./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c -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 6ff1cedc7411bab7c4dff496b498f1be2a7af9e572a1448d390780005c75fec3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:37:52,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:37:52,376 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:37:52,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:37:52,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:37:52,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:37:52,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:37:52,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:37:52,402 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:37:52,403 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:37:52,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:37:52,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:37:52,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:37:52,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:37:52,405 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:37:52,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:37:52,406 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:37:52,406 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:37:52,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:37:52,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:37:52,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:37:52,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:37:52,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:37:52,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:37:52,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:37:52,413 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:37:52,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:37:52,413 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:37:52,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:37:52,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:37:52,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:37:52,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:37:52,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:52,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:37:52,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:37:52,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:37:52,418 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:37:52,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:37:52,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:37:52,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:37:52,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:37:52,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:37:52,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ff1cedc7411bab7c4dff496b498f1be2a7af9e572a1448d390780005c75fec3 [2024-11-18 14:37:52,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:37:52,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:37:52,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:37:52,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:37:52,717 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:37:52,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:54,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:37:54,358 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:37:54,360 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:54,374 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74a42c5ac/e031bf14e5334b73b38d8dfdbc42f6e8/FLAG7b3fa2c0e [2024-11-18 14:37:54,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74a42c5ac/e031bf14e5334b73b38d8dfdbc42f6e8 [2024-11-18 14:37:54,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:37:54,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:37:54,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:54,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:37:54,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:37:54,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d02d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54, skipping insertion in model container [2024-11-18 14:37:54,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,442 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:37:54,740 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/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c[12106,12119] [2024-11-18 14:37:54,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:54,756 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:37:54,827 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/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c[12106,12119] [2024-11-18 14:37:54,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:54,849 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:37:54,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54 WrapperNode [2024-11-18 14:37:54,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:54,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:54,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:37:54,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:37:54,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,907 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 421 [2024-11-18 14:37:54,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:54,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:37:54,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:37:54,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:37:54,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,946 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:37:54,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:37:54,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:37:54,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:37:54,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:37:54,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (1/1) ... [2024-11-18 14:37:54,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:54,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:55,014 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) [2024-11-18 14:37:55,020 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 [2024-11-18 14:37:55,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:37:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2024-11-18 14:37:55,069 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2024-11-18 14:37:55,069 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-18 14:37:55,069 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-18 14:37:55,069 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2024-11-18 14:37:55,070 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2024-11-18 14:37:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2024-11-18 14:37:55,071 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2024-11-18 14:37:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2024-11-18 14:37:55,072 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2024-11-18 14:37:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 14:37:55,072 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 14:37:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:37:55,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:37:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:37:55,205 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:37:55,207 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:37:55,877 INFO L? ?]: Removed 102 outVars from TransFormulas that were not future-live. [2024-11-18 14:37:55,877 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:37:55,897 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:37:55,898 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 14:37:55,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:55 BoogieIcfgContainer [2024-11-18 14:37:55,899 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:37:55,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:37:55,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:37:55,905 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:37:55,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:37:54" (1/3) ... [2024-11-18 14:37:55,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7512f22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:55, skipping insertion in model container [2024-11-18 14:37:55,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:54" (2/3) ... [2024-11-18 14:37:55,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7512f22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:55, skipping insertion in model container [2024-11-18 14:37:55,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:55" (3/3) ... [2024-11-18 14:37:55,909 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:55,924 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:37:55,924 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:37:55,994 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:37:56,000 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;@73c5c9f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:37:56,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:37:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 134 states have (on average 1.5895522388059702) internal successors, (213), 139 states have internal predecessors, (213), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-18 14:37:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 14:37:56,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:56,017 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:56,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:56,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:56,023 INFO L85 PathProgramCache]: Analyzing trace with hash -107767738, now seen corresponding path program 1 times [2024-11-18 14:37:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:56,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745285891] [2024-11-18 14:37:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:56,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:56,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745285891] [2024-11-18 14:37:56,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745285891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:56,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173872726] [2024-11-18 14:37:56,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:56,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:56,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:56,457 INFO L87 Difference]: Start difference. First operand has 179 states, 134 states have (on average 1.5895522388059702) internal successors, (213), 139 states have internal predecessors, (213), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:56,579 INFO L93 Difference]: Finished difference Result 357 states and 612 transitions. [2024-11-18 14:37:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:56,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-18 14:37:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:56,593 INFO L225 Difference]: With dead ends: 357 [2024-11-18 14:37:56,593 INFO L226 Difference]: Without dead ends: 181 [2024-11-18 14:37:56,598 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 [2024-11-18 14:37:56,601 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 7 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:56,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 809 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:56,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-18 14:37:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-18 14:37:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 136 states have (on average 1.5588235294117647) internal successors, (212), 140 states have internal predecessors, (212), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-18 14:37:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 286 transitions. [2024-11-18 14:37:56,654 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 286 transitions. Word has length 15 [2024-11-18 14:37:56,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:56,655 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 286 transitions. [2024-11-18 14:37:56,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 286 transitions. [2024-11-18 14:37:56,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 14:37:56,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:56,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:56,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:37:56,658 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:56,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:56,659 INFO L85 PathProgramCache]: Analyzing trace with hash -415563581, now seen corresponding path program 1 times [2024-11-18 14:37:56,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:56,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913467032] [2024-11-18 14:37:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:56,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:56,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:56,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913467032] [2024-11-18 14:37:56,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913467032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:56,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:56,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:56,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786884430] [2024-11-18 14:37:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:56,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:56,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:56,771 INFO L87 Difference]: Start difference. First operand 181 states and 286 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:56,868 INFO L93 Difference]: Finished difference Result 375 states and 595 transitions. [2024-11-18 14:37:56,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:56,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-18 14:37:56,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:56,892 INFO L225 Difference]: With dead ends: 375 [2024-11-18 14:37:56,892 INFO L226 Difference]: Without dead ends: 197 [2024-11-18 14:37:56,896 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 [2024-11-18 14:37:56,897 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 25 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:56,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 825 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-18 14:37:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 194. [2024-11-18 14:37:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 147 states have (on average 1.5374149659863945) internal successors, (226), 151 states have internal predecessors, (226), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:37:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 302 transitions. [2024-11-18 14:37:56,923 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 302 transitions. Word has length 16 [2024-11-18 14:37:56,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:56,923 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 302 transitions. [2024-11-18 14:37:56,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:56,924 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 302 transitions. [2024-11-18 14:37:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 14:37:56,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:56,926 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] [2024-11-18 14:37:56,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:37:56,926 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:56,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash 411459519, now seen corresponding path program 1 times [2024-11-18 14:37:56,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:56,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977737402] [2024-11-18 14:37:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:56,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:57,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:57,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977737402] [2024-11-18 14:37:57,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977737402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:57,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:57,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:57,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551598346] [2024-11-18 14:37:57,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:57,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:57,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:57,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:57,044 INFO L87 Difference]: Start difference. First operand 194 states and 302 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:57,079 INFO L93 Difference]: Finished difference Result 407 states and 641 transitions. [2024-11-18 14:37:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:57,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-18 14:37:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:57,084 INFO L225 Difference]: With dead ends: 407 [2024-11-18 14:37:57,086 INFO L226 Difference]: Without dead ends: 223 [2024-11-18 14:37:57,087 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 [2024-11-18 14:37:57,088 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 22 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:57,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 558 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-18 14:37:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 196. [2024-11-18 14:37:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 149 states have (on average 1.5302013422818792) internal successors, (228), 153 states have internal predecessors, (228), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:37:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 304 transitions. [2024-11-18 14:37:57,109 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 304 transitions. Word has length 24 [2024-11-18 14:37:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:57,110 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 304 transitions. [2024-11-18 14:37:57,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 304 transitions. [2024-11-18 14:37:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 14:37:57,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:57,112 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:37:57,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:37:57,112 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:57,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash 488098158, now seen corresponding path program 1 times [2024-11-18 14:37:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883719300] [2024-11-18 14:37:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:57,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:57,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883719300] [2024-11-18 14:37:57,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883719300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:57,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:57,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958799059] [2024-11-18 14:37:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:57,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:57,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:57,262 INFO L87 Difference]: Start difference. First operand 196 states and 304 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:57,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:57,321 INFO L93 Difference]: Finished difference Result 382 states and 597 transitions. [2024-11-18 14:37:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:57,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-18 14:37:57,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:57,326 INFO L225 Difference]: With dead ends: 382 [2024-11-18 14:37:57,327 INFO L226 Difference]: Without dead ends: 202 [2024-11-18 14:37:57,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:57,330 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 0 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:57,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1102 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:57,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-18 14:37:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2024-11-18 14:37:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 152 states have (on average 1.519736842105263) internal successors, (231), 156 states have internal predecessors, (231), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2024-11-18 14:37:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 308 transitions. [2024-11-18 14:37:57,365 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 308 transitions. Word has length 32 [2024-11-18 14:37:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:57,365 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 308 transitions. [2024-11-18 14:37:57,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 308 transitions. [2024-11-18 14:37:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 14:37:57,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:57,371 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:57,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:37:57,371 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:57,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:57,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1989928926, now seen corresponding path program 1 times [2024-11-18 14:37:57,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:57,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197275329] [2024-11-18 14:37:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:57,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:57,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:57,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197275329] [2024-11-18 14:37:57,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197275329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:57,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:57,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:57,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960246397] [2024-11-18 14:37:57,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:57,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:57,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:57,522 INFO L87 Difference]: Start difference. First operand 200 states and 308 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 14:37:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:57,605 INFO L93 Difference]: Finished difference Result 345 states and 538 transitions. [2024-11-18 14:37:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:37:57,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-18 14:37:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:57,610 INFO L225 Difference]: With dead ends: 345 [2024-11-18 14:37:57,610 INFO L226 Difference]: Without dead ends: 196 [2024-11-18 14:37:57,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:57,612 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:57,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1340 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-18 14:37:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2024-11-18 14:37:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 149 states have (on average 1.4966442953020134) internal successors, (223), 153 states have internal predecessors, (223), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:37:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 299 transitions. [2024-11-18 14:37:57,623 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 299 transitions. Word has length 35 [2024-11-18 14:37:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:57,624 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 299 transitions. [2024-11-18 14:37:57,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 14:37:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 299 transitions. [2024-11-18 14:37:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 14:37:57,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:57,625 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:37:57,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:37:57,626 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:57,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash -580786706, now seen corresponding path program 1 times [2024-11-18 14:37:57,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:57,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436079176] [2024-11-18 14:37:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:57,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:57,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:57,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436079176] [2024-11-18 14:37:57,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436079176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:57,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568187900] [2024-11-18 14:37:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:57,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:57,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:57,707 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) [2024-11-18 14:37:57,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:37:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:57,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:57,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:57,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568187900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:57,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:57,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 14:37:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036343055] [2024-11-18 14:37:57,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:57,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:57,933 INFO L87 Difference]: Start difference. First operand 196 states and 299 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 14:37:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:57,985 INFO L93 Difference]: Finished difference Result 440 states and 685 transitions. [2024-11-18 14:37:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:57,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-18 14:37:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:57,989 INFO L225 Difference]: With dead ends: 440 [2024-11-18 14:37:57,989 INFO L226 Difference]: Without dead ends: 255 [2024-11-18 14:37:57,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:57,991 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 58 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:57,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1092 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-18 14:37:58,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2024-11-18 14:37:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 192 states have (on average 1.46875) internal successors, (282), 196 states have internal predecessors, (282), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 14:37:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 378 transitions. [2024-11-18 14:37:58,028 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 378 transitions. Word has length 35 [2024-11-18 14:37:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:58,028 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 378 transitions. [2024-11-18 14:37:58,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 14:37:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 378 transitions. [2024-11-18 14:37:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:58,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:58,030 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:58,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:37:58,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 14:37:58,231 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:58,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash -339598002, now seen corresponding path program 2 times [2024-11-18 14:37:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:58,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758567112] [2024-11-18 14:37:58,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:37:58,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:58,253 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:37:58,254 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:37:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-18 14:37:58,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:58,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758567112] [2024-11-18 14:37:58,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758567112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:58,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:58,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:58,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894733429] [2024-11-18 14:37:58,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:58,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:58,293 INFO L87 Difference]: Start difference. First operand 249 states and 378 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:58,346 INFO L93 Difference]: Finished difference Result 476 states and 740 transitions. [2024-11-18 14:37:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:58,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-18 14:37:58,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:58,351 INFO L225 Difference]: With dead ends: 476 [2024-11-18 14:37:58,351 INFO L226 Difference]: Without dead ends: 256 [2024-11-18 14:37:58,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:58,353 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 8 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:58,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 799 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-18 14:37:58,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-18 14:37:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 198 states have (on average 1.4646464646464648) internal successors, (290), 202 states have internal predecessors, (290), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 14:37:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 386 transitions. [2024-11-18 14:37:58,373 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 386 transitions. Word has length 57 [2024-11-18 14:37:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:58,374 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 386 transitions. [2024-11-18 14:37:58,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 386 transitions. [2024-11-18 14:37:58,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:58,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:58,376 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:58,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:37:58,376 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:58,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:58,377 INFO L85 PathProgramCache]: Analyzing trace with hash -286908003, now seen corresponding path program 1 times [2024-11-18 14:37:58,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:58,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996142678] [2024-11-18 14:37:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:58,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:37:58,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:58,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996142678] [2024-11-18 14:37:58,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996142678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:58,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:58,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029013487] [2024-11-18 14:37:58,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:58,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:58,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:58,455 INFO L87 Difference]: Start difference. First operand 256 states and 386 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:58,500 INFO L93 Difference]: Finished difference Result 522 states and 798 transitions. [2024-11-18 14:37:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:58,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-18 14:37:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:58,504 INFO L225 Difference]: With dead ends: 522 [2024-11-18 14:37:58,504 INFO L226 Difference]: Without dead ends: 295 [2024-11-18 14:37:58,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:58,506 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 24 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:58,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 817 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-18 14:37:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 292. [2024-11-18 14:37:58,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 230 states have (on average 1.4217391304347826) internal successors, (327), 234 states have internal predecessors, (327), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 14:37:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 429 transitions. [2024-11-18 14:37:58,528 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 429 transitions. Word has length 57 [2024-11-18 14:37:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:58,528 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 429 transitions. [2024-11-18 14:37:58,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 429 transitions. [2024-11-18 14:37:58,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:37:58,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:58,532 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:58,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:37:58,532 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:58,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1978052109, now seen corresponding path program 1 times [2024-11-18 14:37:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:58,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789450022] [2024-11-18 14:37:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:58,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:58,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:58,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789450022] [2024-11-18 14:37:58,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789450022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:58,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:58,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726716945] [2024-11-18 14:37:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:58,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:58,658 INFO L87 Difference]: Start difference. First operand 292 states and 429 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:58,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:58,687 INFO L93 Difference]: Finished difference Result 533 states and 797 transitions. [2024-11-18 14:37:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:58,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2024-11-18 14:37:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:58,690 INFO L225 Difference]: With dead ends: 533 [2024-11-18 14:37:58,691 INFO L226 Difference]: Without dead ends: 294 [2024-11-18 14:37:58,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:58,692 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:58,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1089 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-18 14:37:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2024-11-18 14:37:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 230 states have (on average 1.4086956521739131) internal successors, (324), 234 states have internal predecessors, (324), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 14:37:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 426 transitions. [2024-11-18 14:37:58,708 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 426 transitions. Word has length 75 [2024-11-18 14:37:58,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:58,709 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 426 transitions. [2024-11-18 14:37:58,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 426 transitions. [2024-11-18 14:37:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:58,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:58,710 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:58,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:37:58,711 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:58,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1751572537, now seen corresponding path program 1 times [2024-11-18 14:37:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:58,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788135228] [2024-11-18 14:37:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:58,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-18 14:37:58,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:58,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788135228] [2024-11-18 14:37:58,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788135228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:58,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:58,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:58,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472732138] [2024-11-18 14:37:58,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:58,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:58,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:58,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:58,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:58,834 INFO L87 Difference]: Start difference. First operand 292 states and 426 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:58,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:58,899 INFO L93 Difference]: Finished difference Result 570 states and 853 transitions. [2024-11-18 14:37:58,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:58,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2024-11-18 14:37:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:58,902 INFO L225 Difference]: With dead ends: 570 [2024-11-18 14:37:58,902 INFO L226 Difference]: Without dead ends: 336 [2024-11-18 14:37:58,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:58,904 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 25 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:58,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 817 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-18 14:37:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 333. [2024-11-18 14:37:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 267 states have (on average 1.3707865168539326) internal successors, (366), 271 states have internal predecessors, (366), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 14:37:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 474 transitions. [2024-11-18 14:37:58,920 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 474 transitions. Word has length 104 [2024-11-18 14:37:58,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:58,921 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 474 transitions. [2024-11-18 14:37:58,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 474 transitions. [2024-11-18 14:37:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 14:37:58,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:58,922 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:58,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:37:58,922 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:58,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:58,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1739109354, now seen corresponding path program 1 times [2024-11-18 14:37:58,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:58,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303099690] [2024-11-18 14:37:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:58,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-18 14:37:59,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:59,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303099690] [2024-11-18 14:37:59,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303099690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:59,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:59,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:59,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774601477] [2024-11-18 14:37:59,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:59,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:59,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:59,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:59,008 INFO L87 Difference]: Start difference. First operand 333 states and 474 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:59,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:59,053 INFO L93 Difference]: Finished difference Result 596 states and 873 transitions. [2024-11-18 14:37:59,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:59,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2024-11-18 14:37:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:59,057 INFO L225 Difference]: With dead ends: 596 [2024-11-18 14:37:59,057 INFO L226 Difference]: Without dead ends: 327 [2024-11-18 14:37:59,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:59,059 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 9 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:59,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 782 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-18 14:37:59,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2024-11-18 14:37:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 262 states have (on average 1.3511450381679388) internal successors, (354), 266 states have internal predecessors, (354), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-18 14:37:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 460 transitions. [2024-11-18 14:37:59,074 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 460 transitions. Word has length 105 [2024-11-18 14:37:59,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:59,074 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 460 transitions. [2024-11-18 14:37:59,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 460 transitions. [2024-11-18 14:37:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 14:37:59,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:59,076 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:59,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:37:59,076 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:59,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:59,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2025790761, now seen corresponding path program 1 times [2024-11-18 14:37:59,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:59,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503071481] [2024-11-18 14:37:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-18 14:37:59,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:59,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503071481] [2024-11-18 14:37:59,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503071481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:59,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:59,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:59,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614649730] [2024-11-18 14:37:59,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:59,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:59,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:59,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:59,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:59,184 INFO L87 Difference]: Start difference. First operand 327 states and 460 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:59,218 INFO L93 Difference]: Finished difference Result 571 states and 822 transitions. [2024-11-18 14:37:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:59,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2024-11-18 14:37:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:59,222 INFO L225 Difference]: With dead ends: 571 [2024-11-18 14:37:59,222 INFO L226 Difference]: Without dead ends: 329 [2024-11-18 14:37:59,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:59,223 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:59,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1073 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-18 14:37:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2024-11-18 14:37:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 262 states have (on average 1.3396946564885497) internal successors, (351), 266 states have internal predecessors, (351), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-18 14:37:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 457 transitions. [2024-11-18 14:37:59,240 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 457 transitions. Word has length 124 [2024-11-18 14:37:59,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:59,240 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 457 transitions. [2024-11-18 14:37:59,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 457 transitions. [2024-11-18 14:37:59,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 14:37:59,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:59,244 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:59,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:37:59,244 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:59,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:59,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1066526319, now seen corresponding path program 1 times [2024-11-18 14:37:59,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:59,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481608485] [2024-11-18 14:37:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:59,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2024-11-18 14:37:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481608485] [2024-11-18 14:37:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481608485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:59,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:59,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:59,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125254387] [2024-11-18 14:37:59,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:59,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:59,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:59,395 INFO L87 Difference]: Start difference. First operand 327 states and 457 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:59,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:59,447 INFO L93 Difference]: Finished difference Result 534 states and 782 transitions. [2024-11-18 14:37:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:59,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2024-11-18 14:37:59,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:59,450 INFO L225 Difference]: With dead ends: 534 [2024-11-18 14:37:59,450 INFO L226 Difference]: Without dead ends: 325 [2024-11-18 14:37:59,451 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 [2024-11-18 14:37:59,452 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 7 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:59,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 750 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:59,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-18 14:37:59,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2024-11-18 14:37:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 261 states have (on average 1.3371647509578544) internal successors, (349), 265 states have internal predecessors, (349), 52 states have call successors, (52), 11 states have call predecessors, (52), 11 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 14:37:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 453 transitions. [2024-11-18 14:37:59,465 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 453 transitions. Word has length 157 [2024-11-18 14:37:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:59,466 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 453 transitions. [2024-11-18 14:37:59,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:59,466 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 453 transitions. [2024-11-18 14:37:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 14:37:59,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:59,468 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2024-11-18 14:37:59,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:37:59,468 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:59,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:59,469 INFO L85 PathProgramCache]: Analyzing trace with hash 361836827, now seen corresponding path program 1 times [2024-11-18 14:37:59,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:59,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180742453] [2024-11-18 14:37:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:59,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-18 14:37:59,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:59,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180742453] [2024-11-18 14:37:59,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180742453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:59,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:59,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:59,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864035835] [2024-11-18 14:37:59,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:59,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:59,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:59,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:59,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:59,608 INFO L87 Difference]: Start difference. First operand 325 states and 453 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:59,662 INFO L93 Difference]: Finished difference Result 474 states and 678 transitions. [2024-11-18 14:37:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 176 [2024-11-18 14:37:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:59,665 INFO L225 Difference]: With dead ends: 474 [2024-11-18 14:37:59,665 INFO L226 Difference]: Without dead ends: 308 [2024-11-18 14:37:59,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:59,667 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 35 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:59,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 726 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-18 14:37:59,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2024-11-18 14:37:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 247 states have (on average 1.3279352226720649) internal successors, (328), 251 states have internal predecessors, (328), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-18 14:37:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 426 transitions. [2024-11-18 14:37:59,680 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 426 transitions. Word has length 176 [2024-11-18 14:37:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:59,681 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 426 transitions. [2024-11-18 14:37:59,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 426 transitions. [2024-11-18 14:37:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 14:37:59,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:59,683 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2024-11-18 14:37:59,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:37:59,684 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:59,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash 858060976, now seen corresponding path program 1 times [2024-11-18 14:37:59,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110886904] [2024-11-18 14:37:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:59,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2024-11-18 14:37:59,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:59,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110886904] [2024-11-18 14:37:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110886904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:59,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:59,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871043734] [2024-11-18 14:37:59,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:59,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:59,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:59,871 INFO L87 Difference]: Start difference. First operand 308 states and 426 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:59,937 INFO L93 Difference]: Finished difference Result 457 states and 651 transitions. [2024-11-18 14:37:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:59,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 178 [2024-11-18 14:37:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:59,940 INFO L225 Difference]: With dead ends: 457 [2024-11-18 14:37:59,940 INFO L226 Difference]: Without dead ends: 289 [2024-11-18 14:37:59,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:59,943 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 30 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:59,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 730 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-18 14:37:59,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-18 14:37:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 231 states have (on average 1.3203463203463204) internal successors, (305), 235 states have internal predecessors, (305), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 14:37:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 397 transitions. [2024-11-18 14:37:59,960 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 397 transitions. Word has length 178 [2024-11-18 14:37:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:59,961 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 397 transitions. [2024-11-18 14:37:59,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 397 transitions. [2024-11-18 14:37:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 14:37:59,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:59,963 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:59,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:37:59,964 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:59,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1007699281, now seen corresponding path program 1 times [2024-11-18 14:37:59,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:59,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426482983] [2024-11-18 14:37:59,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:59,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2024-11-18 14:38:00,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:00,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426482983] [2024-11-18 14:38:00,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426482983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:00,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:00,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:38:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28366956] [2024-11-18 14:38:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:00,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:38:00,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:38:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:00,102 INFO L87 Difference]: Start difference. First operand 289 states and 397 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 14:38:00,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:00,127 INFO L93 Difference]: Finished difference Result 437 states and 621 transitions. [2024-11-18 14:38:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:00,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 179 [2024-11-18 14:38:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:00,129 INFO L225 Difference]: With dead ends: 437 [2024-11-18 14:38:00,129 INFO L226 Difference]: Without dead ends: 289 [2024-11-18 14:38:00,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:00,130 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:00,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1051 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:00,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-18 14:38:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-18 14:38:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 231 states have (on average 1.2943722943722944) internal successors, (299), 235 states have internal predecessors, (299), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 14:38:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 391 transitions. [2024-11-18 14:38:00,142 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 391 transitions. Word has length 179 [2024-11-18 14:38:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:00,143 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 391 transitions. [2024-11-18 14:38:00,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 14:38:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 391 transitions. [2024-11-18 14:38:00,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-18 14:38:00,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:00,145 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:00,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:38:00,145 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:00,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:00,146 INFO L85 PathProgramCache]: Analyzing trace with hash -194963710, now seen corresponding path program 1 times [2024-11-18 14:38:00,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:00,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263837134] [2024-11-18 14:38:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 14:38:00,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:00,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263837134] [2024-11-18 14:38:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263837134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:00,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878498429] [2024-11-18 14:38:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:00,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:00,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:00,265 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) [2024-11-18 14:38:00,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:38:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:00,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:38:00,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 14:38:00,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 14:38:00,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878498429] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:00,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:38:00,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2024-11-18 14:38:00,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997704517] [2024-11-18 14:38:00,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:00,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:00,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:00,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:00,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:00,658 INFO L87 Difference]: Start difference. First operand 289 states and 391 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:38:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:00,703 INFO L93 Difference]: Finished difference Result 458 states and 643 transitions. [2024-11-18 14:38:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:38:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 186 [2024-11-18 14:38:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:00,706 INFO L225 Difference]: With dead ends: 458 [2024-11-18 14:38:00,706 INFO L226 Difference]: Without dead ends: 268 [2024-11-18 14:38:00,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:00,707 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 30 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:00,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 499 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-18 14:38:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-18 14:38:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 213 states have (on average 1.2863849765258215) internal successors, (274), 217 states have internal predecessors, (274), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 14:38:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 360 transitions. [2024-11-18 14:38:00,721 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 360 transitions. Word has length 186 [2024-11-18 14:38:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:00,721 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 360 transitions. [2024-11-18 14:38:00,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:38:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 360 transitions. [2024-11-18 14:38:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-18 14:38:00,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:00,724 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:00,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:38:00,927 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,SelfDestructingSolverStorable16 [2024-11-18 14:38:00,928 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:00,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1374831435, now seen corresponding path program 1 times [2024-11-18 14:38:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537299077] [2024-11-18 14:38:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:00,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2024-11-18 14:38:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:01,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537299077] [2024-11-18 14:38:01,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537299077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:01,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:01,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:38:01,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874714049] [2024-11-18 14:38:01,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:01,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:01,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:01,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:01,057 INFO L87 Difference]: Start difference. First operand 268 states and 360 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-18 14:38:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:01,088 INFO L93 Difference]: Finished difference Result 413 states and 581 transitions. [2024-11-18 14:38:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:38:01,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 210 [2024-11-18 14:38:01,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:01,091 INFO L225 Difference]: With dead ends: 413 [2024-11-18 14:38:01,091 INFO L226 Difference]: Without dead ends: 272 [2024-11-18 14:38:01,092 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 [2024-11-18 14:38:01,092 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 3 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:01,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 770 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:01,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-18 14:38:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-18 14:38:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 216 states have (on average 1.2824074074074074) internal successors, (277), 220 states have internal predecessors, (277), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 14:38:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 363 transitions. [2024-11-18 14:38:01,108 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 363 transitions. Word has length 210 [2024-11-18 14:38:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:01,109 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 363 transitions. [2024-11-18 14:38:01,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-18 14:38:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 363 transitions. [2024-11-18 14:38:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 14:38:01,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:01,111 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:01,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:38:01,112 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:01,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1760989206, now seen corresponding path program 1 times [2024-11-18 14:38:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:01,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358825226] [2024-11-18 14:38:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2024-11-18 14:38:01,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358825226] [2024-11-18 14:38:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358825226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:01,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:01,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:38:01,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943900355] [2024-11-18 14:38:01,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:01,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:01,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:01,246 INFO L87 Difference]: Start difference. First operand 272 states and 363 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:38:01,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:01,280 INFO L93 Difference]: Finished difference Result 422 states and 589 transitions. [2024-11-18 14:38:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:38:01,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 217 [2024-11-18 14:38:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:01,283 INFO L225 Difference]: With dead ends: 422 [2024-11-18 14:38:01,283 INFO L226 Difference]: Without dead ends: 277 [2024-11-18 14:38:01,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:01,284 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 4 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:01,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 772 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-18 14:38:01,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2024-11-18 14:38:01,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 220 states have (on average 1.2772727272727273) internal successors, (281), 224 states have internal predecessors, (281), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 14:38:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 367 transitions. [2024-11-18 14:38:01,297 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 367 transitions. Word has length 217 [2024-11-18 14:38:01,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:01,298 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 367 transitions. [2024-11-18 14:38:01,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:38:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 367 transitions. [2024-11-18 14:38:01,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 14:38:01,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:01,301 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:01,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:38:01,301 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:01,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:01,301 INFO L85 PathProgramCache]: Analyzing trace with hash 155068678, now seen corresponding path program 1 times [2024-11-18 14:38:01,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:01,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525642224] [2024-11-18 14:38:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:01,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2024-11-18 14:38:01,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525642224] [2024-11-18 14:38:01,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525642224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:01,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:01,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:38:01,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974162455] [2024-11-18 14:38:01,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:01,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:01,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:01,463 INFO L87 Difference]: Start difference. First operand 277 states and 367 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 14:38:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:01,500 INFO L93 Difference]: Finished difference Result 426 states and 589 transitions. [2024-11-18 14:38:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:38:01,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 225 [2024-11-18 14:38:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:01,503 INFO L225 Difference]: With dead ends: 426 [2024-11-18 14:38:01,503 INFO L226 Difference]: Without dead ends: 276 [2024-11-18 14:38:01,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:01,504 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 5 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:01,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 762 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:01,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-18 14:38:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-11-18 14:38:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 220 states have (on average 1.2636363636363637) internal successors, (278), 223 states have internal predecessors, (278), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 14:38:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 362 transitions. [2024-11-18 14:38:01,518 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 362 transitions. Word has length 225 [2024-11-18 14:38:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:01,518 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 362 transitions. [2024-11-18 14:38:01,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 14:38:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 362 transitions. [2024-11-18 14:38:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-18 14:38:01,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:01,521 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:01,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:38:01,521 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:01,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash -201325626, now seen corresponding path program 1 times [2024-11-18 14:38:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:01,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669582006] [2024-11-18 14:38:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2024-11-18 14:38:01,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:01,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669582006] [2024-11-18 14:38:01,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669582006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:01,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:01,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:38:01,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645065696] [2024-11-18 14:38:01,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:01,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:38:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:38:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:38:01,661 INFO L87 Difference]: Start difference. First operand 276 states and 362 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 14:38:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:01,677 INFO L93 Difference]: Finished difference Result 424 states and 578 transitions. [2024-11-18 14:38:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:38:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 233 [2024-11-18 14:38:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:01,680 INFO L225 Difference]: With dead ends: 424 [2024-11-18 14:38:01,680 INFO L226 Difference]: Without dead ends: 275 [2024-11-18 14:38:01,681 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 [2024-11-18 14:38:01,681 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:01,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 508 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-18 14:38:01,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2024-11-18 14:38:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 220 states have (on average 1.259090909090909) internal successors, (277), 222 states have internal predecessors, (277), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-18 14:38:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 359 transitions. [2024-11-18 14:38:01,697 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 359 transitions. Word has length 233 [2024-11-18 14:38:01,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:01,697 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 359 transitions. [2024-11-18 14:38:01,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 14:38:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 359 transitions. [2024-11-18 14:38:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-18 14:38:01,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:01,700 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:01,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:38:01,700 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:01,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:01,701 INFO L85 PathProgramCache]: Analyzing trace with hash -861189707, now seen corresponding path program 1 times [2024-11-18 14:38:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:01,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883718331] [2024-11-18 14:38:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:01,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2024-11-18 14:38:01,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:01,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883718331] [2024-11-18 14:38:01,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883718331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:01,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:01,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:38:01,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089131608] [2024-11-18 14:38:01,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:01,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:01,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:01,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:01,971 INFO L87 Difference]: Start difference. First operand 275 states and 359 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:38:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:02,056 INFO L93 Difference]: Finished difference Result 636 states and 859 transitions. [2024-11-18 14:38:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:02,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 235 [2024-11-18 14:38:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:02,060 INFO L225 Difference]: With dead ends: 636 [2024-11-18 14:38:02,060 INFO L226 Difference]: Without dead ends: 488 [2024-11-18 14:38:02,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:02,062 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 330 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:02,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 721 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:38:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-11-18 14:38:02,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 482. [2024-11-18 14:38:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 380 states have (on average 1.3105263157894738) internal successors, (498), 382 states have internal predecessors, (498), 70 states have call successors, (70), 31 states have call predecessors, (70), 31 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 14:38:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 638 transitions. [2024-11-18 14:38:02,085 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 638 transitions. Word has length 235 [2024-11-18 14:38:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:02,085 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 638 transitions. [2024-11-18 14:38:02,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:38:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 638 transitions. [2024-11-18 14:38:02,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-18 14:38:02,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:02,089 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:02,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:38:02,089 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:02,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1829748786, now seen corresponding path program 1 times [2024-11-18 14:38:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199147007] [2024-11-18 14:38:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:02,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-18 14:38:02,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199147007] [2024-11-18 14:38:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199147007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:02,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:02,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:38:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948337018] [2024-11-18 14:38:02,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:02,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:38:02,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:38:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:38:02,243 INFO L87 Difference]: Start difference. First operand 482 states and 638 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:38:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:02,292 INFO L93 Difference]: Finished difference Result 1055 states and 1448 transitions. [2024-11-18 14:38:02,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:38:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 267 [2024-11-18 14:38:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:02,298 INFO L225 Difference]: With dead ends: 1055 [2024-11-18 14:38:02,298 INFO L226 Difference]: Without dead ends: 772 [2024-11-18 14:38:02,299 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 [2024-11-18 14:38:02,300 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 176 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:02,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 531 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-18 14:38:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 603. [2024-11-18 14:38:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 476 states have (on average 1.319327731092437) internal successors, (628), 482 states have internal predecessors, (628), 85 states have call successors, (85), 41 states have call predecessors, (85), 41 states have return successors, (85), 81 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-18 14:38:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 798 transitions. [2024-11-18 14:38:02,335 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 798 transitions. Word has length 267 [2024-11-18 14:38:02,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:02,336 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 798 transitions. [2024-11-18 14:38:02,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:38:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 798 transitions. [2024-11-18 14:38:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-18 14:38:02,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:02,340 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:02,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:38:02,340 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:02,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:02,340 INFO L85 PathProgramCache]: Analyzing trace with hash 764579000, now seen corresponding path program 1 times [2024-11-18 14:38:02,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:02,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556691079] [2024-11-18 14:38:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:02,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-18 14:38:02,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:02,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556691079] [2024-11-18 14:38:02,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556691079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:02,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:02,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:38:02,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464772183] [2024-11-18 14:38:02,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:02,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:38:02,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:38:02,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:38:02,500 INFO L87 Difference]: Start difference. First operand 603 states and 798 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:38:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:02,575 INFO L93 Difference]: Finished difference Result 1335 states and 1818 transitions. [2024-11-18 14:38:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:38:02,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 268 [2024-11-18 14:38:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:02,581 INFO L225 Difference]: With dead ends: 1335 [2024-11-18 14:38:02,582 INFO L226 Difference]: Without dead ends: 964 [2024-11-18 14:38:02,583 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 [2024-11-18 14:38:02,584 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 178 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:02,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 549 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-11-18 14:38:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 956. [2024-11-18 14:38:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 749 states have (on average 1.3471295060080106) internal successors, (1009), 763 states have internal predecessors, (1009), 139 states have call successors, (139), 67 states have call predecessors, (139), 67 states have return successors, (139), 129 states have call predecessors, (139), 139 states have call successors, (139) [2024-11-18 14:38:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1287 transitions. [2024-11-18 14:38:02,638 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1287 transitions. Word has length 268 [2024-11-18 14:38:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:02,640 INFO L471 AbstractCegarLoop]: Abstraction has 956 states and 1287 transitions. [2024-11-18 14:38:02,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:38:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1287 transitions. [2024-11-18 14:38:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 14:38:02,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:02,643 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:02,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 14:38:02,644 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:02,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1029346611, now seen corresponding path program 1 times [2024-11-18 14:38:02,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:02,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290048625] [2024-11-18 14:38:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:02,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-18 14:38:02,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290048625] [2024-11-18 14:38:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290048625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:02,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:02,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:38:02,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194798908] [2024-11-18 14:38:02,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:02,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:38:02,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:02,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:38:02,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:38:02,770 INFO L87 Difference]: Start difference. First operand 956 states and 1287 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:38:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:02,870 INFO L93 Difference]: Finished difference Result 2232 states and 3081 transitions. [2024-11-18 14:38:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:38:02,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 269 [2024-11-18 14:38:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:02,880 INFO L225 Difference]: With dead ends: 2232 [2024-11-18 14:38:02,880 INFO L226 Difference]: Without dead ends: 1548 [2024-11-18 14:38:02,883 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 [2024-11-18 14:38:02,883 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 179 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:02,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 566 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2024-11-18 14:38:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1534. [2024-11-18 14:38:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1195 states have (on average 1.3732217573221757) internal successors, (1641), 1223 states have internal predecessors, (1641), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-18 14:38:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2103 transitions. [2024-11-18 14:38:03,021 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2103 transitions. Word has length 269 [2024-11-18 14:38:03,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:03,021 INFO L471 AbstractCegarLoop]: Abstraction has 1534 states and 2103 transitions. [2024-11-18 14:38:03,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:38:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2103 transitions. [2024-11-18 14:38:03,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 14:38:03,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:03,025 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:03,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 14:38:03,026 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:03,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:03,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1423713397, now seen corresponding path program 1 times [2024-11-18 14:38:03,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:03,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013567324] [2024-11-18 14:38:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2024-11-18 14:38:03,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:03,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013567324] [2024-11-18 14:38:03,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013567324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:03,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292584964] [2024-11-18 14:38:03,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:03,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:03,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:03,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:03,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:38:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:03,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:38:03,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-18 14:38:03,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:38:03,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292584964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:03,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:38:03,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 14:38:03,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221679107] [2024-11-18 14:38:03,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:03,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:03,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:38:03,598 INFO L87 Difference]: Start difference. First operand 1534 states and 2103 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:38:03,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:03,761 INFO L93 Difference]: Finished difference Result 2836 states and 3946 transitions. [2024-11-18 14:38:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:03,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 269 [2024-11-18 14:38:03,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:03,772 INFO L225 Difference]: With dead ends: 2836 [2024-11-18 14:38:03,773 INFO L226 Difference]: Without dead ends: 1534 [2024-11-18 14:38:03,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:38:03,778 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 31 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:03,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 697 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:38:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2024-11-18 14:38:03,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1534. [2024-11-18 14:38:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1195 states have (on average 1.3531380753138076) internal successors, (1617), 1223 states have internal predecessors, (1617), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-18 14:38:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2079 transitions. [2024-11-18 14:38:03,912 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2079 transitions. Word has length 269 [2024-11-18 14:38:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:03,912 INFO L471 AbstractCegarLoop]: Abstraction has 1534 states and 2079 transitions. [2024-11-18 14:38:03,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:38:03,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2079 transitions. [2024-11-18 14:38:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 14:38:03,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:03,919 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:03,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:38:04,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:04,120 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:04,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1511978298, now seen corresponding path program 1 times [2024-11-18 14:38:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:04,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201495139] [2024-11-18 14:38:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2024-11-18 14:38:04,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:04,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201495139] [2024-11-18 14:38:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201495139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310571172] [2024-11-18 14:38:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:04,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:04,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:04,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:04,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:38:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:04,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:38:04,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-11-18 14:38:04,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:38:04,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310571172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:04,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:38:04,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 14:38:04,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434904330] [2024-11-18 14:38:04,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:04,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:04,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:04,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:38:04,636 INFO L87 Difference]: Start difference. First operand 1534 states and 2079 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:38:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:04,799 INFO L93 Difference]: Finished difference Result 2836 states and 3890 transitions. [2024-11-18 14:38:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 270 [2024-11-18 14:38:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:04,810 INFO L225 Difference]: With dead ends: 2836 [2024-11-18 14:38:04,810 INFO L226 Difference]: Without dead ends: 1582 [2024-11-18 14:38:04,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:38:04,815 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 7 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:04,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 705 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:38:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2024-11-18 14:38:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2024-11-18 14:38:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1235 states have (on average 1.3546558704453442) internal successors, (1673), 1263 states have internal predecessors, (1673), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-18 14:38:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2135 transitions. [2024-11-18 14:38:04,922 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2135 transitions. Word has length 270 [2024-11-18 14:38:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:04,922 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 2135 transitions. [2024-11-18 14:38:04,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:38:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2135 transitions. [2024-11-18 14:38:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 14:38:04,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:04,927 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:04,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:38:05,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 14:38:05,128 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:05,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2096741989, now seen corresponding path program 1 times [2024-11-18 14:38:05,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:05,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505621646] [2024-11-18 14:38:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:05,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-18 14:38:05,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:05,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505621646] [2024-11-18 14:38:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505621646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:05,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:38:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342372819] [2024-11-18 14:38:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:05,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:38:05,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:38:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:38:05,681 INFO L87 Difference]: Start difference. First operand 1582 states and 2135 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-18 14:38:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:05,859 INFO L93 Difference]: Finished difference Result 2420 states and 3498 transitions. [2024-11-18 14:38:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:38:05,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 271 [2024-11-18 14:38:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:05,876 INFO L225 Difference]: With dead ends: 2420 [2024-11-18 14:38:05,876 INFO L226 Difference]: Without dead ends: 2418 [2024-11-18 14:38:05,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:38:05,879 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 118 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:05,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1802 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2024-11-18 14:38:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 1630. [2024-11-18 14:38:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1267 states have (on average 1.345698500394633) internal successors, (1705), 1303 states have internal predecessors, (1705), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-18 14:38:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2183 transitions. [2024-11-18 14:38:06,007 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2183 transitions. Word has length 271 [2024-11-18 14:38:06,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:06,008 INFO L471 AbstractCegarLoop]: Abstraction has 1630 states and 2183 transitions. [2024-11-18 14:38:06,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-18 14:38:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2183 transitions. [2024-11-18 14:38:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-18 14:38:06,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:06,012 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:06,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 14:38:06,012 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:06,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:06,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1752313374, now seen corresponding path program 1 times [2024-11-18 14:38:06,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:06,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702001479] [2024-11-18 14:38:06,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:06,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-18 14:38:06,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:06,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702001479] [2024-11-18 14:38:06,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702001479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:06,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197051044] [2024-11-18 14:38:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:06,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:06,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:06,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:06,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:38:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:06,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:38:06,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-18 14:38:06,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-18 14:38:07,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197051044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:07,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:07,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-18 14:38:07,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262691928] [2024-11-18 14:38:07,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:07,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:38:07,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:07,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:38:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:38:07,290 INFO L87 Difference]: Start difference. First operand 1630 states and 2183 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-18 14:38:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:07,907 INFO L93 Difference]: Finished difference Result 4010 states and 5568 transitions. [2024-11-18 14:38:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:38:07,908 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 279 [2024-11-18 14:38:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:07,923 INFO L225 Difference]: With dead ends: 4010 [2024-11-18 14:38:07,924 INFO L226 Difference]: Without dead ends: 2660 [2024-11-18 14:38:07,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:38:07,928 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 251 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 3607 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:07,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 3607 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:38:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2024-11-18 14:38:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2424. [2024-11-18 14:38:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1878 states have (on average 1.334398296059638) internal successors, (2506), 1930 states have internal predecessors, (2506), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2024-11-18 14:38:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3226 transitions. [2024-11-18 14:38:08,110 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3226 transitions. Word has length 279 [2024-11-18 14:38:08,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:08,111 INFO L471 AbstractCegarLoop]: Abstraction has 2424 states and 3226 transitions. [2024-11-18 14:38:08,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-18 14:38:08,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3226 transitions. [2024-11-18 14:38:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-18 14:38:08,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:08,117 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:08,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:38:08,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-18 14:38:08,318 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:08,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash -790699357, now seen corresponding path program 1 times [2024-11-18 14:38:08,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:08,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943737137] [2024-11-18 14:38:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:08,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-18 14:38:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:08,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943737137] [2024-11-18 14:38:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943737137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:08,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064938307] [2024-11-18 14:38:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:08,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:08,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:08,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:38:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:08,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:38:08,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-11-18 14:38:08,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:38:08,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064938307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:08,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:38:08,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 14:38:08,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253186903] [2024-11-18 14:38:08,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:08,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:08,728 INFO L87 Difference]: Start difference. First operand 2424 states and 3226 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:38:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:08,932 INFO L93 Difference]: Finished difference Result 4681 states and 6328 transitions. [2024-11-18 14:38:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:08,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 279 [2024-11-18 14:38:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:08,945 INFO L225 Difference]: With dead ends: 4681 [2024-11-18 14:38:08,945 INFO L226 Difference]: Without dead ends: 2360 [2024-11-18 14:38:08,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:08,951 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 4 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:08,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 705 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:38:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2024-11-18 14:38:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2360. [2024-11-18 14:38:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 1834 states have (on average 1.317339149400218) internal successors, (2416), 1886 states have internal predecessors, (2416), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2024-11-18 14:38:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 3100 transitions. [2024-11-18 14:38:09,088 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 3100 transitions. Word has length 279 [2024-11-18 14:38:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:09,088 INFO L471 AbstractCegarLoop]: Abstraction has 2360 states and 3100 transitions. [2024-11-18 14:38:09,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:38:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 3100 transitions. [2024-11-18 14:38:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 14:38:09,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:09,094 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:09,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:38:09,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:09,299 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:09,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1595526858, now seen corresponding path program 1 times [2024-11-18 14:38:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:09,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688102102] [2024-11-18 14:38:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:09,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-11-18 14:38:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688102102] [2024-11-18 14:38:09,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688102102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:09,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811787849] [2024-11-18 14:38:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:09,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:09,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:09,451 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:09,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:38:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:09,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:38:09,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-11-18 14:38:09,720 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:38:09,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811787849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:09,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:38:09,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 14:38:09,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307840020] [2024-11-18 14:38:09,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:09,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:09,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:09,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:09,723 INFO L87 Difference]: Start difference. First operand 2360 states and 3100 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:38:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:09,917 INFO L93 Difference]: Finished difference Result 4463 states and 5969 transitions. [2024-11-18 14:38:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:09,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 282 [2024-11-18 14:38:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:09,933 INFO L225 Difference]: With dead ends: 4463 [2024-11-18 14:38:09,933 INFO L226 Difference]: Without dead ends: 2188 [2024-11-18 14:38:09,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:09,940 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 4 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:09,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 733 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2024-11-18 14:38:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2188. [2024-11-18 14:38:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1692 states have (on average 1.3114657210401892) internal successors, (2219), 1744 states have internal predecessors, (2219), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2024-11-18 14:38:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2865 transitions. [2024-11-18 14:38:10,126 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2865 transitions. Word has length 282 [2024-11-18 14:38:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:10,127 INFO L471 AbstractCegarLoop]: Abstraction has 2188 states and 2865 transitions. [2024-11-18 14:38:10,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:38:10,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2865 transitions. [2024-11-18 14:38:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-18 14:38:10,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:10,133 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:10,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:38:10,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:10,334 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:10,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1129167005, now seen corresponding path program 1 times [2024-11-18 14:38:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:10,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071405915] [2024-11-18 14:38:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:10,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2024-11-18 14:38:10,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:10,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071405915] [2024-11-18 14:38:10,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071405915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:10,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348376377] [2024-11-18 14:38:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:10,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:10,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:10,749 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:10,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:38:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:11,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 14:38:11,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-18 14:38:11,203 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:38:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348376377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:11,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:38:11,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-18 14:38:11,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79351350] [2024-11-18 14:38:11,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:11,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:38:11,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:11,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:38:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:38:11,206 INFO L87 Difference]: Start difference. First operand 2188 states and 2865 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-18 14:38:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:12,096 INFO L93 Difference]: Finished difference Result 7090 states and 9251 transitions. [2024-11-18 14:38:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:38:12,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 294 [2024-11-18 14:38:12,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:12,129 INFO L225 Difference]: With dead ends: 7090 [2024-11-18 14:38:12,130 INFO L226 Difference]: Without dead ends: 5476 [2024-11-18 14:38:12,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2024-11-18 14:38:12,139 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 630 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:12,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 2691 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:38:12,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2024-11-18 14:38:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 5204. [2024-11-18 14:38:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 3985 states have (on average 1.297867001254705) internal successors, (5172), 4113 states have internal predecessors, (5172), 787 states have call successors, (787), 431 states have call predecessors, (787), 431 states have return successors, (787), 667 states have call predecessors, (787), 787 states have call successors, (787) [2024-11-18 14:38:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 6746 transitions. [2024-11-18 14:38:12,513 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 6746 transitions. Word has length 294 [2024-11-18 14:38:12,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:12,514 INFO L471 AbstractCegarLoop]: Abstraction has 5204 states and 6746 transitions. [2024-11-18 14:38:12,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-18 14:38:12,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 6746 transitions. [2024-11-18 14:38:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 14:38:12,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:12,519 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:12,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:12,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-18 14:38:12,724 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:12,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:12,725 INFO L85 PathProgramCache]: Analyzing trace with hash -22107268, now seen corresponding path program 1 times [2024-11-18 14:38:12,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:12,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035773484] [2024-11-18 14:38:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:12,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2024-11-18 14:38:13,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035773484] [2024-11-18 14:38:13,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035773484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285801596] [2024-11-18 14:38:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:13,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:13,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:13,124 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:13,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:38:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:13,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 14:38:13,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-18 14:38:13,482 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:38:13,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285801596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:13,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:38:13,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2024-11-18 14:38:13,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64061751] [2024-11-18 14:38:13,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:13,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:38:13,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:13,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:38:13,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:38:13,485 INFO L87 Difference]: Start difference. First operand 5204 states and 6746 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-18 14:38:14,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:14,316 INFO L93 Difference]: Finished difference Result 10198 states and 13232 transitions. [2024-11-18 14:38:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:38:14,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 300 [2024-11-18 14:38:14,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:14,344 INFO L225 Difference]: With dead ends: 10198 [2024-11-18 14:38:14,345 INFO L226 Difference]: Without dead ends: 5476 [2024-11-18 14:38:14,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:38:14,360 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 616 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:14,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 2693 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:38:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2024-11-18 14:38:14,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 5204. [2024-11-18 14:38:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 3985 states have (on average 1.2938519447929737) internal successors, (5156), 4113 states have internal predecessors, (5156), 787 states have call successors, (787), 431 states have call predecessors, (787), 431 states have return successors, (787), 667 states have call predecessors, (787), 787 states have call successors, (787) [2024-11-18 14:38:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 6730 transitions. [2024-11-18 14:38:14,758 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 6730 transitions. Word has length 300 [2024-11-18 14:38:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:14,759 INFO L471 AbstractCegarLoop]: Abstraction has 5204 states and 6730 transitions. [2024-11-18 14:38:14,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-18 14:38:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 6730 transitions. [2024-11-18 14:38:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 14:38:14,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:14,765 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:14,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:14,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:14,970 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:14,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash 111906238, now seen corresponding path program 1 times [2024-11-18 14:38:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325941218] [2024-11-18 14:38:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:14,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2024-11-18 14:38:15,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:15,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325941218] [2024-11-18 14:38:15,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325941218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:15,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:15,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:38:15,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631020960] [2024-11-18 14:38:15,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:15,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:38:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:15,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:38:15,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:15,211 INFO L87 Difference]: Start difference. First operand 5204 states and 6730 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-18 14:38:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:15,452 INFO L93 Difference]: Finished difference Result 10082 states and 13223 transitions. [2024-11-18 14:38:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 300 [2024-11-18 14:38:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:15,493 INFO L225 Difference]: With dead ends: 10082 [2024-11-18 14:38:15,494 INFO L226 Difference]: Without dead ends: 5500 [2024-11-18 14:38:15,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:15,508 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 28 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:15,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 762 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5500 states. [2024-11-18 14:38:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5500 to 5496. [2024-11-18 14:38:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5496 states, 4225 states have (on average 1.300828402366864) internal successors, (5496), 4353 states have internal predecessors, (5496), 839 states have call successors, (839), 431 states have call predecessors, (839), 431 states have return successors, (839), 719 states have call predecessors, (839), 839 states have call successors, (839) [2024-11-18 14:38:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 7174 transitions. [2024-11-18 14:38:15,824 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 7174 transitions. Word has length 300 [2024-11-18 14:38:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:15,825 INFO L471 AbstractCegarLoop]: Abstraction has 5496 states and 7174 transitions. [2024-11-18 14:38:15,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-18 14:38:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 7174 transitions. [2024-11-18 14:38:15,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 14:38:15,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:15,829 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:15,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-18 14:38:15,829 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:15,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:15,829 INFO L85 PathProgramCache]: Analyzing trace with hash -909162116, now seen corresponding path program 1 times [2024-11-18 14:38:15,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:15,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596219805] [2024-11-18 14:38:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:15,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2024-11-18 14:38:16,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596219805] [2024-11-18 14:38:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596219805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385062245] [2024-11-18 14:38:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:16,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:16,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:16,240 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:16,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:38:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:16,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 14:38:16,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-18 14:38:16,636 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:38:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385062245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:16,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:38:16,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-18 14:38:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356660067] [2024-11-18 14:38:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:16,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:38:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:38:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:38:16,638 INFO L87 Difference]: Start difference. First operand 5496 states and 7174 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:38:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:17,160 INFO L93 Difference]: Finished difference Result 12616 states and 16464 transitions. [2024-11-18 14:38:17,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:38:17,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 300 [2024-11-18 14:38:17,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:17,196 INFO L225 Difference]: With dead ends: 12616 [2024-11-18 14:38:17,196 INFO L226 Difference]: Without dead ends: 7638 [2024-11-18 14:38:17,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:38:17,214 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 123 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:17,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1889 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:38:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7638 states. [2024-11-18 14:38:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7638 to 6640. [2024-11-18 14:38:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6640 states, 5101 states have (on average 1.295824348167026) internal successors, (6610), 5257 states have internal predecessors, (6610), 1015 states have call successors, (1015), 523 states have call predecessors, (1015), 523 states have return successors, (1015), 867 states have call predecessors, (1015), 1015 states have call successors, (1015) [2024-11-18 14:38:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6640 states to 6640 states and 8640 transitions. [2024-11-18 14:38:17,616 INFO L78 Accepts]: Start accepts. Automaton has 6640 states and 8640 transitions. Word has length 300 [2024-11-18 14:38:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:17,617 INFO L471 AbstractCegarLoop]: Abstraction has 6640 states and 8640 transitions. [2024-11-18 14:38:17,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:38:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6640 states and 8640 transitions. [2024-11-18 14:38:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 14:38:17,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:17,621 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:38:17,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:17,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-18 14:38:17,826 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:17,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:17,826 INFO L85 PathProgramCache]: Analyzing trace with hash -21939270, now seen corresponding path program 1 times [2024-11-18 14:38:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:17,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889970698] [2024-11-18 14:38:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:17,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2024-11-18 14:38:18,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889970698] [2024-11-18 14:38:18,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889970698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:18,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:18,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:38:18,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252108704] [2024-11-18 14:38:18,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:18,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:18,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:18,053 INFO L87 Difference]: Start difference. First operand 6640 states and 8640 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:38:18,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:18,551 INFO L93 Difference]: Finished difference Result 13590 states and 17781 transitions. [2024-11-18 14:38:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:18,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 300 [2024-11-18 14:38:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:18,589 INFO L225 Difference]: With dead ends: 13590 [2024-11-18 14:38:18,589 INFO L226 Difference]: Without dead ends: 7748 [2024-11-18 14:38:18,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:18,607 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 261 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:18,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 710 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:38:18,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7748 states. [2024-11-18 14:38:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7748 to 6780. [2024-11-18 14:38:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6780 states, 5208 states have (on average 1.3043394777265744) internal successors, (6793), 5364 states have internal predecessors, (6793), 1047 states have call successors, (1047), 524 states have call predecessors, (1047), 524 states have return successors, (1047), 899 states have call predecessors, (1047), 1047 states have call successors, (1047) [2024-11-18 14:38:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6780 states to 6780 states and 8887 transitions. [2024-11-18 14:38:19,102 INFO L78 Accepts]: Start accepts. Automaton has 6780 states and 8887 transitions. Word has length 300 [2024-11-18 14:38:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:19,102 INFO L471 AbstractCegarLoop]: Abstraction has 6780 states and 8887 transitions. [2024-11-18 14:38:19,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:38:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 6780 states and 8887 transitions. [2024-11-18 14:38:19,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 14:38:19,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:19,106 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:19,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-18 14:38:19,106 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:19,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2075959218, now seen corresponding path program 1 times [2024-11-18 14:38:19,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:19,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698847868] [2024-11-18 14:38:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2024-11-18 14:38:19,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:19,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698847868] [2024-11-18 14:38:19,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698847868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:19,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:19,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:38:19,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865521487] [2024-11-18 14:38:19,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:19,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:19,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:19,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:19,259 INFO L87 Difference]: Start difference. First operand 6780 states and 8887 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 14:38:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:19,786 INFO L93 Difference]: Finished difference Result 11860 states and 15622 transitions. [2024-11-18 14:38:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:19,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 307 [2024-11-18 14:38:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:19,810 INFO L225 Difference]: With dead ends: 11860 [2024-11-18 14:38:19,811 INFO L226 Difference]: Without dead ends: 5882 [2024-11-18 14:38:19,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:19,826 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 438 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:19,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 923 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:38:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2024-11-18 14:38:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 5854. [2024-11-18 14:38:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5854 states, 4502 states have (on average 1.2900932918702799) internal successors, (5808), 4634 states have internal predecessors, (5808), 903 states have call successors, (903), 448 states have call predecessors, (903), 448 states have return successors, (903), 771 states have call predecessors, (903), 903 states have call successors, (903) [2024-11-18 14:38:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5854 states to 5854 states and 7614 transitions. [2024-11-18 14:38:20,233 INFO L78 Accepts]: Start accepts. Automaton has 5854 states and 7614 transitions. Word has length 307 [2024-11-18 14:38:20,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:20,234 INFO L471 AbstractCegarLoop]: Abstraction has 5854 states and 7614 transitions. [2024-11-18 14:38:20,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 14:38:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5854 states and 7614 transitions. [2024-11-18 14:38:20,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-18 14:38:20,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:20,245 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:20,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-18 14:38:20,245 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:20,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash -493625249, now seen corresponding path program 1 times [2024-11-18 14:38:20,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:20,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982749625] [2024-11-18 14:38:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:20,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2024-11-18 14:38:21,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:21,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982749625] [2024-11-18 14:38:21,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982749625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:21,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:21,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:38:21,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955538458] [2024-11-18 14:38:21,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:21,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:38:21,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:21,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:38:21,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:38:21,265 INFO L87 Difference]: Start difference. First operand 5854 states and 7614 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 14:38:21,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:21,895 INFO L93 Difference]: Finished difference Result 13338 states and 17240 transitions. [2024-11-18 14:38:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:38:21,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 351 [2024-11-18 14:38:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:21,933 INFO L225 Difference]: With dead ends: 13338 [2024-11-18 14:38:21,933 INFO L226 Difference]: Without dead ends: 8286 [2024-11-18 14:38:21,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:38:21,944 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 133 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:21,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1517 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:38:21,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8286 states. [2024-11-18 14:38:22,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8286 to 7690. [2024-11-18 14:38:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7690 states, 5890 states have (on average 1.2760611205432937) internal successors, (7516), 6054 states have internal predecessors, (7516), 1143 states have call successors, (1143), 596 states have call predecessors, (1143), 656 states have return successors, (1231), 1039 states have call predecessors, (1231), 1143 states have call successors, (1231) [2024-11-18 14:38:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7690 states to 7690 states and 9890 transitions. [2024-11-18 14:38:22,456 INFO L78 Accepts]: Start accepts. Automaton has 7690 states and 9890 transitions. Word has length 351 [2024-11-18 14:38:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:22,457 INFO L471 AbstractCegarLoop]: Abstraction has 7690 states and 9890 transitions. [2024-11-18 14:38:22,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 14:38:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7690 states and 9890 transitions. [2024-11-18 14:38:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-18 14:38:22,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:22,472 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:22,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-18 14:38:22,472 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:22,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash -690138754, now seen corresponding path program 1 times [2024-11-18 14:38:22,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:22,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105319784] [2024-11-18 14:38:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2024-11-18 14:38:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105319784] [2024-11-18 14:38:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105319784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:22,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:38:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621031748] [2024-11-18 14:38:22,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:22,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:22,625 INFO L87 Difference]: Start difference. First operand 7690 states and 9890 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-18 14:38:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:23,337 INFO L93 Difference]: Finished difference Result 15517 states and 19923 transitions. [2024-11-18 14:38:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:23,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 351 [2024-11-18 14:38:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:23,380 INFO L225 Difference]: With dead ends: 15517 [2024-11-18 14:38:23,380 INFO L226 Difference]: Without dead ends: 7450 [2024-11-18 14:38:23,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:23,401 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 26 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:23,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 679 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:38:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7450 states. [2024-11-18 14:38:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7450 to 7450. [2024-11-18 14:38:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7450 states, 5710 states have (on average 1.2401050788091068) internal successors, (7081), 5874 states have internal predecessors, (7081), 1143 states have call successors, (1143), 596 states have call predecessors, (1143), 596 states have return successors, (1143), 979 states have call predecessors, (1143), 1143 states have call successors, (1143) [2024-11-18 14:38:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7450 states to 7450 states and 9367 transitions. [2024-11-18 14:38:23,954 INFO L78 Accepts]: Start accepts. Automaton has 7450 states and 9367 transitions. Word has length 351 [2024-11-18 14:38:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:23,954 INFO L471 AbstractCegarLoop]: Abstraction has 7450 states and 9367 transitions. [2024-11-18 14:38:23,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-18 14:38:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7450 states and 9367 transitions. [2024-11-18 14:38:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-18 14:38:23,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:23,969 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:23,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-18 14:38:23,969 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:23,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash -9061916, now seen corresponding path program 1 times [2024-11-18 14:38:23,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:23,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663922611] [2024-11-18 14:38:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:23,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2024-11-18 14:38:25,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663922611] [2024-11-18 14:38:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663922611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215326931] [2024-11-18 14:38:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:25,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:25,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:25,388 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:25,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:38:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:25,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-18 14:38:25,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 285 proven. 79 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-18 14:38:26,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2024-11-18 14:38:27,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215326931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:27,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:27,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 38 [2024-11-18 14:38:27,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012747629] [2024-11-18 14:38:27,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:27,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-18 14:38:27,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-18 14:38:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1235, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 14:38:27,027 INFO L87 Difference]: Start difference. First operand 7450 states and 9367 transitions. Second operand has 38 states, 36 states have (on average 7.083333333333333) internal successors, (255), 32 states have internal predecessors, (255), 9 states have call successors, (50), 8 states have call predecessors, (50), 19 states have return successors, (53), 13 states have call predecessors, (53), 9 states have call successors, (53) [2024-11-18 14:38:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:32,615 INFO L93 Difference]: Finished difference Result 30363 states and 39278 transitions. [2024-11-18 14:38:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-18 14:38:32,616 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 7.083333333333333) internal successors, (255), 32 states have internal predecessors, (255), 9 states have call successors, (50), 8 states have call predecessors, (50), 19 states have return successors, (53), 13 states have call predecessors, (53), 9 states have call successors, (53) Word has length 361 [2024-11-18 14:38:32,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:32,737 INFO L225 Difference]: With dead ends: 30363 [2024-11-18 14:38:32,737 INFO L226 Difference]: Without dead ends: 23787 [2024-11-18 14:38:32,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1533, Invalid=8169, Unknown=0, NotChecked=0, Total=9702 [2024-11-18 14:38:32,766 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 2080 mSDsluCounter, 7231 mSDsCounter, 0 mSdLazyCounter, 5186 mSolverCounterSat, 817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 7778 SdHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 5186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:32,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2080 Valid, 7778 Invalid, 6003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [817 Valid, 5186 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 14:38:32,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23787 states. [2024-11-18 14:38:34,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23787 to 14844. [2024-11-18 14:38:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14844 states, 11365 states have (on average 1.2333479982402111) internal successors, (14017), 11621 states have internal predecessors, (14017), 2275 states have call successors, (2275), 1203 states have call predecessors, (2275), 1203 states have return successors, (2275), 2019 states have call predecessors, (2275), 2275 states have call successors, (2275) [2024-11-18 14:38:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14844 states to 14844 states and 18567 transitions. [2024-11-18 14:38:34,192 INFO L78 Accepts]: Start accepts. Automaton has 14844 states and 18567 transitions. Word has length 361 [2024-11-18 14:38:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:34,193 INFO L471 AbstractCegarLoop]: Abstraction has 14844 states and 18567 transitions. [2024-11-18 14:38:34,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 7.083333333333333) internal successors, (255), 32 states have internal predecessors, (255), 9 states have call successors, (50), 8 states have call predecessors, (50), 19 states have return successors, (53), 13 states have call predecessors, (53), 9 states have call successors, (53) [2024-11-18 14:38:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand 14844 states and 18567 transitions. [2024-11-18 14:38:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-18 14:38:34,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:34,220 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:34,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 14:38:34,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-18 14:38:34,421 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:34,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1861832708, now seen corresponding path program 1 times [2024-11-18 14:38:34,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:34,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826255742] [2024-11-18 14:38:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 56 proven. 55 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2024-11-18 14:38:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826255742] [2024-11-18 14:38:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826255742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835404559] [2024-11-18 14:38:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:35,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:35,745 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:35,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:38:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:36,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-18 14:38:36,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 266 proven. 96 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-18 14:38:36,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 56 proven. 55 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2024-11-18 14:38:37,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835404559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:37,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:37,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 38 [2024-11-18 14:38:37,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633548013] [2024-11-18 14:38:37,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:37,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-18 14:38:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:37,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-18 14:38:37,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 14:38:37,116 INFO L87 Difference]: Start difference. First operand 14844 states and 18567 transitions. Second operand has 38 states, 36 states have (on average 7.416666666666667) internal successors, (267), 32 states have internal predecessors, (267), 9 states have call successors, (53), 8 states have call predecessors, (53), 18 states have return successors, (56), 12 states have call predecessors, (56), 8 states have call successors, (56) [2024-11-18 14:38:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:44,485 INFO L93 Difference]: Finished difference Result 49816 states and 64767 transitions. [2024-11-18 14:38:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-18 14:38:44,486 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 7.416666666666667) internal successors, (267), 32 states have internal predecessors, (267), 9 states have call successors, (53), 8 states have call predecessors, (53), 18 states have return successors, (56), 12 states have call predecessors, (56), 8 states have call successors, (56) Word has length 361 [2024-11-18 14:38:44,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:44,642 INFO L225 Difference]: With dead ends: 49816 [2024-11-18 14:38:44,642 INFO L226 Difference]: Without dead ends: 36162 [2024-11-18 14:38:44,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2408 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1530, Invalid=8172, Unknown=0, NotChecked=0, Total=9702 [2024-11-18 14:38:44,695 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 1824 mSDsluCounter, 10139 mSDsCounter, 0 mSdLazyCounter, 6401 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 10802 SdHoareTripleChecker+Invalid, 7102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 6401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:44,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 10802 Invalid, 7102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 6401 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-18 14:38:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36162 states. [2024-11-18 14:38:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36162 to 28503. [2024-11-18 14:38:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28503 states, 21810 states have (on average 1.2315451627693719) internal successors, (26860), 22305 states have internal predecessors, (26860), 4387 states have call successors, (4387), 2305 states have call predecessors, (4387), 2305 states have return successors, (4387), 3892 states have call predecessors, (4387), 4387 states have call successors, (4387) [2024-11-18 14:38:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28503 states to 28503 states and 35634 transitions. [2024-11-18 14:38:47,593 INFO L78 Accepts]: Start accepts. Automaton has 28503 states and 35634 transitions. Word has length 361 [2024-11-18 14:38:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:47,594 INFO L471 AbstractCegarLoop]: Abstraction has 28503 states and 35634 transitions. [2024-11-18 14:38:47,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 7.416666666666667) internal successors, (267), 32 states have internal predecessors, (267), 9 states have call successors, (53), 8 states have call predecessors, (53), 18 states have return successors, (56), 12 states have call predecessors, (56), 8 states have call successors, (56) [2024-11-18 14:38:47,595 INFO L276 IsEmpty]: Start isEmpty. Operand 28503 states and 35634 transitions. [2024-11-18 14:38:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-18 14:38:47,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:47,657 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:47,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:38:47,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:47,858 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:47,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1665650502, now seen corresponding path program 1 times [2024-11-18 14:38:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:47,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574416405] [2024-11-18 14:38:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2024-11-18 14:38:48,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:48,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574416405] [2024-11-18 14:38:48,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574416405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:48,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:48,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:38:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226630806] [2024-11-18 14:38:48,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:48,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:38:48,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:48,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:38:48,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:38:48,129 INFO L87 Difference]: Start difference. First operand 28503 states and 35634 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 14:38:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:50,835 INFO L93 Difference]: Finished difference Result 56192 states and 70341 transitions. [2024-11-18 14:38:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:38:50,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 366 [2024-11-18 14:38:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:50,954 INFO L225 Difference]: With dead ends: 56192 [2024-11-18 14:38:50,954 INFO L226 Difference]: Without dead ends: 28948 [2024-11-18 14:38:51,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:38:51,022 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 140 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:51,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1784 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:38:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28948 states. [2024-11-18 14:38:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28948 to 28709. [2024-11-18 14:38:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28709 states, 21965 states have (on average 1.2313680855907125) internal successors, (27047), 22466 states have internal predecessors, (27047), 4415 states have call successors, (4415), 2328 states have call predecessors, (4415), 2328 states have return successors, (4415), 3914 states have call predecessors, (4415), 4415 states have call successors, (4415) [2024-11-18 14:38:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28709 states to 28709 states and 35877 transitions. [2024-11-18 14:38:53,895 INFO L78 Accepts]: Start accepts. Automaton has 28709 states and 35877 transitions. Word has length 366 [2024-11-18 14:38:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:53,895 INFO L471 AbstractCegarLoop]: Abstraction has 28709 states and 35877 transitions. [2024-11-18 14:38:53,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 14:38:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 28709 states and 35877 transitions. [2024-11-18 14:38:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-18 14:38:53,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:53,938 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:53,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-18 14:38:53,938 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:53,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1839943138, now seen corresponding path program 1 times [2024-11-18 14:38:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:53,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403398392] [2024-11-18 14:38:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2024-11-18 14:38:54,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403398392] [2024-11-18 14:38:54,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403398392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537314944] [2024-11-18 14:38:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:54,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:54,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:54,868 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:54,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:38:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:55,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 14:38:55,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 295 proven. 65 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2024-11-18 14:38:55,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2024-11-18 14:38:56,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537314944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:56,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:56,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 12] total 22 [2024-11-18 14:38:56,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100479825] [2024-11-18 14:38:56,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:56,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 14:38:56,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 14:38:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:38:56,248 INFO L87 Difference]: Start difference. First operand 28709 states and 35877 transitions. Second operand has 22 states, 21 states have (on average 12.666666666666666) internal successors, (266), 21 states have internal predecessors, (266), 15 states have call successors, (63), 7 states have call predecessors, (63), 6 states have return successors, (61), 14 states have call predecessors, (61), 14 states have call successors, (61)