./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.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 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 22:50:49,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 22:50:49,492 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 22:50:49,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 22:50:49,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 22:50:49,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 22:50:49,537 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 22:50:49,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 22:50:49,538 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 22:50:49,540 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 22:50:49,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 22:50:49,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 22:50:49,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 22:50:49,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 22:50:49,542 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 22:50:49,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 22:50:49,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 22:50:49,543 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 22:50:49,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 22:50:49,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 22:50:49,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 22:50:49,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 22:50:49,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 22:50:49,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 22:50:49,546 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 22:50:49,546 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 22:50:49,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 22:50:49,547 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 22:50:49,547 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 22:50:49,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 22:50:49,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 22:50:49,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 22:50:49,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:50:49,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 22:50:49,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 22:50:49,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 22:50:49,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 22:50:49,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 22:50:49,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 22:50:49,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 22:50:49,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 22:50:49,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 22:50:49,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2024-11-16 22:50:49,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 22:50:49,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 22:50:49,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 22:50:49,860 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 22:50:49,861 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 22:50:49,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2024-11-16 22:50:51,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 22:50:51,649 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 22:50:51,650 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2024-11-16 22:50:51,669 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8450570e3/302214a71ff94f9a8d98497f473ae421/FLAG2126c657f [2024-11-16 22:50:51,892 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8450570e3/302214a71ff94f9a8d98497f473ae421 [2024-11-16 22:50:51,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 22:50:51,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 22:50:51,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 22:50:51,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 22:50:51,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 22:50:51,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:50:51" (1/1) ... [2024-11-16 22:50:51,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a97b164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:51, skipping insertion in model container [2024-11-16 22:50:51,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:50:51" (1/1) ... [2024-11-16 22:50:51,967 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 22:50:52,438 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_BER_test4-3.i[33021,33034] [2024-11-16 22:50:52,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:50:52,622 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 22:50:52,663 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_BER_test4-3.i[33021,33034] [2024-11-16 22:50:52,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:50:52,819 INFO L204 MainTranslator]: Completed translation [2024-11-16 22:50:52,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52 WrapperNode [2024-11-16 22:50:52,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 22:50:52,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 22:50:52,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 22:50:52,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 22:50:52,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:52,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:52,969 INFO L138 Inliner]: procedures = 176, calls = 434, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1858 [2024-11-16 22:50:52,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 22:50:52,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 22:50:52,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 22:50:52,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 22:50:52,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:52,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:53,003 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:53,121 INFO L175 MemorySlicer]: Split 403 memory accesses to 2 slices as follows [2, 401]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 98 writes are split as follows [0, 98]. [2024-11-16 22:50:53,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:53,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:53,177 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:53,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:53,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:53,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:53,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 22:50:53,220 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 22:50:53,221 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 22:50:53,221 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 22:50:53,222 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (1/1) ... [2024-11-16 22:50:53,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:50:53,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:50:53,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 22:50:53,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 22:50:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 22:50:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 22:50:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 22:50:53,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 22:50:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 22:50:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 22:50:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 22:50:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 22:50:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 22:50:53,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 22:50:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 22:50:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 22:50:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 22:50:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 22:50:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 22:50:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 22:50:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 22:50:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 22:50:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 22:50:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 22:50:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 22:50:53,719 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 22:50:53,720 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 22:50:55,378 INFO L? ?]: Removed 429 outVars from TransFormulas that were not future-live. [2024-11-16 22:50:55,378 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 22:50:55,530 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 22:50:55,530 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-16 22:50:55,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:50:55 BoogieIcfgContainer [2024-11-16 22:50:55,531 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 22:50:55,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 22:50:55,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 22:50:55,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 22:50:55,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:50:51" (1/3) ... [2024-11-16 22:50:55,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfc6bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:50:55, skipping insertion in model container [2024-11-16 22:50:55,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:50:52" (2/3) ... [2024-11-16 22:50:55,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfc6bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:50:55, skipping insertion in model container [2024-11-16 22:50:55,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:50:55" (3/3) ... [2024-11-16 22:50:55,543 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2024-11-16 22:50:55,566 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 22:50:55,566 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 22:50:55,660 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 22:50:55,668 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;@14514277, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 22:50:55,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 22:50:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 492 states, 472 states have (on average 1.6144067796610169) internal successors, (762), 483 states have internal predecessors, (762), 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) [2024-11-16 22:50:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 22:50:55,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:55,683 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:50:55,683 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:55,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1929039484, now seen corresponding path program 1 times [2024-11-16 22:50:55,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:55,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710209537] [2024-11-16 22:50:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:50:55,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710209537] [2024-11-16 22:50:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710209537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:55,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:50:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 22:50:55,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234466807] [2024-11-16 22:50:55,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:55,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 22:50:55,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:55,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 22:50:55,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:50:55,900 INFO L87 Difference]: Start difference. First operand has 492 states, 472 states have (on average 1.6144067796610169) internal successors, (762), 483 states have internal predecessors, (762), 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) [2024-11-16 22:50:56,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:56,056 INFO L93 Difference]: Finished difference Result 982 states and 1596 transitions. [2024-11-16 22:50:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 22:50:56,060 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 [2024-11-16 22:50:56,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:56,073 INFO L225 Difference]: With dead ends: 982 [2024-11-16 22:50:56,074 INFO L226 Difference]: Without dead ends: 426 [2024-11-16 22:50:56,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:50:56,084 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:50:56,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 663 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:50:56,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-16 22:50:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2024-11-16 22:50:56,156 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) [2024-11-16 22:50:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 620 transitions. [2024-11-16 22:50:56,163 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 620 transitions. Word has length 11 [2024-11-16 22:50:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:56,163 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 620 transitions. [2024-11-16 22:50:56,164 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) [2024-11-16 22:50:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 620 transitions. [2024-11-16 22:50:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 22:50:56,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:56,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:50:56,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 22:50:56,165 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:56,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:56,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1276095904, now seen corresponding path program 1 times [2024-11-16 22:50:56,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:56,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274664403] [2024-11-16 22:50:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:56,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:50:56,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274664403] [2024-11-16 22:50:56,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274664403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:56,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:50:56,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 22:50:56,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496979398] [2024-11-16 22:50:56,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:56,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 22:50:56,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 22:50:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:50:56,269 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) [2024-11-16 22:50:56,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:56,461 INFO L93 Difference]: Finished difference Result 846 states and 1234 transitions. [2024-11-16 22:50:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 22:50:56,462 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 [2024-11-16 22:50:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:56,467 INFO L225 Difference]: With dead ends: 846 [2024-11-16 22:50:56,468 INFO L226 Difference]: Without dead ends: 815 [2024-11-16 22:50:56,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:50:56,470 INFO L432 NwaCegarLoop]: 622 mSDtfsCounter, 549 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:50:56,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1194 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:50:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-16 22:50:56,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 428. [2024-11-16 22:50:56,513 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) [2024-11-16 22:50:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 622 transitions. [2024-11-16 22:50:56,516 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 622 transitions. Word has length 12 [2024-11-16 22:50:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:56,516 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 622 transitions. [2024-11-16 22:50:56,517 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) [2024-11-16 22:50:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 622 transitions. [2024-11-16 22:50:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-16 22:50:56,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:56,525 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] [2024-11-16 22:50:56,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 22:50:56,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:56,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2066514825, now seen corresponding path program 1 times [2024-11-16 22:50:56,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:56,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738659745] [2024-11-16 22:50:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:50:57,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:57,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738659745] [2024-11-16 22:50:57,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738659745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:57,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:50:57,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:50:57,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402458323] [2024-11-16 22:50:57,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:57,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:50:57,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:50:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:50:57,179 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) [2024-11-16 22:50:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:57,398 INFO L93 Difference]: Finished difference Result 855 states and 1243 transitions. [2024-11-16 22:50:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:50:57,399 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 [2024-11-16 22:50:57,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:57,403 INFO L225 Difference]: With dead ends: 855 [2024-11-16 22:50:57,404 INFO L226 Difference]: Without dead ends: 431 [2024-11-16 22:50:57,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:50:57,406 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 [2024-11-16 22:50:57,407 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] [2024-11-16 22:50:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-16 22:50:57,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 428. [2024-11-16 22:50:57,425 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) [2024-11-16 22:50:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 615 transitions. [2024-11-16 22:50:57,429 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 615 transitions. Word has length 161 [2024-11-16 22:50:57,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:57,429 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 615 transitions. [2024-11-16 22:50:57,429 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) [2024-11-16 22:50:57,430 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 615 transitions. [2024-11-16 22:50:57,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-16 22:50:57,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:57,436 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] [2024-11-16 22:50:57,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 22:50:57,437 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:57,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1302190928, now seen corresponding path program 1 times [2024-11-16 22:50:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:57,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532034557] [2024-11-16 22:50:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:57,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:50:57,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:57,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532034557] [2024-11-16 22:50:57,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532034557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:57,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:50:57,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:50:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644884177] [2024-11-16 22:50:57,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:57,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:50:57,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:57,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:50:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:50:57,767 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) [2024-11-16 22:50:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:57,907 INFO L93 Difference]: Finished difference Result 804 states and 1151 transitions. [2024-11-16 22:50:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:50:57,908 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 [2024-11-16 22:50:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:57,910 INFO L225 Difference]: With dead ends: 804 [2024-11-16 22:50:57,910 INFO L226 Difference]: Without dead ends: 380 [2024-11-16 22:50:57,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:50:57,915 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 [2024-11-16 22:50:57,917 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] [2024-11-16 22:50:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-16 22:50:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-16 22:50:57,949 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) [2024-11-16 22:50:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 535 transitions. [2024-11-16 22:50:57,951 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 535 transitions. Word has length 161 [2024-11-16 22:50:57,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:57,953 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 535 transitions. [2024-11-16 22:50:57,953 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) [2024-11-16 22:50:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 535 transitions. [2024-11-16 22:50:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-16 22:50:57,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:57,956 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] [2024-11-16 22:50:57,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 22:50:57,957 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:57,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1544769521, now seen corresponding path program 1 times [2024-11-16 22:50:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:57,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793405146] [2024-11-16 22:50:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:57,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:50:58,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:58,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793405146] [2024-11-16 22:50:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793405146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:58,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:50:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 22:50:58,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15214548] [2024-11-16 22:50:58,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:58,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 22:50:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:58,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 22:50:58,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:50:58,172 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) [2024-11-16 22:50:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:58,290 INFO L93 Difference]: Finished difference Result 838 states and 1176 transitions. [2024-11-16 22:50:58,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 22:50:58,291 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 [2024-11-16 22:50:58,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:58,294 INFO L225 Difference]: With dead ends: 838 [2024-11-16 22:50:58,294 INFO L226 Difference]: Without dead ends: 462 [2024-11-16 22:50:58,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:50:58,298 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 [2024-11-16 22:50:58,299 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] [2024-11-16 22:50:58,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-16 22:50:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2024-11-16 22:50:58,314 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) [2024-11-16 22:50:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 644 transitions. [2024-11-16 22:50:58,317 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 644 transitions. Word has length 161 [2024-11-16 22:50:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:58,317 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 644 transitions. [2024-11-16 22:50:58,318 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) [2024-11-16 22:50:58,318 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 644 transitions. [2024-11-16 22:50:58,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-16 22:50:58,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:58,320 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] [2024-11-16 22:50:58,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 22:50:58,321 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:58,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash 535903126, now seen corresponding path program 1 times [2024-11-16 22:50:58,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:58,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890660405] [2024-11-16 22:50:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:58,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:58,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:50:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:58,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:50:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:50:58,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:58,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890660405] [2024-11-16 22:50:58,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890660405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:58,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:50:58,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:50:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923146228] [2024-11-16 22:50:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:58,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:50:58,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:50:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:50:58,787 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) [2024-11-16 22:50:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:59,302 INFO L93 Difference]: Finished difference Result 799 states and 1118 transitions. [2024-11-16 22:50:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:50:59,303 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 [2024-11-16 22:50:59,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:59,306 INFO L225 Difference]: With dead ends: 799 [2024-11-16 22:50:59,306 INFO L226 Difference]: Without dead ends: 423 [2024-11-16 22:50:59,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:50:59,310 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 [2024-11-16 22:50:59,311 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] [2024-11-16 22:50:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-16 22:50:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 420. [2024-11-16 22:50:59,361 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) [2024-11-16 22:50:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 567 transitions. [2024-11-16 22:50:59,363 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 567 transitions. Word has length 176 [2024-11-16 22:50:59,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:59,364 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 567 transitions. [2024-11-16 22:50:59,364 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) [2024-11-16 22:50:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 567 transitions. [2024-11-16 22:50:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-16 22:50:59,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:59,367 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] [2024-11-16 22:50:59,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 22:50:59,367 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:59,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:59,368 INFO L85 PathProgramCache]: Analyzing trace with hash 171407520, now seen corresponding path program 1 times [2024-11-16 22:50:59,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:59,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303726315] [2024-11-16 22:50:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:59,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:59,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:50:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:59,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:50:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:50:59,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:59,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303726315] [2024-11-16 22:50:59,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303726315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:59,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:50:59,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:50:59,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144414068] [2024-11-16 22:50:59,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:59,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:50:59,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:59,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:50:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:50:59,676 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) [2024-11-16 22:51:00,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:51:00,156 INFO L93 Difference]: Finished difference Result 751 states and 1024 transitions. [2024-11-16 22:51:00,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:51:00,157 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 [2024-11-16 22:51:00,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:51:00,159 INFO L225 Difference]: With dead ends: 751 [2024-11-16 22:51:00,159 INFO L226 Difference]: Without dead ends: 417 [2024-11-16 22:51:00,161 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 [2024-11-16 22:51:00,161 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:51:00,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1446 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:51:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-16 22:51:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 414. [2024-11-16 22:51:00,171 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) [2024-11-16 22:51:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 557 transitions. [2024-11-16 22:51:00,173 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 557 transitions. Word has length 176 [2024-11-16 22:51:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:51:00,174 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 557 transitions. [2024-11-16 22:51:00,174 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) [2024-11-16 22:51:00,175 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 557 transitions. [2024-11-16 22:51:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-16 22:51:00,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:51:00,177 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] [2024-11-16 22:51:00,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 22:51:00,177 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:51:00,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:51:00,178 INFO L85 PathProgramCache]: Analyzing trace with hash 635993628, now seen corresponding path program 1 times [2024-11-16 22:51:00,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:51:00,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057920037] [2024-11-16 22:51:00,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:51:00,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:51:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:00,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:51:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:00,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:51:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:51:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:51:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057920037] [2024-11-16 22:51:00,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057920037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:51:00,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:51:00,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:51:00,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596047939] [2024-11-16 22:51:00,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:51:00,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:51:00,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:51:00,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:51:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:51:00,554 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) [2024-11-16 22:51:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:51:01,246 INFO L93 Difference]: Finished difference Result 887 states and 1203 transitions. [2024-11-16 22:51:01,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:51:01,246 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 [2024-11-16 22:51:01,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:51:01,250 INFO L225 Difference]: With dead ends: 887 [2024-11-16 22:51:01,250 INFO L226 Difference]: Without dead ends: 559 [2024-11-16 22:51:01,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:51:01,251 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 168 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 22:51:01,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1112 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 22:51:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-16 22:51:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 556. [2024-11-16 22:51:01,266 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) [2024-11-16 22:51:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 746 transitions. [2024-11-16 22:51:01,268 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 746 transitions. Word has length 176 [2024-11-16 22:51:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:51:01,269 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 746 transitions. [2024-11-16 22:51:01,269 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) [2024-11-16 22:51:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 746 transitions. [2024-11-16 22:51:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-16 22:51:01,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:51:01,272 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] [2024-11-16 22:51:01,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 22:51:01,272 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:51:01,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:51:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash 850720363, now seen corresponding path program 1 times [2024-11-16 22:51:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:51:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388329841] [2024-11-16 22:51:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:51:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:51:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:01,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:51:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:01,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:51:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:01,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-16 22:51:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:01,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 22:51:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:51:01,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:51:01,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388329841] [2024-11-16 22:51:01,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388329841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:51:01,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845555159] [2024-11-16 22:51:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:51:01,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:51:01,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:51:01,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:51:01,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 22:51:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:02,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 22:51:02,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:51:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:51:02,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:51:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:51:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845555159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:51:02,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:51:02,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-16 22:51:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654828658] [2024-11-16 22:51:02,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:51:02,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 22:51:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:51:02,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 22:51:02,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:51:02,736 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) [2024-11-16 22:51:03,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:51:03,397 INFO L93 Difference]: Finished difference Result 1241 states and 1689 transitions. [2024-11-16 22:51:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 22:51:03,398 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 [2024-11-16 22:51:03,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:51:03,404 INFO L225 Difference]: With dead ends: 1241 [2024-11-16 22:51:03,404 INFO L226 Difference]: Without dead ends: 1210 [2024-11-16 22:51:03,405 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 [2024-11-16 22:51:03,405 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 1363 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:51:03,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 2444 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:51:03,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-16 22:51:03,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1207. [2024-11-16 22:51:03,430 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) [2024-11-16 22:51:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1609 transitions. [2024-11-16 22:51:03,435 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1609 transitions. Word has length 191 [2024-11-16 22:51:03,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:51:03,435 INFO L471 AbstractCegarLoop]: Abstraction has 1207 states and 1609 transitions. [2024-11-16 22:51:03,436 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) [2024-11-16 22:51:03,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1609 transitions. [2024-11-16 22:51:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-16 22:51:03,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:51:03,447 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] [2024-11-16 22:51:03,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 22:51:03,650 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 [2024-11-16 22:51:03,651 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:51:03,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:51:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1061139958, now seen corresponding path program 1 times [2024-11-16 22:51:03,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:51:03,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340640616] [2024-11-16 22:51:03,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:51:03,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:51:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:05,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:51:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:05,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:51:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:05,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-16 22:51:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:05,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 22:51:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:51:05,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:51:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340640616] [2024-11-16 22:51:05,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340640616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:51:05,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316081021] [2024-11-16 22:51:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:51:05,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:51:05,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:51:05,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:51:05,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 22:51:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:51:06,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 3126 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 22:51:06,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:51:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:51:07,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:51:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:51:08,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316081021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:51:08,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:51:08,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-16 22:51:08,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170411161] [2024-11-16 22:51:08,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:51:08,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 22:51:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:51:08,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 22:51:08,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-16 22:51:08,038 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) [2024-11-16 22:51:09,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:51:09,438 INFO L93 Difference]: Finished difference Result 2999 states and 4062 transitions. [2024-11-16 22:51:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 22:51:09,439 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 [2024-11-16 22:51:09,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:51:09,453 INFO L225 Difference]: With dead ends: 2999 [2024-11-16 22:51:09,454 INFO L226 Difference]: Without dead ends: 2968 [2024-11-16 22:51:09,456 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 [2024-11-16 22:51:09,457 INFO L432 NwaCegarLoop]: 575 mSDtfsCounter, 5312 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5416 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:51:09,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5416 Valid, 4533 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 22:51:09,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2024-11-16 22:51:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2965. [2024-11-16 22:51:09,522 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) [2024-11-16 22:51:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 3943 transitions. [2024-11-16 22:51:09,532 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 3943 transitions. Word has length 638 [2024-11-16 22:51:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:51:09,533 INFO L471 AbstractCegarLoop]: Abstraction has 2965 states and 3943 transitions. [2024-11-16 22:51:09,534 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) [2024-11-16 22:51:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 3943 transitions. [2024-11-16 22:51:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1533 [2024-11-16 22:51:09,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:51:09,594 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] [2024-11-16 22:51:09,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 22:51:09,795 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 [2024-11-16 22:51:09,796 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:51:09,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:51:09,796 INFO L85 PathProgramCache]: Analyzing trace with hash -991695382, now seen corresponding path program 2 times [2024-11-16 22:51:09,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:51:09,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822263563] [2024-11-16 22:51:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:51:09,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms