./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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_SFH_test4-2.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 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:02:01,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:02:01,301 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 14:02:01,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:02:01,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:02:01,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:02:01,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:02:01,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:02:01,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 14:02:01,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 14:02:01,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:02:01,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:02:01,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:02:01,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:02:01,330 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:02:01,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:02:01,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 14:02:01,331 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:02:01,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:02:01,332 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:02:01,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:02:01,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 14:02:01,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:02:01,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 14:02:01,334 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:02:01,334 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:02:01,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 14:02:01,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:02:01,335 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:02:01,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:02:01,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 14:02:01,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:02:01,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:02:01,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:02:01,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:02:01,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 14:02:01,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:02:01,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:02:01,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:02:01,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:02:01,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:02:01,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:02:01,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2024-11-10 14:02:01,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:02:01,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:02:01,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:02:01,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:02:01,608 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:02:01,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2024-11-10 14:02:02,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:02:03,288 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:02:03,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2024-11-10 14:02:03,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4c74c0a/29afec2a7e4c4bb19d108f10230ff226/FLAG1ca64e027 [2024-11-10 14:02:03,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4c74c0a/29afec2a7e4c4bb19d108f10230ff226 [2024-11-10 14:02:03,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:02:03,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:02:03,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:02:03,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:02:03,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:02:03,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:02:03" (1/1) ... [2024-11-10 14:02:03,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6631517d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:03, skipping insertion in model container [2024-11-10 14:02:03,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:02:03" (1/1) ... [2024-11-10 14:02:03,390 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:02:03,798 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_SFH_test4-2.i[33021,33034] [2024-11-10 14:02:03,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:02:03,993 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:02:04,033 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_SFH_test4-2.i[33021,33034] [2024-11-10 14:02:04,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:02:04,153 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:02:04,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04 WrapperNode [2024-11-10 14:02:04,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:02:04,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:02:04,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:02:04,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:02:04,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,283 INFO L138 Inliner]: procedures = 176, calls = 386, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1713 [2024-11-10 14:02:04,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:02:04,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:02:04,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:02:04,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:02:04,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,421 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2024-11-10 14:02:04,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,484 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:02:04,521 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:02:04,521 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:02:04,522 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:02:04,523 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (1/1) ... [2024-11-10 14:02:04,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:02:04,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:02:04,554 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) [2024-11-10 14:02:04,556 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 [2024-11-10 14:02:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 14:02:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 14:02:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-10 14:02:04,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-10 14:02:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 14:02:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 14:02:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-10 14:02:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-10 14:02:04,594 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-10 14:02:04,594 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-10 14:02:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 14:02:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 14:02:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 14:02:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 14:02:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 14:02:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 14:02:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 14:02:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 14:02:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 14:02:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:02:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:02:04,818 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:02:04,821 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:02:06,617 INFO L? ?]: Removed 413 outVars from TransFormulas that were not future-live. [2024-11-10 14:02:06,617 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:02:06,686 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:02:06,687 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-10 14:02:06,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:02:06 BoogieIcfgContainer [2024-11-10 14:02:06,687 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:02:06,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:02:06,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:02:06,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:02:06,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:02:03" (1/3) ... [2024-11-10 14:02:06,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6619093a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:02:06, skipping insertion in model container [2024-11-10 14:02:06,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:02:04" (2/3) ... [2024-11-10 14:02:06,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6619093a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:02:06, skipping insertion in model container [2024-11-10 14:02:06,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:02:06" (3/3) ... [2024-11-10 14:02:06,697 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-2.i [2024-11-10 14:02:06,714 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:02:06,715 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 14:02:06,793 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:02:06,798 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;@b02b6a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:02:06,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 14:02:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 465 states, 445 states have (on average 1.6112359550561797) internal successors, (717), 456 states have internal predecessors, (717), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 14:02:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-10 14:02:06,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:06,813 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:02:06,814 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:06,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:06,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1300402004, now seen corresponding path program 1 times [2024-11-10 14:02:06,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:06,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656863614] [2024-11-10 14:02:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:06,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:02:06,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656863614] [2024-11-10 14:02:06,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656863614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:02:06,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:02:06,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:02:06,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955087716] [2024-11-10 14:02:06,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:02:06,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 14:02:06,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:07,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 14:02:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 14:02:07,019 INFO L87 Difference]: Start difference. First operand has 465 states, 445 states have (on average 1.6112359550561797) internal successors, (717), 456 states have internal predecessors, (717), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:07,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:07,184 INFO L93 Difference]: Finished difference Result 928 states and 1506 transitions. [2024-11-10 14:02:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 14:02:07,187 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-10 14:02:07,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:07,203 INFO L225 Difference]: With dead ends: 928 [2024-11-10 14:02:07,204 INFO L226 Difference]: Without dead ends: 426 [2024-11-10 14:02:07,214 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 [2024-11-10 14:02:07,217 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:07,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 627 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:02:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-10 14:02:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2024-11-10 14:02:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 407 states have (on average 1.4447174447174447) internal successors, (588), 417 states have internal predecessors, (588), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 14:02:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 620 transitions. [2024-11-10 14:02:07,278 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 620 transitions. Word has length 11 [2024-11-10 14:02:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:07,279 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 620 transitions. [2024-11-10 14:02:07,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 620 transitions. [2024-11-10 14:02:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 14:02:07,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:07,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:02:07,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:02:07,281 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:07,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:07,281 INFO L85 PathProgramCache]: Analyzing trace with hash 52342368, now seen corresponding path program 1 times [2024-11-10 14:02:07,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:07,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883484121] [2024-11-10 14:02:07,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:07,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:02:07,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883484121] [2024-11-10 14:02:07,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883484121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:02:07,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:02:07,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:02:07,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171901186] [2024-11-10 14:02:07,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:02:07,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:02:07,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:07,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:02:07,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:02:07,382 INFO L87 Difference]: Start difference. First operand 426 states and 620 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:07,559 INFO L93 Difference]: Finished difference Result 846 states and 1234 transitions. [2024-11-10 14:02:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:02:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-10 14:02:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:07,565 INFO L225 Difference]: With dead ends: 846 [2024-11-10 14:02:07,565 INFO L226 Difference]: Without dead ends: 815 [2024-11-10 14:02:07,566 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 [2024-11-10 14:02:07,567 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 549 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:07,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1185 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:02:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-10 14:02:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 428. [2024-11-10 14:02:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 409 states have (on average 1.4425427872860637) internal successors, (590), 419 states have internal predecessors, (590), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 14:02:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 622 transitions. [2024-11-10 14:02:07,608 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 622 transitions. Word has length 12 [2024-11-10 14:02:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:07,609 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 622 transitions. [2024-11-10 14:02:07,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 622 transitions. [2024-11-10 14:02:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-10 14:02:07,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:07,616 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] [2024-11-10 14:02:07,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:02:07,617 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:07,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1825676455, now seen corresponding path program 1 times [2024-11-10 14:02:07,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:07,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590376708] [2024-11-10 14:02:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:07,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:02:08,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:08,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590376708] [2024-11-10 14:02:08,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590376708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:02:08,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:02:08,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:02:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353999841] [2024-11-10 14:02:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:02:08,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:02:08,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:02:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:02:08,191 INFO L87 Difference]: Start difference. First operand 428 states and 622 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:08,390 INFO L93 Difference]: Finished difference Result 855 states and 1243 transitions. [2024-11-10 14:02:08,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:02:08,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-10 14:02:08,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:08,393 INFO L225 Difference]: With dead ends: 855 [2024-11-10 14:02:08,394 INFO L226 Difference]: Without dead ends: 431 [2024-11-10 14:02:08,399 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 [2024-11-10 14:02:08,400 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 106 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:08,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1559 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 14:02:08,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-10 14:02:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 428. [2024-11-10 14:02:08,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 409 states have (on average 1.4254278728606358) internal successors, (583), 419 states have internal predecessors, (583), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 14:02:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 615 transitions. [2024-11-10 14:02:08,422 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 615 transitions. Word has length 161 [2024-11-10 14:02:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:08,423 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 615 transitions. [2024-11-10 14:02:08,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 615 transitions. [2024-11-10 14:02:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-10 14:02:08,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:08,426 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] [2024-11-10 14:02:08,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 14:02:08,427 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:08,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:08,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1704966944, now seen corresponding path program 1 times [2024-11-10 14:02:08,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:08,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113298245] [2024-11-10 14:02:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:08,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:02:08,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:08,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113298245] [2024-11-10 14:02:08,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113298245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:02:08,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:02:08,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:02:08,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897327445] [2024-11-10 14:02:08,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:02:08,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:02:08,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:08,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:02:08,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:02:08,745 INFO L87 Difference]: Start difference. First operand 428 states and 615 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:08,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:08,904 INFO L93 Difference]: Finished difference Result 804 states and 1151 transitions. [2024-11-10 14:02:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:02:08,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-10 14:02:08,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:08,908 INFO L225 Difference]: With dead ends: 804 [2024-11-10 14:02:08,908 INFO L226 Difference]: Without dead ends: 380 [2024-11-10 14:02:08,912 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 [2024-11-10 14:02:08,913 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 9 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:08,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1426 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:02:08,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-10 14:02:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-10 14:02:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 361 states have (on average 1.3933518005540166) internal successors, (503), 371 states have internal predecessors, (503), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 14:02:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 535 transitions. [2024-11-10 14:02:08,928 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 535 transitions. Word has length 161 [2024-11-10 14:02:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:08,930 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 535 transitions. [2024-11-10 14:02:08,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 535 transitions. [2024-11-10 14:02:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-10 14:02:08,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:08,933 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] [2024-11-10 14:02:08,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 14:02:08,934 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:08,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:08,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1141993505, now seen corresponding path program 1 times [2024-11-10 14:02:08,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:08,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886278393] [2024-11-10 14:02:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:08,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:02:09,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:09,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886278393] [2024-11-10 14:02:09,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886278393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:02:09,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:02:09,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:02:09,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973596602] [2024-11-10 14:02:09,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:02:09,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:02:09,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:09,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:02:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:02:09,197 INFO L87 Difference]: Start difference. First operand 380 states and 535 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:09,352 INFO L93 Difference]: Finished difference Result 838 states and 1176 transitions. [2024-11-10 14:02:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:02:09,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-10 14:02:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:09,356 INFO L225 Difference]: With dead ends: 838 [2024-11-10 14:02:09,357 INFO L226 Difference]: Without dead ends: 462 [2024-11-10 14:02:09,359 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 [2024-11-10 14:02:09,362 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 54 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:09,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 987 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:02:09,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-10 14:02:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2024-11-10 14:02:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 443 states have (on average 1.381489841986456) internal successors, (612), 453 states have internal predecessors, (612), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 14:02:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 644 transitions. [2024-11-10 14:02:09,382 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 644 transitions. Word has length 161 [2024-11-10 14:02:09,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:09,383 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 644 transitions. [2024-11-10 14:02:09,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:02:09,384 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 644 transitions. [2024-11-10 14:02:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-10 14:02:09,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:09,386 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] [2024-11-10 14:02:09,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 14:02:09,387 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:09,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:09,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1326339478, now seen corresponding path program 1 times [2024-11-10 14:02:09,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:09,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707395828] [2024-11-10 14:02:09,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:09,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:09,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 14:02:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:09,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 14:02:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 14:02:09,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:09,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707395828] [2024-11-10 14:02:09,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707395828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:02:09,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:02:09,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:02:09,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108611971] [2024-11-10 14:02:09,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:02:09,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:02:09,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:09,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:02:09,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:02:09,813 INFO L87 Difference]: Start difference. First operand 462 states and 644 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 14:02:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:10,320 INFO L93 Difference]: Finished difference Result 799 states and 1118 transitions. [2024-11-10 14:02:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:02:10,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-10 14:02:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:10,323 INFO L225 Difference]: With dead ends: 799 [2024-11-10 14:02:10,323 INFO L226 Difference]: Without dead ends: 423 [2024-11-10 14:02:10,326 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 [2024-11-10 14:02:10,327 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 44 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:10,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1439 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 14:02:10,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-10 14:02:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 420. [2024-11-10 14:02:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 401 states have (on average 1.3341645885286784) internal successors, (535), 411 states have internal predecessors, (535), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 14:02:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 567 transitions. [2024-11-10 14:02:10,339 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 567 transitions. Word has length 176 [2024-11-10 14:02:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:10,340 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 567 transitions. [2024-11-10 14:02:10,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 14:02:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 567 transitions. [2024-11-10 14:02:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-10 14:02:10,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:10,342 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] [2024-11-10 14:02:10,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:02:10,343 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:10,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash 961843872, now seen corresponding path program 1 times [2024-11-10 14:02:10,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:10,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28676386] [2024-11-10 14:02:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:10,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:10,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 14:02:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:10,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 14:02:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 14:02:10,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:10,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28676386] [2024-11-10 14:02:10,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28676386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:02:10,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:02:10,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:02:10,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951064884] [2024-11-10 14:02:10,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:02:10,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:02:10,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:02:10,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:02:10,713 INFO L87 Difference]: Start difference. First operand 420 states and 567 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 14:02:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:11,225 INFO L93 Difference]: Finished difference Result 751 states and 1024 transitions. [2024-11-10 14:02:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:02:11,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-10 14:02:11,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:11,229 INFO L225 Difference]: With dead ends: 751 [2024-11-10 14:02:11,229 INFO L226 Difference]: Without dead ends: 417 [2024-11-10 14:02:11,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:02:11,233 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 17 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:11,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1446 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 14:02:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-10 14:02:11,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 414. [2024-11-10 14:02:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 395 states have (on average 1.3291139240506329) internal successors, (525), 405 states have internal predecessors, (525), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 14:02:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 557 transitions. [2024-11-10 14:02:11,247 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 557 transitions. Word has length 176 [2024-11-10 14:02:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:11,249 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 557 transitions. [2024-11-10 14:02:11,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 14:02:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 557 transitions. [2024-11-10 14:02:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-10 14:02:11,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:11,251 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] [2024-11-10 14:02:11,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 14:02:11,251 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:11,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1426429980, now seen corresponding path program 1 times [2024-11-10 14:02:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:11,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799624225] [2024-11-10 14:02:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:11,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 14:02:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:11,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 14:02:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 14:02:11,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:11,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799624225] [2024-11-10 14:02:11,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799624225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:02:11,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:02:11,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:02:11,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770327115] [2024-11-10 14:02:11,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:02:11,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:02:11,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:02:11,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:02:11,597 INFO L87 Difference]: Start difference. First operand 414 states and 557 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 14:02:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:12,063 INFO L93 Difference]: Finished difference Result 887 states and 1203 transitions. [2024-11-10 14:02:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:02:12,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-10 14:02:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:12,067 INFO L225 Difference]: With dead ends: 887 [2024-11-10 14:02:12,067 INFO L226 Difference]: Without dead ends: 559 [2024-11-10 14:02:12,067 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 [2024-11-10 14:02:12,068 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 168 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:12,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1112 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:02:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-10 14:02:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 556. [2024-11-10 14:02:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 534 states have (on average 1.3258426966292134) internal successors, (708), 544 states have internal predecessors, (708), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-10 14:02:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 746 transitions. [2024-11-10 14:02:12,084 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 746 transitions. Word has length 176 [2024-11-10 14:02:12,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:12,084 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 746 transitions. [2024-11-10 14:02:12,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 14:02:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 746 transitions. [2024-11-10 14:02:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-10 14:02:12,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:12,087 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] [2024-11-10 14:02:12,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 14:02:12,087 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:12,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:12,088 INFO L85 PathProgramCache]: Analyzing trace with hash -401657797, now seen corresponding path program 1 times [2024-11-10 14:02:12,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:12,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436492175] [2024-11-10 14:02:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:12,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 14:02:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:12,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 14:02:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:12,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-10 14:02:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:12,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-10 14:02:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 14:02:12,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:12,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436492175] [2024-11-10 14:02:12,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436492175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:02:12,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423902230] [2024-11-10 14:02:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:12,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:02:12,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:02:12,446 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) [2024-11-10 14:02:12,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 14:02:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:12,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 14:02:13,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:02:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 14:02:13,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:02:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 14:02:13,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423902230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:02:13,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:02:13,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-10 14:02:13,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244846702] [2024-11-10 14:02:13,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:02:13,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 14:02:13,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:13,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 14:02:13,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:02:13,543 INFO L87 Difference]: Start difference. First operand 556 states and 746 transitions. Second operand has 8 states, 8 states have (on average 62.0) internal successors, (496), 7 states have internal predecessors, (496), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 14:02:14,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:14,489 INFO L93 Difference]: Finished difference Result 1241 states and 1689 transitions. [2024-11-10 14:02:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 14:02:14,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 62.0) internal successors, (496), 7 states have internal predecessors, (496), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 191 [2024-11-10 14:02:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:14,496 INFO L225 Difference]: With dead ends: 1241 [2024-11-10 14:02:14,496 INFO L226 Difference]: Without dead ends: 1210 [2024-11-10 14:02:14,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:02:14,497 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 1575 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:14,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2263 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 14:02:14,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-10 14:02:14,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1207. [2024-11-10 14:02:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1170 states have (on average 1.317094017094017) internal successors, (1541), 1180 states have internal predecessors, (1541), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-10 14:02:14,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1609 transitions. [2024-11-10 14:02:14,531 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1609 transitions. Word has length 191 [2024-11-10 14:02:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:14,532 INFO L471 AbstractCegarLoop]: Abstraction has 1207 states and 1609 transitions. [2024-11-10 14:02:14,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 62.0) internal successors, (496), 7 states have internal predecessors, (496), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 14:02:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1609 transitions. [2024-11-10 14:02:14,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-10 14:02:14,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:14,544 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-10 14:02:14,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 14:02:14,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:02:14,746 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:14,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash -927363062, now seen corresponding path program 1 times [2024-11-10 14:02:14,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:14,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59295890] [2024-11-10 14:02:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:14,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:02:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:16,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 14:02:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:16,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 14:02:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:16,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-10 14:02:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:16,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-10 14:02:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 14:02:16,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:02:16,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59295890] [2024-11-10 14:02:16,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59295890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:02:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21001831] [2024-11-10 14:02:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:16,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:02:16,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:02:16,388 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) [2024-11-10 14:02:16,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 14:02:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:02:17,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 3126 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 14:02:17,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:02:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 14:02:18,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:02:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 14:02:19,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21001831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:02:19,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:02:19,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-10 14:02:19,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515171021] [2024-11-10 14:02:19,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:02:19,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 14:02:19,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:02:19,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 14:02:19,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-10 14:02:19,012 INFO L87 Difference]: Start difference. First operand 1207 states and 1609 transitions. Second operand has 14 states, 14 states have (on average 99.28571428571429) internal successors, (1390), 13 states have internal predecessors, (1390), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 14:02:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:02:20,230 INFO L93 Difference]: Finished difference Result 2999 states and 4062 transitions. [2024-11-10 14:02:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 14:02:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 99.28571428571429) internal successors, (1390), 13 states have internal predecessors, (1390), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 638 [2024-11-10 14:02:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:02:20,245 INFO L225 Difference]: With dead ends: 2999 [2024-11-10 14:02:20,245 INFO L226 Difference]: Without dead ends: 2968 [2024-11-10 14:02:20,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1289 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-10 14:02:20,248 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 3351 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3455 SdHoareTripleChecker+Valid, 5058 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:02:20,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3455 Valid, 5058 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-10 14:02:20,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2024-11-10 14:02:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2965. [2024-11-10 14:02:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2892 states have (on average 1.3150069156293223) internal successors, (3803), 2902 states have internal predecessors, (3803), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-10 14:02:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 3943 transitions. [2024-11-10 14:02:20,346 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 3943 transitions. Word has length 638 [2024-11-10 14:02:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:02:20,347 INFO L471 AbstractCegarLoop]: Abstraction has 2965 states and 3943 transitions. [2024-11-10 14:02:20,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 99.28571428571429) internal successors, (1390), 13 states have internal predecessors, (1390), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 14:02:20,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 3943 transitions. [2024-11-10 14:02:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1533 [2024-11-10 14:02:20,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:02:20,406 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-10 14:02:20,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 14:02:20,606 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,SelfDestructingSolverStorable9 [2024-11-10 14:02:20,607 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 14:02:20,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:02:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1160100330, now seen corresponding path program 2 times [2024-11-10 14:02:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:02:20,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577018277] [2024-11-10 14:02:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:02:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms