transitions. Word has length 123 [2024-10-14 13:42:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:58,204 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 350 transitions. [2024-10-14 13:42:58,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:42:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 350 transitions. [2024-10-14 13:42:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:42:58,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:58,207 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:58,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 13:42:58,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 13:42:58,408 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:58,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash -444392749, now seen corresponding path program 1 times [2024-10-14 13:42:58,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:58,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411393526] [2024-10-14 13:42:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:58,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:58,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:58,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411393526] [2024-10-14 13:42:58,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411393526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:42:58,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:42:58,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 13:42:58,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370920094] [2024-10-14 13:42:58,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:58,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 13:42:58,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 13:42:58,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-14 13:42:58,932 INFO L87 Difference]: Start difference. First operand 294 states and 350 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 13:42:59,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:42:59,385 INFO L93 Difference]: Finished difference Result 612 states and 736 transitions. [2024-10-14 13:42:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 13:42:59,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2024-10-14 13:42:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:42:59,388 INFO L225 Difference]: With dead ends: 612 [2024-10-14 13:42:59,389 INFO L226 Difference]: Without dead ends: 319 [2024-10-14 13:42:59,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 13:42:59,390 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 187 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 13:42:59,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 303 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 13:42:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-14 13:42:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 296. [2024-10-14 13:42:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 234 states have (on average 1.1495726495726495) internal successors, (269), 236 states have internal predecessors, (269), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-14 13:42:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 353 transitions. [2024-10-14 13:42:59,450 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 353 transitions. Word has length 124 [2024-10-14 13:42:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:42:59,450 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 353 transitions. [2024-10-14 13:42:59,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 13:42:59,451 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 353 transitions. [2024-10-14 13:42:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:42:59,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:42:59,452 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:42:59,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 13:42:59,452 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:42:59,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:42:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2045136213, now seen corresponding path program 1 times [2024-10-14 13:42:59,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:42:59,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680283433] [2024-10-14 13:42:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:42:59,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:42:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:42:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:42:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:42:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:42:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:42:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:42:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:42:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:42:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:42:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:42:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:42:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:42:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:42:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:42:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:42:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:42:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:42:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:42:59,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:42:59,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680283433] [2024-10-14 13:42:59,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680283433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:42:59,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:42:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 13:42:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512055348] [2024-10-14 13:42:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:42:59,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 13:42:59,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:42:59,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 13:42:59,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 13:42:59,777 INFO L87 Difference]: Start difference. First operand 296 states and 353 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:00,120 INFO L93 Difference]: Finished difference Result 814 states and 969 transitions. [2024-10-14 13:43:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 13:43:00,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-10-14 13:43:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:00,124 INFO L225 Difference]: With dead ends: 814 [2024-10-14 13:43:00,124 INFO L226 Difference]: Without dead ends: 519 [2024-10-14 13:43:00,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 13:43:00,126 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 78 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:00,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 510 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 13:43:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-10-14 13:43:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 392. [2024-10-14 13:43:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 315 states have (on average 1.1523809523809523) internal successors, (363), 318 states have internal predecessors, (363), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 467 transitions. [2024-10-14 13:43:00,211 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 467 transitions. Word has length 124 [2024-10-14 13:43:00,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:00,211 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 467 transitions. [2024-10-14 13:43:00,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 467 transitions. [2024-10-14 13:43:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:00,214 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:00,214 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:00,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 13:43:00,215 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:00,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1548766505, now seen corresponding path program 1 times [2024-10-14 13:43:00,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:00,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364290819] [2024-10-14 13:43:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364290819] [2024-10-14 13:43:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364290819] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:00,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:00,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 13:43:00,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010531152] [2024-10-14 13:43:00,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:00,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 13:43:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:00,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 13:43:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 13:43:00,636 INFO L87 Difference]: Start difference. First operand 392 states and 467 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:00,981 INFO L93 Difference]: Finished difference Result 910 states and 1080 transitions. [2024-10-14 13:43:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 13:43:00,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-10-14 13:43:00,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:00,985 INFO L225 Difference]: With dead ends: 910 [2024-10-14 13:43:00,985 INFO L226 Difference]: Without dead ends: 519 [2024-10-14 13:43:00,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 13:43:00,986 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 75 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:00,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 512 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 13:43:00,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-10-14 13:43:01,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 396. [2024-10-14 13:43:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 319 states have (on average 1.1536050156739812) internal successors, (368), 322 states have internal predecessors, (368), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 472 transitions. [2024-10-14 13:43:01,072 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 472 transitions. Word has length 124 [2024-10-14 13:43:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:01,073 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 472 transitions. [2024-10-14 13:43:01,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 472 transitions. [2024-10-14 13:43:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:01,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:01,074 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:01,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 13:43:01,075 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:01,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:01,091 INFO L85 PathProgramCache]: Analyzing trace with hash -868708135, now seen corresponding path program 1 times [2024-10-14 13:43:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:01,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860065552] [2024-10-14 13:43:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:01,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:01,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:01,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860065552] [2024-10-14 13:43:01,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860065552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:01,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:01,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 13:43:01,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432277047] [2024-10-14 13:43:01,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:01,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 13:43:01,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:01,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 13:43:01,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-14 13:43:01,587 INFO L87 Difference]: Start difference. First operand 396 states and 472 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-10-14 13:43:02,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:02,243 INFO L93 Difference]: Finished difference Result 982 states and 1165 transitions. [2024-10-14 13:43:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 13:43:02,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 124 [2024-10-14 13:43:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:02,247 INFO L225 Difference]: With dead ends: 982 [2024-10-14 13:43:02,247 INFO L226 Difference]: Without dead ends: 587 [2024-10-14 13:43:02,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-10-14 13:43:02,249 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 160 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:02,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 778 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 13:43:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-10-14 13:43:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 432. [2024-10-14 13:43:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 355 states have (on average 1.1549295774647887) internal successors, (410), 358 states have internal predecessors, (410), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 514 transitions. [2024-10-14 13:43:02,336 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 514 transitions. Word has length 124 [2024-10-14 13:43:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:02,338 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 514 transitions. [2024-10-14 13:43:02,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-10-14 13:43:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 514 transitions. [2024-10-14 13:43:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:02,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:02,340 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:02,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 13:43:02,340 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:02,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash 801652192, now seen corresponding path program 1 times [2024-10-14 13:43:02,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:02,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041215139] [2024-10-14 13:43:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:02,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:02,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:02,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041215139] [2024-10-14 13:43:02,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041215139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:02,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 13:43:02,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553376425] [2024-10-14 13:43:02,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:02,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 13:43:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 13:43:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 13:43:02,673 INFO L87 Difference]: Start difference. First operand 432 states and 514 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:03,060 INFO L93 Difference]: Finished difference Result 986 states and 1166 transitions. [2024-10-14 13:43:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 13:43:03,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-10-14 13:43:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:03,064 INFO L225 Difference]: With dead ends: 986 [2024-10-14 13:43:03,064 INFO L226 Difference]: Without dead ends: 555 [2024-10-14 13:43:03,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 13:43:03,065 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 74 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:03,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 514 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 13:43:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-10-14 13:43:03,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 434. [2024-10-14 13:43:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 357 states have (on average 1.1512605042016806) internal successors, (411), 360 states have internal predecessors, (411), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 515 transitions. [2024-10-14 13:43:03,157 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 515 transitions. Word has length 124 [2024-10-14 13:43:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:03,157 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 515 transitions. [2024-10-14 13:43:03,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 515 transitions. [2024-10-14 13:43:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:03,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:03,158 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:03,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 13:43:03,158 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:03,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1481710562, now seen corresponding path program 1 times [2024-10-14 13:43:03,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:03,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873132495] [2024-10-14 13:43:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:03,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:03,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:03,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873132495] [2024-10-14 13:43:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873132495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:03,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:03,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-14 13:43:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125456989] [2024-10-14 13:43:03,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:03,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 13:43:03,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:03,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 13:43:03,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-10-14 13:43:03,878 INFO L87 Difference]: Start difference. First operand 434 states and 515 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:04,808 INFO L93 Difference]: Finished difference Result 1075 states and 1268 transitions. [2024-10-14 13:43:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 13:43:04,809 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-10-14 13:43:04,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:04,812 INFO L225 Difference]: With dead ends: 1075 [2024-10-14 13:43:04,812 INFO L226 Difference]: Without dead ends: 642 [2024-10-14 13:43:04,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-10-14 13:43:04,814 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 79 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:04,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1865 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 13:43:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-10-14 13:43:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 478. [2024-10-14 13:43:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 401 states have (on average 1.1571072319201996) internal successors, (464), 404 states have internal predecessors, (464), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 568 transitions. [2024-10-14 13:43:04,914 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 568 transitions. Word has length 124 [2024-10-14 13:43:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:04,915 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 568 transitions. [2024-10-14 13:43:04,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 568 transitions. [2024-10-14 13:43:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:04,916 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:04,917 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:04,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 13:43:04,917 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:04,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1783977742, now seen corresponding path program 1 times [2024-10-14 13:43:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:04,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691808473] [2024-10-14 13:43:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:05,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:05,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691808473] [2024-10-14 13:43:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691808473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:05,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:05,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 13:43:05,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317995495] [2024-10-14 13:43:05,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:05,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 13:43:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 13:43:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-14 13:43:05,330 INFO L87 Difference]: Start difference. First operand 478 states and 568 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 13:43:05,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:05,815 INFO L93 Difference]: Finished difference Result 1145 states and 1347 transitions. [2024-10-14 13:43:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 13:43:05,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2024-10-14 13:43:05,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:05,819 INFO L225 Difference]: With dead ends: 1145 [2024-10-14 13:43:05,820 INFO L226 Difference]: Without dead ends: 668 [2024-10-14 13:43:05,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 13:43:05,822 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 275 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:05,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 448 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 13:43:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-10-14 13:43:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 478. [2024-10-14 13:43:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 401 states have (on average 1.1546134663341645) internal successors, (463), 404 states have internal predecessors, (463), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 567 transitions. [2024-10-14 13:43:05,946 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 567 transitions. Word has length 124 [2024-10-14 13:43:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:05,947 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 567 transitions. [2024-10-14 13:43:05,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 13:43:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 567 transitions. [2024-10-14 13:43:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:05,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:05,948 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:05,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 13:43:05,949 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:05,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash -21460592, now seen corresponding path program 1 times [2024-10-14 13:43:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:05,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779055196] [2024-10-14 13:43:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:07,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:07,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779055196] [2024-10-14 13:43:07,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779055196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:07,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:07,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-10-14 13:43:07,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573041112] [2024-10-14 13:43:07,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:07,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 13:43:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 13:43:07,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2024-10-14 13:43:07,686 INFO L87 Difference]: Start difference. First operand 478 states and 567 transitions. Second operand has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 22 states have internal predecessors, (47), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2024-10-14 13:43:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:09,917 INFO L93 Difference]: Finished difference Result 1133 states and 1333 transitions. [2024-10-14 13:43:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 13:43:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 22 states have internal predecessors, (47), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 124 [2024-10-14 13:43:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:09,921 INFO L225 Difference]: With dead ends: 1133 [2024-10-14 13:43:09,921 INFO L226 Difference]: Without dead ends: 656 [2024-10-14 13:43:09,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=218, Invalid=1588, Unknown=0, NotChecked=0, Total=1806 [2024-10-14 13:43:09,925 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 329 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:09,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1749 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-14 13:43:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-10-14 13:43:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 484. [2024-10-14 13:43:10,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 407 states have (on average 1.1523341523341524) internal successors, (469), 410 states have internal predecessors, (469), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 573 transitions. [2024-10-14 13:43:10,036 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 573 transitions. Word has length 124 [2024-10-14 13:43:10,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:10,036 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 573 transitions. [2024-10-14 13:43:10,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 22 states have internal predecessors, (47), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2024-10-14 13:43:10,036 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 573 transitions. [2024-10-14 13:43:10,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:10,037 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:10,038 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:10,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 13:43:10,038 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:10,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:10,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1966009191, now seen corresponding path program 1 times [2024-10-14 13:43:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679866375] [2024-10-14 13:43:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:10,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:10,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:10,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679866375] [2024-10-14 13:43:10,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679866375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:10,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:10,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 13:43:10,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092615181] [2024-10-14 13:43:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:10,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 13:43:10,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 13:43:10,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 13:43:10,359 INFO L87 Difference]: Start difference. First operand 484 states and 573 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:10,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:10,760 INFO L93 Difference]: Finished difference Result 1099 states and 1291 transitions. [2024-10-14 13:43:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 13:43:10,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-10-14 13:43:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:10,766 INFO L225 Difference]: With dead ends: 1099 [2024-10-14 13:43:10,766 INFO L226 Difference]: Without dead ends: 616 [2024-10-14 13:43:10,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 13:43:10,768 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 62 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:10,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 668 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 13:43:10,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-10-14 13:43:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 480. [2024-10-14 13:43:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 403 states have (on average 1.1464019851116625) internal successors, (462), 406 states have internal predecessors, (462), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 566 transitions. [2024-10-14 13:43:10,880 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 566 transitions. Word has length 124 [2024-10-14 13:43:10,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:10,880 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 566 transitions. [2024-10-14 13:43:10,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:10,880 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 566 transitions. [2024-10-14 13:43:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:10,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:10,882 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:10,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-14 13:43:10,882 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:10,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash -584941359, now seen corresponding path program 1 times [2024-10-14 13:43:10,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:10,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794330465] [2024-10-14 13:43:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:10,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:11,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:11,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794330465] [2024-10-14 13:43:11,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794330465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:11,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:11,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-14 13:43:11,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843853206] [2024-10-14 13:43:11,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:11,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 13:43:11,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:11,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 13:43:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-14 13:43:11,537 INFO L87 Difference]: Start difference. First operand 480 states and 566 transitions. Second operand has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2024-10-14 13:43:12,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:12,431 INFO L93 Difference]: Finished difference Result 1210 states and 1427 transitions. [2024-10-14 13:43:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 13:43:12,431 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 124 [2024-10-14 13:43:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:12,436 INFO L225 Difference]: With dead ends: 1210 [2024-10-14 13:43:12,436 INFO L226 Difference]: Without dead ends: 731 [2024-10-14 13:43:12,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-10-14 13:43:12,438 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 158 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:12,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 837 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 13:43:12,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-10-14 13:43:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 515. [2024-10-14 13:43:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 438 states have (on average 1.1552511415525115) internal successors, (506), 441 states have internal predecessors, (506), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:12,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 610 transitions. [2024-10-14 13:43:12,598 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 610 transitions. Word has length 124 [2024-10-14 13:43:12,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:12,599 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 610 transitions. [2024-10-14 13:43:12,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2024-10-14 13:43:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 610 transitions. [2024-10-14 13:43:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:12,600 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:12,600 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:12,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-14 13:43:12,601 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:12,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:12,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1765477338, now seen corresponding path program 1 times [2024-10-14 13:43:12,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:12,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577808476] [2024-10-14 13:43:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:12,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:13,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:13,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577808476] [2024-10-14 13:43:13,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577808476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:13,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:13,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-14 13:43:13,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940545510] [2024-10-14 13:43:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:13,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 13:43:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:13,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 13:43:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-10-14 13:43:13,275 INFO L87 Difference]: Start difference. First operand 515 states and 610 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:14,082 INFO L93 Difference]: Finished difference Result 1217 states and 1438 transitions. [2024-10-14 13:43:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 13:43:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-10-14 13:43:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:14,087 INFO L225 Difference]: With dead ends: 1217 [2024-10-14 13:43:14,088 INFO L226 Difference]: Without dead ends: 703 [2024-10-14 13:43:14,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-10-14 13:43:14,090 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 88 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:14,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1856 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 13:43:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-10-14 13:43:14,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 523. [2024-10-14 13:43:14,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 446 states have (on average 1.1659192825112108) internal successors, (520), 449 states have internal predecessors, (520), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 624 transitions. [2024-10-14 13:43:14,213 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 624 transitions. Word has length 124 [2024-10-14 13:43:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:14,213 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 624 transitions. [2024-10-14 13:43:14,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 13:43:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 624 transitions. [2024-10-14 13:43:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:14,215 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:14,215 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:14,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-14 13:43:14,216 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:14,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:14,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1849431588, now seen corresponding path program 1 times [2024-10-14 13:43:14,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:14,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587654515] [2024-10-14 13:43:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:14,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:14,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:14,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587654515] [2024-10-14 13:43:14,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587654515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:14,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:14,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 13:43:14,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805054690] [2024-10-14 13:43:14,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:14,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 13:43:14,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:14,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 13:43:14,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-14 13:43:14,660 INFO L87 Difference]: Start difference. First operand 523 states and 624 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 13:43:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:15,227 INFO L93 Difference]: Finished difference Result 1259 states and 1484 transitions. [2024-10-14 13:43:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 13:43:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2024-10-14 13:43:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:15,231 INFO L225 Difference]: With dead ends: 1259 [2024-10-14 13:43:15,231 INFO L226 Difference]: Without dead ends: 734 [2024-10-14 13:43:15,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-14 13:43:15,233 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 274 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:15,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 551 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 13:43:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-10-14 13:43:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 514. [2024-10-14 13:43:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 437 states have (on average 1.1441647597254005) internal successors, (500), 440 states have internal predecessors, (500), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 604 transitions. [2024-10-14 13:43:15,394 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 604 transitions. Word has length 124 [2024-10-14 13:43:15,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:15,395 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 604 transitions. [2024-10-14 13:43:15,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 13:43:15,395 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 604 transitions. [2024-10-14 13:43:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:15,396 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:15,397 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:15,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-14 13:43:15,397 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:15,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash 116123219, now seen corresponding path program 1 times [2024-10-14 13:43:15,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:15,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640245588] [2024-10-14 13:43:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:15,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 13:43:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 13:43:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 13:43:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 13:43:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 13:43:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 13:43:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 13:43:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 13:43:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 13:43:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 13:43:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 13:43:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 13:43:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 13:43:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 13:43:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 13:43:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 13:43:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 13:43:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 13:43:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 13:43:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640245588] [2024-10-14 13:43:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640245588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 13:43:15,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 13:43:15,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 13:43:15,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860228056] [2024-10-14 13:43:15,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 13:43:15,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 13:43:15,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 13:43:15,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 13:43:15,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-14 13:43:15,761 INFO L87 Difference]: Start difference. First operand 514 states and 604 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 13:43:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 13:43:16,337 INFO L93 Difference]: Finished difference Result 1181 states and 1375 transitions. [2024-10-14 13:43:16,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 13:43:16,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2024-10-14 13:43:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 13:43:16,341 INFO L225 Difference]: With dead ends: 1181 [2024-10-14 13:43:16,341 INFO L226 Difference]: Without dead ends: 665 [2024-10-14 13:43:16,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 13:43:16,343 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 148 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 13:43:16,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 553 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 13:43:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-14 13:43:16,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 484. [2024-10-14 13:43:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 407 states have (on average 1.1228501228501229) internal successors, (457), 410 states have internal predecessors, (457), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-14 13:43:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 561 transitions. [2024-10-14 13:43:16,496 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 561 transitions. Word has length 124 [2024-10-14 13:43:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 13:43:16,497 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 561 transitions. [2024-10-14 13:43:16,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 13:43:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 561 transitions. [2024-10-14 13:43:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 13:43:16,498 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 13:43:16,498 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 13:43:16,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-14 13:43:16,499 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 13:43:16,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 13:43:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash 262306184, now seen corresponding path program 1 times [2024-10-14 13:43:16,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 13:43:16,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969053463] [2024-10-14 13:43:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 13:43:16,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 13:43:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat