./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.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 b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 22:56:37,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 22:56:37,391 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 22:56:37,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 22:56:37,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 22:56:37,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 22:56:37,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 22:56:37,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 22:56:37,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 22:56:37,430 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 22:56:37,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 22:56:37,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 22:56:37,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 22:56:37,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 22:56:37,432 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 22:56:37,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 22:56:37,432 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 22:56:37,433 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 22:56:37,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 22:56:37,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 22:56:37,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 22:56:37,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 22:56:37,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 22:56:37,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 22:56:37,437 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 22:56:37,437 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 22:56:37,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 22:56:37,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 22:56:37,438 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 22:56:37,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 22:56:37,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 22:56:37,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 22:56:37,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:56:37,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 22:56:37,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 22:56:37,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 22:56:37,441 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 22:56:37,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 22:56:37,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 22:56:37,442 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 22:56:37,442 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 22:56:37,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 22:56:37,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2024-11-16 22:56:37,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 22:56:37,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 22:56:37,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 22:56:37,730 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 22:56:37,731 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 22:56:37,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2024-11-16 22:56:39,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 22:56:39,209 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-16 22:56:39,467 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 22:56:39,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2024-11-16 22:56:39,490 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd2eceb9/5391f6cbb23f423f95f9c1dc8929d9cd/FLAGd467795c8 [2024-11-16 22:56:39,503 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd2eceb9/5391f6cbb23f423f95f9c1dc8929d9cd [2024-11-16 22:56:39,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 22:56:39,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 22:56:39,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 22:56:39,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 22:56:39,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 22:56:39,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:56:39" (1/1) ... [2024-11-16 22:56:39,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8689dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:39, skipping insertion in model container [2024-11-16 22:56:39,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:56:39" (1/1) ... [2024-11-16 22:56:39,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 22:56:40,033 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2024-11-16 22:56:40,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:56:40,242 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 22:56:40,279 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2024-11-16 22:56:40,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:56:40,439 INFO L204 MainTranslator]: Completed translation [2024-11-16 22:56:40,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40 WrapperNode [2024-11-16 22:56:40,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 22:56:40,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 22:56:40,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 22:56:40,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 22:56:40,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,620 INFO L138 Inliner]: procedures = 177, calls = 506, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3329 [2024-11-16 22:56:40,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 22:56:40,622 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 22:56:40,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 22:56:40,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 22:56:40,632 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,852 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 372, 106]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 82, 4]. [2024-11-16 22:56:40,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,912 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 22:56:40,955 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 22:56:40,956 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 22:56:40,956 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 22:56:40,957 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (1/1) ... [2024-11-16 22:56:40,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:56:40,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:56:40,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 22:56:40,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 22:56:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-16 22:56:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-16 22:56:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 22:56:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 22:56:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 22:56:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 22:56:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 22:56:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 22:56:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 22:56:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 22:56:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 22:56:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 22:56:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-16 22:56:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 22:56:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 22:56:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 22:56:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 22:56:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 22:56:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 22:56:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 22:56:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 22:56:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 22:56:41,344 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 22:56:41,346 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 22:56:43,692 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2024-11-16 22:56:43,941 INFO L? ?]: Removed 780 outVars from TransFormulas that were not future-live. [2024-11-16 22:56:43,941 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 22:56:44,043 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 22:56:44,044 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-16 22:56:44,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:56:44 BoogieIcfgContainer [2024-11-16 22:56:44,044 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 22:56:44,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 22:56:44,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 22:56:44,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 22:56:44,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:56:39" (1/3) ... [2024-11-16 22:56:44,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a98217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:56:44, skipping insertion in model container [2024-11-16 22:56:44,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:40" (2/3) ... [2024-11-16 22:56:44,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a98217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:56:44, skipping insertion in model container [2024-11-16 22:56:44,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:56:44" (3/3) ... [2024-11-16 22:56:44,054 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-1.i [2024-11-16 22:56:44,069 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 22:56:44,069 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 22:56:44,167 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 22:56:44,174 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;@7461117a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 22:56:44,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 22:56:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 1042 states, 1023 states have (on average 1.6207233626588464) internal successors, (1658), 1028 states have internal predecessors, (1658), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-16 22:56:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 22:56:44,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:44,190 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:44,191 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:44,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash -337370254, now seen corresponding path program 1 times [2024-11-16 22:56:44,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:44,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225770974] [2024-11-16 22:56:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:44,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:56:44,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:44,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225770974] [2024-11-16 22:56:44,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225770974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:44,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:44,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 22:56:44,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294795667] [2024-11-16 22:56:44,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:44,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 22:56:44,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 22:56:44,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:56:44,416 INFO L87 Difference]: Start difference. First operand has 1042 states, 1023 states have (on average 1.6207233626588464) internal successors, (1658), 1028 states have internal predecessors, (1658), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:44,699 INFO L93 Difference]: Finished difference Result 2082 states and 3378 transitions. [2024-11-16 22:56:44,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 22:56:44,702 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-16 22:56:44,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:44,721 INFO L225 Difference]: With dead ends: 2082 [2024-11-16 22:56:44,721 INFO L226 Difference]: Without dead ends: 1038 [2024-11-16 22:56:44,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:56:44,733 INFO L432 NwaCegarLoop]: 1407 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:44,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1407 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:56:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-11-16 22:56:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2024-11-16 22:56:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1020 states have (on average 1.4666666666666666) internal successors, (1496), 1025 states have internal predecessors, (1496), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:56:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1523 transitions. [2024-11-16 22:56:44,831 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1523 transitions. Word has length 13 [2024-11-16 22:56:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:44,831 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1523 transitions. [2024-11-16 22:56:44,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1523 transitions. [2024-11-16 22:56:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 22:56:44,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:44,837 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:44,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 22:56:44,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:44,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1542851100, now seen corresponding path program 1 times [2024-11-16 22:56:44,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:44,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689975210] [2024-11-16 22:56:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:56:45,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:45,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689975210] [2024-11-16 22:56:45,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689975210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:45,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:45,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:56:45,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525062248] [2024-11-16 22:56:45,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:45,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:56:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:45,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:56:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:56:45,313 INFO L87 Difference]: Start difference. First operand 1038 states and 1523 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:45,846 INFO L93 Difference]: Finished difference Result 2070 states and 3040 transitions. [2024-11-16 22:56:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:56:45,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 22:56:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:45,857 INFO L225 Difference]: With dead ends: 2070 [2024-11-16 22:56:45,857 INFO L226 Difference]: Without dead ends: 1428 [2024-11-16 22:56:45,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:56:45,860 INFO L432 NwaCegarLoop]: 1399 mSDtfsCounter, 552 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 4131 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:45,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 4131 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 22:56:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-16 22:56:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1040. [2024-11-16 22:56:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1022 states have (on average 1.4657534246575343) internal successors, (1498), 1027 states have internal predecessors, (1498), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:56:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1525 transitions. [2024-11-16 22:56:45,894 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1525 transitions. Word has length 69 [2024-11-16 22:56:45,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:45,895 INFO L471 AbstractCegarLoop]: Abstraction has 1040 states and 1525 transitions. [2024-11-16 22:56:45,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:45,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1525 transitions. [2024-11-16 22:56:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-16 22:56:45,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:45,903 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:45,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 22:56:45,903 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:45,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2022394253, now seen corresponding path program 1 times [2024-11-16 22:56:45,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:45,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329669046] [2024-11-16 22:56:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:56:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:46,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329669046] [2024-11-16 22:56:46,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329669046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:46,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:46,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 22:56:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906826480] [2024-11-16 22:56:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:46,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 22:56:46,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 22:56:46,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:56:46,697 INFO L87 Difference]: Start difference. First operand 1040 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:47,302 INFO L93 Difference]: Finished difference Result 2464 states and 3609 transitions. [2024-11-16 22:56:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:56:47,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-16 22:56:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:47,309 INFO L225 Difference]: With dead ends: 2464 [2024-11-16 22:56:47,310 INFO L226 Difference]: Without dead ends: 1428 [2024-11-16 22:56:47,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:56:47,315 INFO L432 NwaCegarLoop]: 1439 mSDtfsCounter, 550 mSDsluCounter, 4610 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 6049 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:47,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 6049 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 22:56:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-16 22:56:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1043. [2024-11-16 22:56:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1025 states have (on average 1.464390243902439) internal successors, (1501), 1030 states have internal predecessors, (1501), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:56:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1528 transitions. [2024-11-16 22:56:47,348 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1528 transitions. Word has length 147 [2024-11-16 22:56:47,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:47,349 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1528 transitions. [2024-11-16 22:56:47,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:47,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1528 transitions. [2024-11-16 22:56:47,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-16 22:56:47,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:47,356 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:47,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 22:56:47,358 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:47,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1103512388, now seen corresponding path program 1 times [2024-11-16 22:56:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:47,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614304043] [2024-11-16 22:56:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:47,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:56:47,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614304043] [2024-11-16 22:56:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614304043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:47,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:47,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:56:47,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035933235] [2024-11-16 22:56:47,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:47,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:56:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:56:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:56:47,804 INFO L87 Difference]: Start difference. First operand 1043 states and 1528 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:48,119 INFO L93 Difference]: Finished difference Result 2037 states and 2983 transitions. [2024-11-16 22:56:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:56:48,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-16 22:56:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:48,126 INFO L225 Difference]: With dead ends: 2037 [2024-11-16 22:56:48,127 INFO L226 Difference]: Without dead ends: 1001 [2024-11-16 22:56:48,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:56:48,132 INFO L432 NwaCegarLoop]: 1310 mSDtfsCounter, 30 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:48,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3910 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:56:48,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2024-11-16 22:56:48,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2024-11-16 22:56:48,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 983 states have (on average 1.4486266531027467) internal successors, (1424), 988 states have internal predecessors, (1424), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:56:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1451 transitions. [2024-11-16 22:56:48,157 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1451 transitions. Word has length 219 [2024-11-16 22:56:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:48,157 INFO L471 AbstractCegarLoop]: Abstraction has 1001 states and 1451 transitions. [2024-11-16 22:56:48,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1451 transitions. [2024-11-16 22:56:48,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-16 22:56:48,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:48,162 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:48,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 22:56:48,162 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:48,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2146353451, now seen corresponding path program 1 times [2024-11-16 22:56:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:48,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392137212] [2024-11-16 22:56:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:48,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:56:48,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:48,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392137212] [2024-11-16 22:56:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392137212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:48,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:48,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 22:56:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278972135] [2024-11-16 22:56:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:48,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 22:56:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:48,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 22:56:48,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:56:48,385 INFO L87 Difference]: Start difference. First operand 1001 states and 1451 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:48,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:48,717 INFO L93 Difference]: Finished difference Result 2532 states and 3684 transitions. [2024-11-16 22:56:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 22:56:48,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-16 22:56:48,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:48,725 INFO L225 Difference]: With dead ends: 2532 [2024-11-16 22:56:48,726 INFO L226 Difference]: Without dead ends: 1538 [2024-11-16 22:56:48,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:56:48,731 INFO L432 NwaCegarLoop]: 1327 mSDtfsCounter, 721 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:48,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 2636 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:56:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2024-11-16 22:56:48,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1377. [2024-11-16 22:56:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1357 states have (on average 1.4517317612380252) internal successors, (1970), 1362 states have internal predecessors, (1970), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 22:56:48,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2001 transitions. [2024-11-16 22:56:48,772 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2001 transitions. Word has length 219 [2024-11-16 22:56:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:48,772 INFO L471 AbstractCegarLoop]: Abstraction has 1377 states and 2001 transitions. [2024-11-16 22:56:48,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:56:48,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2001 transitions. [2024-11-16 22:56:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-16 22:56:48,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:48,776 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:48,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 22:56:48,777 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:48,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:48,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1292258635, now seen corresponding path program 1 times [2024-11-16 22:56:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496713863] [2024-11-16 22:56:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:48,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:49,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:56:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:49,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:56:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:56:49,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496713863] [2024-11-16 22:56:49,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496713863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:49,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:49,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:56:49,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954652612] [2024-11-16 22:56:49,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:49,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:56:49,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:56:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:56:49,249 INFO L87 Difference]: Start difference. First operand 1377 states and 2001 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:56:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:50,011 INFO L93 Difference]: Finished difference Result 2622 states and 3821 transitions. [2024-11-16 22:56:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:56:50,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 234 [2024-11-16 22:56:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:50,018 INFO L225 Difference]: With dead ends: 2622 [2024-11-16 22:56:50,019 INFO L226 Difference]: Without dead ends: 1338 [2024-11-16 22:56:50,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:56:50,022 INFO L432 NwaCegarLoop]: 1211 mSDtfsCounter, 53 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 4691 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:50,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4691 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 22:56:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2024-11-16 22:56:50,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1335. [2024-11-16 22:56:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1315 states have (on average 1.4395437262357413) internal successors, (1893), 1320 states have internal predecessors, (1893), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 22:56:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1924 transitions. [2024-11-16 22:56:50,063 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1924 transitions. Word has length 234 [2024-11-16 22:56:50,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:50,064 INFO L471 AbstractCegarLoop]: Abstraction has 1335 states and 1924 transitions. [2024-11-16 22:56:50,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:56:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1924 transitions. [2024-11-16 22:56:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-16 22:56:50,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:50,068 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:50,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 22:56:50,069 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:50,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2054111332, now seen corresponding path program 1 times [2024-11-16 22:56:50,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:50,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888708177] [2024-11-16 22:56:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:50,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:50,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:56:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:50,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:56:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:56:50,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:50,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888708177] [2024-11-16 22:56:50,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888708177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:50,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:50,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:56:50,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407741336] [2024-11-16 22:56:50,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:50,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:56:50,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:56:50,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:56:50,432 INFO L87 Difference]: Start difference. First operand 1335 states and 1924 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:56:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:51,129 INFO L93 Difference]: Finished difference Result 3157 states and 4576 transitions. [2024-11-16 22:56:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:56:51,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 234 [2024-11-16 22:56:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:51,140 INFO L225 Difference]: With dead ends: 3157 [2024-11-16 22:56:51,140 INFO L226 Difference]: Without dead ends: 1915 [2024-11-16 22:56:51,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:56:51,143 INFO L432 NwaCegarLoop]: 1258 mSDtfsCounter, 624 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:51,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 3589 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:56:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2024-11-16 22:56:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1907. [2024-11-16 22:56:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1881 states have (on average 1.442849548112706) internal successors, (2714), 1886 states have internal predecessors, (2714), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 22:56:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2757 transitions. [2024-11-16 22:56:51,206 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2757 transitions. Word has length 234 [2024-11-16 22:56:51,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:51,208 INFO L471 AbstractCegarLoop]: Abstraction has 1907 states and 2757 transitions. [2024-11-16 22:56:51,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:56:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2757 transitions. [2024-11-16 22:56:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-16 22:56:51,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:51,213 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:51,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 22:56:51,213 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:51,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:51,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1196426552, now seen corresponding path program 1 times [2024-11-16 22:56:51,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:51,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518449658] [2024-11-16 22:56:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:51,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:51,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:56:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:51,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:56:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:51,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:56:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:51,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:56:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:56:51,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:51,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518449658] [2024-11-16 22:56:51,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518449658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:51,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:51,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:56:51,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456648759] [2024-11-16 22:56:51,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:51,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:56:51,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:56:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:56:51,629 INFO L87 Difference]: Start difference. First operand 1907 states and 2757 transitions. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 22:56:52,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:52,500 INFO L93 Difference]: Finished difference Result 3143 states and 4556 transitions. [2024-11-16 22:56:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:56:52,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 249 [2024-11-16 22:56:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:52,508 INFO L225 Difference]: With dead ends: 3143 [2024-11-16 22:56:52,509 INFO L226 Difference]: Without dead ends: 1477 [2024-11-16 22:56:52,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:56:52,513 INFO L432 NwaCegarLoop]: 1260 mSDtfsCounter, 2414 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:52,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2418 Valid, 2587 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 22:56:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2024-11-16 22:56:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1474. [2024-11-16 22:56:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1453 states have (on average 1.428079834824501) internal successors, (2075), 1458 states have internal predecessors, (2075), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 22:56:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2108 transitions. [2024-11-16 22:56:52,567 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2108 transitions. Word has length 249 [2024-11-16 22:56:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:52,568 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2108 transitions. [2024-11-16 22:56:52,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 22:56:52,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2108 transitions. [2024-11-16 22:56:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-16 22:56:52,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:52,572 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:52,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 22:56:52,572 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:52,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:52,573 INFO L85 PathProgramCache]: Analyzing trace with hash 139927555, now seen corresponding path program 1 times [2024-11-16 22:56:52,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:52,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799957900] [2024-11-16 22:56:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:52,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:53,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:56:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:53,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:56:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:53,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:56:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:53,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:56:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 22:56:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:53,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799957900] [2024-11-16 22:56:53,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799957900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:53,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:53,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:56:53,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213739937] [2024-11-16 22:56:53,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:53,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:56:53,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:56:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:56:53,034 INFO L87 Difference]: Start difference. First operand 1474 states and 2108 transitions. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:56:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:53,770 INFO L93 Difference]: Finished difference Result 2363 states and 3429 transitions. [2024-11-16 22:56:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:56:53,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 260 [2024-11-16 22:56:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:53,777 INFO L225 Difference]: With dead ends: 2363 [2024-11-16 22:56:53,778 INFO L226 Difference]: Without dead ends: 1435 [2024-11-16 22:56:53,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:56:53,780 INFO L432 NwaCegarLoop]: 1133 mSDtfsCounter, 56 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 4382 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:53,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 4382 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 22:56:53,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2024-11-16 22:56:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1432. [2024-11-16 22:56:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1411 states have (on average 1.416017009213324) internal successors, (1998), 1416 states have internal predecessors, (1998), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 22:56:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2031 transitions. [2024-11-16 22:56:53,821 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2031 transitions. Word has length 260 [2024-11-16 22:56:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:53,821 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 2031 transitions. [2024-11-16 22:56:53,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:56:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2031 transitions. [2024-11-16 22:56:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-16 22:56:53,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:53,825 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:53,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 22:56:53,825 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:53,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1250776460, now seen corresponding path program 1 times [2024-11-16 22:56:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:53,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74166612] [2024-11-16 22:56:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:53,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:54,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:56:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:54,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:56:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:54,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:56:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:54,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:56:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 22:56:54,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:54,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74166612] [2024-11-16 22:56:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74166612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:54,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:56:54,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:56:54,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944297930] [2024-11-16 22:56:54,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:54,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:56:54,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:56:54,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:56:54,195 INFO L87 Difference]: Start difference. First operand 1432 states and 2031 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:56:54,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:56:54,817 INFO L93 Difference]: Finished difference Result 2295 states and 3311 transitions. [2024-11-16 22:56:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:56:54,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 260 [2024-11-16 22:56:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:56:54,825 INFO L225 Difference]: With dead ends: 2295 [2024-11-16 22:56:54,825 INFO L226 Difference]: Without dead ends: 1435 [2024-11-16 22:56:54,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:56:54,828 INFO L432 NwaCegarLoop]: 1148 mSDtfsCounter, 25 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:56:54,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3292 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:56:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2024-11-16 22:56:54,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1432. [2024-11-16 22:56:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1411 states have (on average 1.4138908575478384) internal successors, (1995), 1416 states have internal predecessors, (1995), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 22:56:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2028 transitions. [2024-11-16 22:56:54,871 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2028 transitions. Word has length 260 [2024-11-16 22:56:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:56:54,872 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 2028 transitions. [2024-11-16 22:56:54,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:56:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2028 transitions. [2024-11-16 22:56:54,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-16 22:56:54,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:56:54,875 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:56:54,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 22:56:54,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:56:54,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:56:54,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2050878537, now seen corresponding path program 1 times [2024-11-16 22:56:54,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:56:54,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752259400] [2024-11-16 22:56:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:54,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:56:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:56,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:56:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:56,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:56:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:56,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:56:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:56,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:56:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:56:56,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:56:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752259400] [2024-11-16 22:56:56,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752259400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:56:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316107949] [2024-11-16 22:56:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:56:56,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:56:56,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:56:56,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:56:56,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 22:56:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:56:56,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 22:56:56,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:56:57,347 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 36 treesize of output 13 [2024-11-16 22:56:57,369 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 15 treesize of output 7 [2024-11-16 22:56:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:56:57,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:56:57,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316107949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:56:57,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:56:57,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-16 22:56:57,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433413595] [2024-11-16 22:56:57,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:56:57,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:56:57,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:56:57,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:56:57,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-16 22:56:57,390 INFO L87 Difference]: Start difference. First operand 1432 states and 2028 transitions. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:57:01,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 22:57:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:57:02,152 INFO L93 Difference]: Finished difference Result 2651 states and 3770 transitions. [2024-11-16 22:57:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 22:57:02,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 260 [2024-11-16 22:57:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:57:02,161 INFO L225 Difference]: With dead ends: 2651 [2024-11-16 22:57:02,161 INFO L226 Difference]: Without dead ends: 1761 [2024-11-16 22:57:02,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 256 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-16 22:57:02,164 INFO L432 NwaCegarLoop]: 1119 mSDtfsCounter, 1282 mSDsluCounter, 3697 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 4816 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:57:02,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 4816 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 728 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-16 22:57:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2024-11-16 22:57:02,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1605. [2024-11-16 22:57:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1574 states have (on average 1.4059720457433291) internal successors, (2213), 1583 states have internal predecessors, (2213), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 17 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-16 22:57:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2260 transitions. [2024-11-16 22:57:02,210 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2260 transitions. Word has length 260 [2024-11-16 22:57:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:57:02,211 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 2260 transitions. [2024-11-16 22:57:02,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:57:02,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2260 transitions. [2024-11-16 22:57:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-16 22:57:02,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:57:02,215 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:57:02,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 22:57:02,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 22:57:02,416 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:57:02,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:57:02,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1982120609, now seen corresponding path program 1 times [2024-11-16 22:57:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:57:02,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336377342] [2024-11-16 22:57:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:57:02,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:57:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:03,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:57:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:04,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:57:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:04,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:57:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:04,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:57:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 75 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:57:04,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:57:04,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336377342] [2024-11-16 22:57:04,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336377342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:57:04,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685880592] [2024-11-16 22:57:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:57:04,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:57:04,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:57:04,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:57:04,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 22:57:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:04,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 22:57:04,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:57:04,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 22:57:05,239 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 36 treesize of output 13 [2024-11-16 22:57:05,249 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 15 treesize of output 7 [2024-11-16 22:57:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 75 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:57:05,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:57:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 75 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:57:05,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685880592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:57:05,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:57:05,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 13 [2024-11-16 22:57:05,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444125179] [2024-11-16 22:57:05,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:57:05,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 22:57:05,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:57:05,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 22:57:05,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-16 22:57:05,600 INFO L87 Difference]: Start difference. First operand 1605 states and 2260 transitions. Second operand has 13 states, 13 states have (on average 38.0) internal successors, (494), 12 states have internal predecessors, (494), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-16 22:57:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:57:07,180 INFO L93 Difference]: Finished difference Result 3936 states and 5515 transitions. [2024-11-16 22:57:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 22:57:07,181 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.0) internal successors, (494), 12 states have internal predecessors, (494), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 338 [2024-11-16 22:57:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:57:07,192 INFO L225 Difference]: With dead ends: 3936 [2024-11-16 22:57:07,192 INFO L226 Difference]: Without dead ends: 2572 [2024-11-16 22:57:07,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 673 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-16 22:57:07,197 INFO L432 NwaCegarLoop]: 1122 mSDtfsCounter, 2380 mSDsluCounter, 6945 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 8067 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:57:07,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2418 Valid, 8067 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 22:57:07,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2024-11-16 22:57:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2271. [2024-11-16 22:57:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2228 states have (on average 1.3819569120287254) internal successors, (3079), 2237 states have internal predecessors, (3079), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-16 22:57:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3148 transitions. [2024-11-16 22:57:07,276 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3148 transitions. Word has length 338 [2024-11-16 22:57:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:57:07,277 INFO L471 AbstractCegarLoop]: Abstraction has 2271 states and 3148 transitions. [2024-11-16 22:57:07,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.0) internal successors, (494), 12 states have internal predecessors, (494), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-16 22:57:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3148 transitions. [2024-11-16 22:57:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-16 22:57:07,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:57:07,293 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:57:07,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 22:57:07,494 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,SelfDestructingSolverStorable11 [2024-11-16 22:57:07,495 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:57:07,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:57:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash 603323331, now seen corresponding path program 1 times [2024-11-16 22:57:07,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:57:07,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576721203] [2024-11-16 22:57:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:57:07,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:57:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:14,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:57:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:14,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:57:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:14,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:57:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:14,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:57:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 300 proven. 908 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:57:14,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:57:14,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576721203] [2024-11-16 22:57:14,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576721203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:57:14,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570236279] [2024-11-16 22:57:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:57:14,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:57:14,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:57:14,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:57:14,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 22:57:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:15,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 3775 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 22:57:15,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:57:15,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 22:57:15,889 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 36 treesize of output 13 [2024-11-16 22:57:16,097 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 36 treesize of output 13 [2024-11-16 22:57:16,347 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 36 treesize of output 13 [2024-11-16 22:57:16,560 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 36 treesize of output 13 [2024-11-16 22:57:16,569 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 15 treesize of output 7 [2024-11-16 22:57:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 300 proven. 908 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:57:16,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:57:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 300 proven. 908 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:57:17,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570236279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:57:17,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:57:17,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 22 [2024-11-16 22:57:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674744784] [2024-11-16 22:57:17,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:57:17,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 22:57:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:57:17,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 22:57:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-16 22:57:17,485 INFO L87 Difference]: Start difference. First operand 2271 states and 3148 transitions. Second operand has 22 states, 22 states have (on average 63.63636363636363) internal successors, (1400), 21 states have internal predecessors, (1400), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-16 22:57:19,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:57:19,580 INFO L93 Difference]: Finished difference Result 5718 states and 7930 transitions. [2024-11-16 22:57:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 22:57:19,581 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 63.63636363636363) internal successors, (1400), 21 states have internal predecessors, (1400), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 788 [2024-11-16 22:57:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:57:19,600 INFO L225 Difference]: With dead ends: 5718 [2024-11-16 22:57:19,600 INFO L226 Difference]: Without dead ends: 4354 [2024-11-16 22:57:19,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1610 GetRequests, 1572 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 22:57:19,606 INFO L432 NwaCegarLoop]: 1122 mSDtfsCounter, 5534 mSDsluCounter, 10298 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5620 SdHoareTripleChecker+Valid, 11420 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 22:57:19,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5620 Valid, 11420 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 22:57:19,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2024-11-16 22:57:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 4053. [2024-11-16 22:57:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4053 states, 3986 states have (on average 1.3595082789764175) internal successors, (5419), 3995 states have internal predecessors, (5419), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-16 22:57:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 5536 transitions. [2024-11-16 22:57:19,735 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 5536 transitions. Word has length 788 [2024-11-16 22:57:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:57:19,736 INFO L471 AbstractCegarLoop]: Abstraction has 4053 states and 5536 transitions. [2024-11-16 22:57:19,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 63.63636363636363) internal successors, (1400), 21 states have internal predecessors, (1400), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-16 22:57:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 5536 transitions. [2024-11-16 22:57:19,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2024-11-16 22:57:19,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:57:19,822 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:57:19,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 22:57:20,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:57:20,024 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:57:20,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:57:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1775108985, now seen corresponding path program 2 times [2024-11-16 22:57:20,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:57:20,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514301207] [2024-11-16 22:57:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:57:20,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:57:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:28,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:57:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:28,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:57:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:28,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:57:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:28,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:57:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 2042 proven. 77 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2024-11-16 22:57:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:57:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514301207] [2024-11-16 22:57:28,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514301207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:57:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433687692] [2024-11-16 22:57:28,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 22:57:28,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:57:28,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:57:28,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:57:28,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 22:57:29,503 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 22:57:29,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 22:57:29,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 22:57:29,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:57:29,587 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 11 treesize of output 7 [2024-11-16 22:57:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7538 trivial. 0 not checked. [2024-11-16 22:57:30,265 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:57:30,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433687692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:57:30,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:57:30,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-16 22:57:30,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106976136] [2024-11-16 22:57:30,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:57:30,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 22:57:30,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:57:30,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 22:57:30,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-16 22:57:30,270 INFO L87 Difference]: Start difference. First operand 4053 states and 5536 transitions. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:57:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:57:31,769 INFO L93 Difference]: Finished difference Result 4925 states and 6825 transitions. [2024-11-16 22:57:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 22:57:31,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1688 [2024-11-16 22:57:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:57:31,793 INFO L225 Difference]: With dead ends: 4925 [2024-11-16 22:57:31,797 INFO L226 Difference]: Without dead ends: 4059 [2024-11-16 22:57:31,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1712 GetRequests, 1689 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-16 22:57:31,801 INFO L432 NwaCegarLoop]: 1156 mSDtfsCounter, 398 mSDsluCounter, 6116 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 7272 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:57:31,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 7272 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 22:57:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2024-11-16 22:57:31,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 4056. [2024-11-16 22:57:31,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 3989 states have (on average 1.3592379042366507) internal successors, (5422), 3998 states have internal predecessors, (5422), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-16 22:57:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 5539 transitions. [2024-11-16 22:57:31,903 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 5539 transitions. Word has length 1688 [2024-11-16 22:57:31,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:57:31,905 INFO L471 AbstractCegarLoop]: Abstraction has 4056 states and 5539 transitions. [2024-11-16 22:57:31,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:57:31,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 5539 transitions. [2024-11-16 22:57:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2024-11-16 22:57:31,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:57:31,927 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:57:31,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 22:57:32,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:57:32,128 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:57:32,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:57:32,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1881818357, now seen corresponding path program 1 times [2024-11-16 22:57:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:57:32,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635827782] [2024-11-16 22:57:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:57:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:57:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:34,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:57:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:34,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:57:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:34,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:57:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:34,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:57:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7538 trivial. 0 not checked. [2024-11-16 22:57:34,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:57:34,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635827782] [2024-11-16 22:57:34,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635827782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:57:34,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:57:34,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:57:34,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366325214] [2024-11-16 22:57:34,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:57:34,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:57:34,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:57:34,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:57:34,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:57:34,872 INFO L87 Difference]: Start difference. First operand 4056 states and 5539 transitions. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 4 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:57:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:57:35,596 INFO L93 Difference]: Finished difference Result 4934 states and 6878 transitions. [2024-11-16 22:57:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:57:35,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 4 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1688 [2024-11-16 22:57:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:57:35,616 INFO L225 Difference]: With dead ends: 4934 [2024-11-16 22:57:35,617 INFO L226 Difference]: Without dead ends: 4056 [2024-11-16 22:57:35,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:57:35,623 INFO L432 NwaCegarLoop]: 1133 mSDtfsCounter, 32 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:57:35,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4379 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:57:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2024-11-16 22:57:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 4047. [2024-11-16 22:57:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 3980 states have (on average 1.3595477386934673) internal successors, (5411), 3989 states have internal predecessors, (5411), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-16 22:57:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5528 transitions. [2024-11-16 22:57:35,776 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5528 transitions. Word has length 1688 [2024-11-16 22:57:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:57:35,779 INFO L471 AbstractCegarLoop]: Abstraction has 4047 states and 5528 transitions. [2024-11-16 22:57:35,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 4 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:57:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5528 transitions. [2024-11-16 22:57:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1690 [2024-11-16 22:57:35,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:57:35,821 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:57:35,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 22:57:35,821 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:57:35,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:57:35,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1552854877, now seen corresponding path program 1 times [2024-11-16 22:57:35,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:57:35,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541532314] [2024-11-16 22:57:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:57:35,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:57:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:42,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:57:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:42,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:57:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:42,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:57:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:42,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:57:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:57:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 2042 proven. 77 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2024-11-16 22:57:42,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:57:42,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541532314] [2024-11-16 22:57:42,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541532314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:57:42,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828666534] [2024-11-16 22:57:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:57:42,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:57:42,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:57:42,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:57:42,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process