./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.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_ActiveStandby.5.ufo.BOUNDED-10.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 b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:37:02,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:37:02,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:37:02,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:37:02,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:37:02,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:37:02,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:37:02,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:37:02,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:37:02,107 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:37:02,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:37:02,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:37:02,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:37:02,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:37:02,112 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:37:02,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:37:02,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:37:02,112 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:37:02,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:37:02,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:37:02,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:37:02,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:37:02,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:37:02,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:37:02,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:37:02,113 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:37:02,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:37:02,114 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:37:02,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:37:02,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:37:02,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:37:02,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:37:02,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:02,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:37:02,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:37:02,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:37:02,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:37:02,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:37:02,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:37:02,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:37:02,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:37:02,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:37:02,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 [2024-11-18 14:37:02,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:37:02,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:37:02,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:37:02,328 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:37:02,329 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:37:02,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-11-18 14:37:03,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:37:03,677 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:37:03,678 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-11-18 14:37:03,686 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf5e06a3/c76bfaef4ef64732a5ec4353215d700e/FLAGa241d4256 [2024-11-18 14:37:04,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf5e06a3/c76bfaef4ef64732a5ec4353215d700e [2024-11-18 14:37:04,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:37:04,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:37:04,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:04,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:37:04,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:37:04,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f7eaa3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04, skipping insertion in model container [2024-11-18 14:37:04,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:37:04,351 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_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2024-11-18 14:37:04,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:04,364 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:37:04,412 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_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2024-11-18 14:37:04,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:04,429 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:37:04,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04 WrapperNode [2024-11-18 14:37:04,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:04,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:04,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:37:04,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:37:04,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,476 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 511 [2024-11-18 14:37:04,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:04,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:37:04,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:37:04,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:37:04,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,502 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 14:37:04,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:37:04,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:37:04,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:37:04,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:37:04,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (1/1) ... [2024-11-18 14:37:04,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:04,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:04,564 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 14:37:04,566 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 14:37:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-18 14:37:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-18 14:37:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:37:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-18 14:37:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-18 14:37:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-18 14:37:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-18 14:37:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 14:37:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 14:37:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:37:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-18 14:37:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-18 14:37:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:37:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:37:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-18 14:37:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-18 14:37:04,700 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:37:04,702 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:37:05,151 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-18 14:37:05,151 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:37:05,168 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:37:05,169 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:37:05,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:05 BoogieIcfgContainer [2024-11-18 14:37:05,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:37:05,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:37:05,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:37:05,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:37:05,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:37:04" (1/3) ... [2024-11-18 14:37:05,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e6a060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:05, skipping insertion in model container [2024-11-18 14:37:05,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:04" (2/3) ... [2024-11-18 14:37:05,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e6a060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:05, skipping insertion in model container [2024-11-18 14:37:05,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:05" (3/3) ... [2024-11-18 14:37:05,177 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-11-18 14:37:05,190 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:37:05,190 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:37:05,246 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:37:05,251 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;@330dcbf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:37:05,251 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:37:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 137 states have (on average 1.562043795620438) internal successors, (214), 138 states have internal predecessors, (214), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-18 14:37:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 14:37:05,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:05,264 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] [2024-11-18 14:37:05,265 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:05,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2020441289, now seen corresponding path program 1 times [2024-11-18 14:37:05,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:05,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939694716] [2024-11-18 14:37:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:05,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:05,539 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 14:37:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939694716] [2024-11-18 14:37:05,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939694716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:05,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:05,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 14:37:05,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021836130] [2024-11-18 14:37:05,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:05,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:37:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:05,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:37:05,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:37:05,568 INFO L87 Difference]: Start difference. First operand has 174 states, 137 states have (on average 1.562043795620438) internal successors, (214), 138 states have internal predecessors, (214), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:05,598 INFO L93 Difference]: Finished difference Result 332 states and 544 transitions. [2024-11-18 14:37:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:37:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-18 14:37:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:05,609 INFO L225 Difference]: With dead ends: 332 [2024-11-18 14:37:05,610 INFO L226 Difference]: Without dead ends: 170 [2024-11-18 14:37:05,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:37:05,615 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:05,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-18 14:37:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-18 14:37:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.544776119402985) internal successors, (207), 134 states have internal predecessors, (207), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-18 14:37:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 265 transitions. [2024-11-18 14:37:05,661 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 265 transitions. Word has length 28 [2024-11-18 14:37:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:05,662 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 265 transitions. [2024-11-18 14:37:05,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 265 transitions. [2024-11-18 14:37:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 14:37:05,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:05,663 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] [2024-11-18 14:37:05,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:37:05,664 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:05,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1801586571, now seen corresponding path program 1 times [2024-11-18 14:37:05,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:05,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167502334] [2024-11-18 14:37:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:05,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:05,844 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 14:37:05,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:05,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167502334] [2024-11-18 14:37:05,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167502334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:05,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:05,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358503019] [2024-11-18 14:37:05,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:05,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:05,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:05,850 INFO L87 Difference]: Start difference. First operand 170 states and 265 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:05,933 INFO L93 Difference]: Finished difference Result 437 states and 687 transitions. [2024-11-18 14:37:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:37:05,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-18 14:37:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:05,940 INFO L225 Difference]: With dead ends: 437 [2024-11-18 14:37:05,940 INFO L226 Difference]: Without dead ends: 281 [2024-11-18 14:37:05,943 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 14:37:05,944 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 134 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:05,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1272 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-18 14:37:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 170. [2024-11-18 14:37:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.455223880597015) internal successors, (195), 134 states have internal predecessors, (195), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-18 14:37:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 253 transitions. [2024-11-18 14:37:05,970 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 253 transitions. Word has length 28 [2024-11-18 14:37:05,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:05,970 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 253 transitions. [2024-11-18 14:37:05,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 253 transitions. [2024-11-18 14:37:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 14:37:05,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:05,972 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:05,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:37:05,972 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:05,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash -18195919, now seen corresponding path program 1 times [2024-11-18 14:37:05,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:05,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167193357] [2024-11-18 14:37:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:05,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:06,199 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 14:37:06,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:06,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167193357] [2024-11-18 14:37:06,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167193357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:06,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:06,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:06,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045477048] [2024-11-18 14:37:06,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:06,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:06,203 INFO L87 Difference]: Start difference. First operand 170 states and 253 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, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:06,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:06,267 INFO L93 Difference]: Finished difference Result 327 states and 496 transitions. [2024-11-18 14:37:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:06,268 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, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-11-18 14:37:06,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:06,269 INFO L225 Difference]: With dead ends: 327 [2024-11-18 14:37:06,269 INFO L226 Difference]: Without dead ends: 174 [2024-11-18 14:37:06,271 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 14:37:06,274 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 3 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:06,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 731 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:06,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-18 14:37:06,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-18 14:37:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 137 states have (on average 1.4452554744525548) internal successors, (198), 137 states have internal predecessors, (198), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-18 14:37:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 256 transitions. [2024-11-18 14:37:06,291 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 256 transitions. Word has length 39 [2024-11-18 14:37:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:06,291 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 256 transitions. [2024-11-18 14:37:06,292 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, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 256 transitions. [2024-11-18 14:37:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 14:37:06,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:06,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:06,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:37:06,293 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:06,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:06,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1188938241, now seen corresponding path program 1 times [2024-11-18 14:37:06,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:06,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035949550] [2024-11-18 14:37:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:06,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:06,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:06,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035949550] [2024-11-18 14:37:06,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035949550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:06,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:06,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:06,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460223803] [2024-11-18 14:37:06,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:06,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:06,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:06,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:06,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:06,383 INFO L87 Difference]: Start difference. First operand 174 states and 256 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:06,416 INFO L93 Difference]: Finished difference Result 479 states and 716 transitions. [2024-11-18 14:37:06,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:06,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2024-11-18 14:37:06,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:06,419 INFO L225 Difference]: With dead ends: 479 [2024-11-18 14:37:06,420 INFO L226 Difference]: Without dead ends: 322 [2024-11-18 14:37:06,422 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 14:37:06,423 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 209 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:06,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 502 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-18 14:37:06,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2024-11-18 14:37:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 244 states have (on average 1.4672131147540983) internal successors, (358), 245 states have internal predecessors, (358), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-18 14:37:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 472 transitions. [2024-11-18 14:37:06,449 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 472 transitions. Word has length 55 [2024-11-18 14:37:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:06,449 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 472 transitions. [2024-11-18 14:37:06,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 472 transitions. [2024-11-18 14:37:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:37:06,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:06,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:06,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:37:06,451 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:06,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:06,451 INFO L85 PathProgramCache]: Analyzing trace with hash -198231537, now seen corresponding path program 1 times [2024-11-18 14:37:06,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:06,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41910081] [2024-11-18 14:37:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:06,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:06,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:06,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41910081] [2024-11-18 14:37:06,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41910081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:06,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:06,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:06,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062554107] [2024-11-18 14:37:06,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:06,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:06,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:06,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:06,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:06,519 INFO L87 Difference]: Start difference. First operand 316 states and 472 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:06,567 INFO L93 Difference]: Finished difference Result 890 states and 1340 transitions. [2024-11-18 14:37:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:06,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-18 14:37:06,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:06,574 INFO L225 Difference]: With dead ends: 890 [2024-11-18 14:37:06,575 INFO L226 Difference]: Without dead ends: 591 [2024-11-18 14:37:06,575 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 14:37:06,577 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 205 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:06,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 519 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:06,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-11-18 14:37:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 575. [2024-11-18 14:37:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 433 states have (on average 1.4734411085450347) internal successors, (638), 436 states have internal predecessors, (638), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2024-11-18 14:37:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 864 transitions. [2024-11-18 14:37:06,630 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 864 transitions. Word has length 56 [2024-11-18 14:37:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:06,631 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 864 transitions. [2024-11-18 14:37:06,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 864 transitions. [2024-11-18 14:37:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:37:06,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:06,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:06,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:37:06,636 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:06,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1478095215, now seen corresponding path program 1 times [2024-11-18 14:37:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:06,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8068282] [2024-11-18 14:37:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:06,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:06,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:06,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8068282] [2024-11-18 14:37:06,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8068282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:06,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:06,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236753100] [2024-11-18 14:37:06,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:06,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:06,753 INFO L87 Difference]: Start difference. First operand 575 states and 864 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:06,881 INFO L93 Difference]: Finished difference Result 1226 states and 1841 transitions. [2024-11-18 14:37:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:06,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-18 14:37:06,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:06,886 INFO L225 Difference]: With dead ends: 1226 [2024-11-18 14:37:06,886 INFO L226 Difference]: Without dead ends: 668 [2024-11-18 14:37:06,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:06,888 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 350 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:06,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 645 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-18 14:37:06,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 652. [2024-11-18 14:37:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 502 states have (on average 1.4601593625498008) internal successors, (733), 505 states have internal predecessors, (733), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 967 transitions. [2024-11-18 14:37:06,922 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 967 transitions. Word has length 56 [2024-11-18 14:37:06,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:06,923 INFO L471 AbstractCegarLoop]: Abstraction has 652 states and 967 transitions. [2024-11-18 14:37:06,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 967 transitions. [2024-11-18 14:37:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:06,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:06,924 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, 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 14:37:06,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:37:06,924 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:06,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1509273694, now seen corresponding path program 1 times [2024-11-18 14:37:06,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:06,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080935795] [2024-11-18 14:37:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:06,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080935795] [2024-11-18 14:37:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080935795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937326624] [2024-11-18 14:37:07,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:07,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:07,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:07,048 INFO L87 Difference]: Start difference. First operand 652 states and 967 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:07,193 INFO L93 Difference]: Finished difference Result 1230 states and 1841 transitions. [2024-11-18 14:37:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:07,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-18 14:37:07,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:07,197 INFO L225 Difference]: With dead ends: 1230 [2024-11-18 14:37:07,197 INFO L226 Difference]: Without dead ends: 672 [2024-11-18 14:37:07,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:07,199 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 350 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:07,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 645 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-18 14:37:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 660. [2024-11-18 14:37:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 510 states have (on average 1.4529411764705882) internal successors, (741), 513 states have internal predecessors, (741), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 975 transitions. [2024-11-18 14:37:07,229 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 975 transitions. Word has length 57 [2024-11-18 14:37:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:07,229 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 975 transitions. [2024-11-18 14:37:07,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 975 transitions. [2024-11-18 14:37:07,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:37:07,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,230 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, 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 14:37:07,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:37:07,230 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2145986192, now seen corresponding path program 1 times [2024-11-18 14:37:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509741156] [2024-11-18 14:37:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:07,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509741156] [2024-11-18 14:37:07,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509741156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570846779] [2024-11-18 14:37:07,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:07,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:07,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:07,331 INFO L87 Difference]: Start difference. First operand 660 states and 975 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:07,443 INFO L93 Difference]: Finished difference Result 1218 states and 1821 transitions. [2024-11-18 14:37:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:07,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-18 14:37:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:07,447 INFO L225 Difference]: With dead ends: 1218 [2024-11-18 14:37:07,447 INFO L226 Difference]: Without dead ends: 660 [2024-11-18 14:37:07,449 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 14:37:07,449 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 52 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:07,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 643 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:07,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-18 14:37:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2024-11-18 14:37:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 510 states have (on average 1.4450980392156862) internal successors, (737), 513 states have internal predecessors, (737), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 971 transitions. [2024-11-18 14:37:07,489 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 971 transitions. Word has length 59 [2024-11-18 14:37:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:07,490 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 971 transitions. [2024-11-18 14:37:07,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 971 transitions. [2024-11-18 14:37:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 14:37:07,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,491 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, 1, 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 14:37:07,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:37:07,491 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,491 INFO L85 PathProgramCache]: Analyzing trace with hash -331059873, now seen corresponding path program 1 times [2024-11-18 14:37:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674601113] [2024-11-18 14:37:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:07,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674601113] [2024-11-18 14:37:07,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674601113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543864106] [2024-11-18 14:37:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:07,676 INFO L87 Difference]: Start difference. First operand 660 states and 971 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 14:37:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:07,715 INFO L93 Difference]: Finished difference Result 1238 states and 1845 transitions. [2024-11-18 14:37:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:07,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2024-11-18 14:37:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:07,719 INFO L225 Difference]: With dead ends: 1238 [2024-11-18 14:37:07,719 INFO L226 Difference]: Without dead ends: 680 [2024-11-18 14:37:07,721 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 14:37:07,721 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 4 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:07,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 743 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-18 14:37:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2024-11-18 14:37:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 526 states have (on average 1.4315589353612168) internal successors, (753), 529 states have internal predecessors, (753), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 987 transitions. [2024-11-18 14:37:07,749 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 987 transitions. Word has length 60 [2024-11-18 14:37:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:07,749 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 987 transitions. [2024-11-18 14:37:07,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 14:37:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 987 transitions. [2024-11-18 14:37:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:37:07,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:07,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:37:07,750 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash 552122021, now seen corresponding path program 1 times [2024-11-18 14:37:07,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210992980] [2024-11-18 14:37:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:07,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210992980] [2024-11-18 14:37:07,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210992980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:07,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990555218] [2024-11-18 14:37:07,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:07,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:07,890 INFO L87 Difference]: Start difference. First operand 680 states and 987 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:07,954 INFO L93 Difference]: Finished difference Result 1278 states and 1889 transitions. [2024-11-18 14:37:07,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:07,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2024-11-18 14:37:07,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:07,962 INFO L225 Difference]: With dead ends: 1278 [2024-11-18 14:37:07,962 INFO L226 Difference]: Without dead ends: 700 [2024-11-18 14:37:07,963 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 14:37:07,964 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 4 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:07,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 729 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2024-11-18 14:37:08,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2024-11-18 14:37:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 542 states have (on average 1.418819188191882) internal successors, (769), 545 states have internal predecessors, (769), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1003 transitions. [2024-11-18 14:37:08,007 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1003 transitions. Word has length 68 [2024-11-18 14:37:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,007 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1003 transitions. [2024-11-18 14:37:08,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1003 transitions. [2024-11-18 14:37:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:37:08,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,010 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:37:08,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:37:08,011 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1190568079, now seen corresponding path program 1 times [2024-11-18 14:37:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828771764] [2024-11-18 14:37:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:08,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828771764] [2024-11-18 14:37:08,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828771764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:08,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411862870] [2024-11-18 14:37:08,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:08,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:08,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:08,174 INFO L87 Difference]: Start difference. First operand 700 states and 1003 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,222 INFO L93 Difference]: Finished difference Result 1314 states and 1905 transitions. [2024-11-18 14:37:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:08,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-18 14:37:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,227 INFO L225 Difference]: With dead ends: 1314 [2024-11-18 14:37:08,227 INFO L226 Difference]: Without dead ends: 716 [2024-11-18 14:37:08,229 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 14:37:08,229 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 3 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 739 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-18 14:37:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2024-11-18 14:37:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 554 states have (on average 1.4097472924187726) internal successors, (781), 557 states have internal predecessors, (781), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:08,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1015 transitions. [2024-11-18 14:37:08,262 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1015 transitions. Word has length 76 [2024-11-18 14:37:08,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,262 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 1015 transitions. [2024-11-18 14:37:08,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1015 transitions. [2024-11-18 14:37:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:37:08,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:08,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:37:08,265 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash -707939914, now seen corresponding path program 1 times [2024-11-18 14:37:08,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35810009] [2024-11-18 14:37:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:08,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35810009] [2024-11-18 14:37:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35810009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:08,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011425740] [2024-11-18 14:37:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:08,401 INFO L87 Difference]: Start difference. First operand 716 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,454 INFO L93 Difference]: Finished difference Result 1350 states and 1945 transitions. [2024-11-18 14:37:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:08,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-18 14:37:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,459 INFO L225 Difference]: With dead ends: 1350 [2024-11-18 14:37:08,459 INFO L226 Difference]: Without dead ends: 736 [2024-11-18 14:37:08,460 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 14:37:08,461 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 4 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 729 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-18 14:37:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2024-11-18 14:37:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 570 states have (on average 1.3982456140350876) internal successors, (797), 573 states have internal predecessors, (797), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1031 transitions. [2024-11-18 14:37:08,488 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1031 transitions. Word has length 76 [2024-11-18 14:37:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,489 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 1031 transitions. [2024-11-18 14:37:08,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1031 transitions. [2024-11-18 14:37:08,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 14:37:08,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,490 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:08,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:37:08,490 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2061455174, now seen corresponding path program 1 times [2024-11-18 14:37:08,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618447207] [2024-11-18 14:37:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:08,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618447207] [2024-11-18 14:37:08,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618447207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:08,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946350201] [2024-11-18 14:37:08,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:08,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:08,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:08,658 INFO L87 Difference]: Start difference. First operand 736 states and 1031 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:08,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,713 INFO L93 Difference]: Finished difference Result 1394 states and 1973 transitions. [2024-11-18 14:37:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:08,714 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2024-11-18 14:37:08,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,718 INFO L225 Difference]: With dead ends: 1394 [2024-11-18 14:37:08,718 INFO L226 Difference]: Without dead ends: 760 [2024-11-18 14:37:08,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 14:37:08,721 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 5 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 741 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-18 14:37:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2024-11-18 14:37:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 590 states have (on average 1.3847457627118644) internal successors, (817), 593 states have internal predecessors, (817), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1051 transitions. [2024-11-18 14:37:08,771 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1051 transitions. Word has length 84 [2024-11-18 14:37:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,772 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 1051 transitions. [2024-11-18 14:37:08,772 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1051 transitions. [2024-11-18 14:37:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 14:37:08,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,774 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:08,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:37:08,774 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,774 INFO L85 PathProgramCache]: Analyzing trace with hash 294051441, now seen corresponding path program 1 times [2024-11-18 14:37:08,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576861007] [2024-11-18 14:37:08,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:37:09,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576861007] [2024-11-18 14:37:09,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576861007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:09,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718931979] [2024-11-18 14:37:09,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:09,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:09,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:09,194 INFO L87 Difference]: Start difference. First operand 760 states and 1051 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:37:09,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,406 INFO L93 Difference]: Finished difference Result 1986 states and 2734 transitions. [2024-11-18 14:37:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:09,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2024-11-18 14:37:09,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,412 INFO L225 Difference]: With dead ends: 1986 [2024-11-18 14:37:09,412 INFO L226 Difference]: Without dead ends: 1328 [2024-11-18 14:37:09,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:09,414 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 188 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:09,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1432 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2024-11-18 14:37:09,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 913. [2024-11-18 14:37:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 706 states have (on average 1.3739376770538243) internal successors, (970), 710 states have internal predecessors, (970), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-18 14:37:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1252 transitions. [2024-11-18 14:37:09,469 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1252 transitions. Word has length 87 [2024-11-18 14:37:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,470 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1252 transitions. [2024-11-18 14:37:09,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:37:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1252 transitions. [2024-11-18 14:37:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 14:37:09,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,471 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:09,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:37:09,471 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,471 INFO L85 PathProgramCache]: Analyzing trace with hash -57336768, now seen corresponding path program 1 times [2024-11-18 14:37:09,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269197431] [2024-11-18 14:37:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:37:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269197431] [2024-11-18 14:37:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269197431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591717797] [2024-11-18 14:37:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:09,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:09,609 INFO L87 Difference]: Start difference. First operand 913 states and 1252 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,683 INFO L93 Difference]: Finished difference Result 1699 states and 2353 transitions. [2024-11-18 14:37:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:09,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-11-18 14:37:09,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,688 INFO L225 Difference]: With dead ends: 1699 [2024-11-18 14:37:09,689 INFO L226 Difference]: Without dead ends: 933 [2024-11-18 14:37:09,691 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 14:37:09,692 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 3 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:09,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 739 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:09,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2024-11-18 14:37:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 933. [2024-11-18 14:37:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 721 states have (on average 1.3661581137309293) internal successors, (985), 725 states have internal predecessors, (985), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-18 14:37:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1267 transitions. [2024-11-18 14:37:09,753 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1267 transitions. Word has length 91 [2024-11-18 14:37:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,753 INFO L471 AbstractCegarLoop]: Abstraction has 933 states and 1267 transitions. [2024-11-18 14:37:09,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1267 transitions. [2024-11-18 14:37:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 14:37:09,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,755 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:09,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:37:09,756 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash -56830257, now seen corresponding path program 1 times [2024-11-18 14:37:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612578945] [2024-11-18 14:37:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:37:09,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612578945] [2024-11-18 14:37:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612578945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:09,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719835081] [2024-11-18 14:37:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:09,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:09,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:09,942 INFO L87 Difference]: Start difference. First operand 933 states and 1267 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,046 INFO L93 Difference]: Finished difference Result 1345 states and 1928 transitions. [2024-11-18 14:37:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:37:10,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2024-11-18 14:37:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,053 INFO L225 Difference]: With dead ends: 1345 [2024-11-18 14:37:10,053 INFO L226 Difference]: Without dead ends: 1343 [2024-11-18 14:37:10,054 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 14:37:10,054 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 137 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:10,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1988 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2024-11-18 14:37:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 935. [2024-11-18 14:37:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 721 states have (on average 1.3661581137309293) internal successors, (985), 726 states have internal predecessors, (985), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-18 14:37:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1269 transitions. [2024-11-18 14:37:10,142 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1269 transitions. Word has length 90 [2024-11-18 14:37:10,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,142 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1269 transitions. [2024-11-18 14:37:10,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1269 transitions. [2024-11-18 14:37:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:37:10,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,144 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:37:10,144 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,144 INFO L85 PathProgramCache]: Analyzing trace with hash -130986151, now seen corresponding path program 1 times [2024-11-18 14:37:10,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95349758] [2024-11-18 14:37:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 14:37:10,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95349758] [2024-11-18 14:37:10,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95349758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:10,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274497937] [2024-11-18 14:37:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:10,249 INFO L87 Difference]: Start difference. First operand 935 states and 1269 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:37:10,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,373 INFO L93 Difference]: Finished difference Result 1743 states and 2384 transitions. [2024-11-18 14:37:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:10,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2024-11-18 14:37:10,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,379 INFO L225 Difference]: With dead ends: 1743 [2024-11-18 14:37:10,379 INFO L226 Difference]: Without dead ends: 996 [2024-11-18 14:37:10,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:10,381 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 237 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:10,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1441 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2024-11-18 14:37:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 954. [2024-11-18 14:37:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 745 states have (on average 1.3610738255033556) internal successors, (1014), 754 states have internal predecessors, (1014), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-18 14:37:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1286 transitions. [2024-11-18 14:37:10,430 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1286 transitions. Word has length 93 [2024-11-18 14:37:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,431 INFO L471 AbstractCegarLoop]: Abstraction has 954 states and 1286 transitions. [2024-11-18 14:37:10,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:37:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1286 transitions. [2024-11-18 14:37:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 14:37:10,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,432 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:37:10,432 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash -607433833, now seen corresponding path program 1 times [2024-11-18 14:37:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831312848] [2024-11-18 14:37:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:37:10,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831312848] [2024-11-18 14:37:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831312848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:10,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340108791] [2024-11-18 14:37:10,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:10,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:10,850 INFO L87 Difference]: Start difference. First operand 954 states and 1286 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,014 INFO L93 Difference]: Finished difference Result 1729 states and 2346 transitions. [2024-11-18 14:37:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:11,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2024-11-18 14:37:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,019 INFO L225 Difference]: With dead ends: 1729 [2024-11-18 14:37:11,019 INFO L226 Difference]: Without dead ends: 953 [2024-11-18 14:37:11,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:11,022 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 132 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1517 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:11,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2024-11-18 14:37:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 943. [2024-11-18 14:37:11,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 737 states have (on average 1.3595658073270014) internal successors, (1002), 746 states have internal predecessors, (1002), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-18 14:37:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1270 transitions. [2024-11-18 14:37:11,070 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1270 transitions. Word has length 95 [2024-11-18 14:37:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,070 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1270 transitions. [2024-11-18 14:37:11,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1270 transitions. [2024-11-18 14:37:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 14:37:11,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,071 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:11,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:37:11,071 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2125250997, now seen corresponding path program 1 times [2024-11-18 14:37:11,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978642396] [2024-11-18 14:37:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:37:11,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978642396] [2024-11-18 14:37:11,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978642396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:11,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511642835] [2024-11-18 14:37:11,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:11,444 INFO L87 Difference]: Start difference. First operand 943 states and 1270 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,818 INFO L93 Difference]: Finished difference Result 1798 states and 2408 transitions. [2024-11-18 14:37:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-18 14:37:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,825 INFO L225 Difference]: With dead ends: 1798 [2024-11-18 14:37:11,825 INFO L226 Difference]: Without dead ends: 1002 [2024-11-18 14:37:11,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:11,827 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 510 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1194 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2024-11-18 14:37:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 959. [2024-11-18 14:37:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 745 states have (on average 1.3355704697986577) internal successors, (995), 755 states have internal predecessors, (995), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2024-11-18 14:37:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1269 transitions. [2024-11-18 14:37:11,918 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1269 transitions. Word has length 96 [2024-11-18 14:37:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,919 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1269 transitions. [2024-11-18 14:37:11,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1269 transitions. [2024-11-18 14:37:11,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 14:37:11,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,921 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:11,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:37:11,921 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash -323529142, now seen corresponding path program 1 times [2024-11-18 14:37:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996940488] [2024-11-18 14:37:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:11,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996940488] [2024-11-18 14:37:11,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996940488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:11,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906404164] [2024-11-18 14:37:11,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:11,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:11,998 INFO L87 Difference]: Start difference. First operand 959 states and 1269 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:12,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:12,137 INFO L93 Difference]: Finished difference Result 2534 states and 3373 transitions. [2024-11-18 14:37:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:12,138 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2024-11-18 14:37:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:12,145 INFO L225 Difference]: With dead ends: 2534 [2024-11-18 14:37:12,145 INFO L226 Difference]: Without dead ends: 1773 [2024-11-18 14:37:12,147 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 14:37:12,147 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 193 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:12,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1109 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2024-11-18 14:37:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1540. [2024-11-18 14:37:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1183 states have (on average 1.3296703296703296) internal successors, (1573), 1199 states have internal predecessors, (1573), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-18 14:37:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2035 transitions. [2024-11-18 14:37:12,287 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2035 transitions. Word has length 97 [2024-11-18 14:37:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:12,287 INFO L471 AbstractCegarLoop]: Abstraction has 1540 states and 2035 transitions. [2024-11-18 14:37:12,288 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2035 transitions. [2024-11-18 14:37:12,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 14:37:12,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:12,289 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:12,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:37:12,289 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:12,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:12,289 INFO L85 PathProgramCache]: Analyzing trace with hash -938522497, now seen corresponding path program 1 times [2024-11-18 14:37:12,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:12,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433180340] [2024-11-18 14:37:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:37:12,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:12,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433180340] [2024-11-18 14:37:12,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433180340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:12,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:12,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:12,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786778545] [2024-11-18 14:37:12,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:12,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:12,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:12,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:12,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:12,632 INFO L87 Difference]: Start difference. First operand 1540 states and 2035 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:13,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,084 INFO L93 Difference]: Finished difference Result 3142 states and 4147 transitions. [2024-11-18 14:37:13,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:13,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2024-11-18 14:37:13,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,093 INFO L225 Difference]: With dead ends: 3142 [2024-11-18 14:37:13,093 INFO L226 Difference]: Without dead ends: 1878 [2024-11-18 14:37:13,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:13,096 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 504 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1311 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2024-11-18 14:37:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1565. [2024-11-18 14:37:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1195 states have (on average 1.3230125523012553) internal successors, (1581), 1212 states have internal predecessors, (1581), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-18 14:37:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2059 transitions. [2024-11-18 14:37:13,219 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2059 transitions. Word has length 99 [2024-11-18 14:37:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,219 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 2059 transitions. [2024-11-18 14:37:13,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2059 transitions. [2024-11-18 14:37:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:13,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,221 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:37:13,221 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1096774987, now seen corresponding path program 1 times [2024-11-18 14:37:13,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923177198] [2024-11-18 14:37:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:13,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923177198] [2024-11-18 14:37:13,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923177198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:13,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697721135] [2024-11-18 14:37:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:13,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:13,303 INFO L87 Difference]: Start difference. First operand 1565 states and 2059 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,517 INFO L93 Difference]: Finished difference Result 3903 states and 5167 transitions. [2024-11-18 14:37:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:13,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-18 14:37:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,533 INFO L225 Difference]: With dead ends: 3903 [2024-11-18 14:37:13,534 INFO L226 Difference]: Without dead ends: 2655 [2024-11-18 14:37:13,537 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 14:37:13,538 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 199 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1147 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2024-11-18 14:37:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2454. [2024-11-18 14:37:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 1847 states have (on average 1.3134813210611802) internal successors, (2426), 1874 states have internal predecessors, (2426), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-18 14:37:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3214 transitions. [2024-11-18 14:37:13,715 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3214 transitions. Word has length 101 [2024-11-18 14:37:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,715 INFO L471 AbstractCegarLoop]: Abstraction has 2454 states and 3214 transitions. [2024-11-18 14:37:13,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3214 transitions. [2024-11-18 14:37:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:13,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,718 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:37:13,718 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1668969668, now seen corresponding path program 1 times [2024-11-18 14:37:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088828296] [2024-11-18 14:37:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:13,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088828296] [2024-11-18 14:37:13,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088828296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:13,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544669739] [2024-11-18 14:37:13,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:13,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:13,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:13,797 INFO L87 Difference]: Start difference. First operand 2454 states and 3214 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:14,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,077 INFO L93 Difference]: Finished difference Result 4709 states and 6192 transitions. [2024-11-18 14:37:14,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:14,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-18 14:37:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,092 INFO L225 Difference]: With dead ends: 4709 [2024-11-18 14:37:14,092 INFO L226 Difference]: Without dead ends: 2463 [2024-11-18 14:37:14,098 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 14:37:14,099 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 3 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:14,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 468 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2024-11-18 14:37:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 2457. [2024-11-18 14:37:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 1850 states have (on average 1.3129729729729729) internal successors, (2429), 1877 states have internal predecessors, (2429), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-18 14:37:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3217 transitions. [2024-11-18 14:37:14,288 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3217 transitions. Word has length 101 [2024-11-18 14:37:14,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:14,289 INFO L471 AbstractCegarLoop]: Abstraction has 2457 states and 3217 transitions. [2024-11-18 14:37:14,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3217 transitions. [2024-11-18 14:37:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:14,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:14,290 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:14,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:37:14,291 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:14,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1479038139, now seen corresponding path program 1 times [2024-11-18 14:37:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:14,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501232583] [2024-11-18 14:37:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:14,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501232583] [2024-11-18 14:37:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501232583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:14,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:14,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:14,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084394359] [2024-11-18 14:37:14,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:14,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:14,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:14,368 INFO L87 Difference]: Start difference. First operand 2457 states and 3217 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,644 INFO L93 Difference]: Finished difference Result 5832 states and 7674 transitions. [2024-11-18 14:37:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:14,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-18 14:37:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,661 INFO L225 Difference]: With dead ends: 5832 [2024-11-18 14:37:14,661 INFO L226 Difference]: Without dead ends: 3813 [2024-11-18 14:37:14,666 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 14:37:14,667 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 192 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:14,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1161 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:14,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2024-11-18 14:37:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3378. [2024-11-18 14:37:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 2532 states have (on average 1.3092417061611374) internal successors, (3315), 2569 states have internal predecessors, (3315), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2024-11-18 14:37:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4417 transitions. [2024-11-18 14:37:14,907 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4417 transitions. Word has length 101 [2024-11-18 14:37:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:14,907 INFO L471 AbstractCegarLoop]: Abstraction has 3378 states and 4417 transitions. [2024-11-18 14:37:14,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4417 transitions. [2024-11-18 14:37:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 14:37:14,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:14,910 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:14,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 14:37:14,910 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:14,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1548196706, now seen corresponding path program 1 times [2024-11-18 14:37:14,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:14,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465326113] [2024-11-18 14:37:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:14,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465326113] [2024-11-18 14:37:15,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465326113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:15,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122726726] [2024-11-18 14:37:15,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:15,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:15,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:15,012 INFO L87 Difference]: Start difference. First operand 3378 states and 4417 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:15,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,205 INFO L93 Difference]: Finished difference Result 6408 states and 8402 transitions. [2024-11-18 14:37:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:15,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-18 14:37:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,223 INFO L225 Difference]: With dead ends: 6408 [2024-11-18 14:37:15,223 INFO L226 Difference]: Without dead ends: 3102 [2024-11-18 14:37:15,230 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 14:37:15,231 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 74 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 728 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:15,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2024-11-18 14:37:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 2997. [2024-11-18 14:37:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2228 states have (on average 1.3141831238779174) internal successors, (2928), 2252 states have internal predecessors, (2928), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-18 14:37:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 3932 transitions. [2024-11-18 14:37:15,448 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 3932 transitions. Word has length 102 [2024-11-18 14:37:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:15,448 INFO L471 AbstractCegarLoop]: Abstraction has 2997 states and 3932 transitions. [2024-11-18 14:37:15,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 3932 transitions. [2024-11-18 14:37:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:15,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:15,450 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:15,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 14:37:15,450 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash 111128838, now seen corresponding path program 1 times [2024-11-18 14:37:15,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512628768] [2024-11-18 14:37:15,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:15,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512628768] [2024-11-18 14:37:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512628768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:15,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382190960] [2024-11-18 14:37:15,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:15,499 INFO L87 Difference]: Start difference. First operand 2997 states and 3932 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,694 INFO L93 Difference]: Finished difference Result 5841 states and 7695 transitions. [2024-11-18 14:37:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-18 14:37:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,708 INFO L225 Difference]: With dead ends: 5841 [2024-11-18 14:37:15,709 INFO L226 Difference]: Without dead ends: 3025 [2024-11-18 14:37:15,717 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 14:37:15,718 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 4 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 466 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2024-11-18 14:37:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 3004. [2024-11-18 14:37:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 2235 states have (on average 1.313199105145414) internal successors, (2935), 2259 states have internal predecessors, (2935), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-18 14:37:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 3939 transitions. [2024-11-18 14:37:16,032 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 3939 transitions. Word has length 104 [2024-11-18 14:37:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:16,032 INFO L471 AbstractCegarLoop]: Abstraction has 3004 states and 3939 transitions. [2024-11-18 14:37:16,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 3939 transitions. [2024-11-18 14:37:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:16,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:16,034 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:16,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 14:37:16,035 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:16,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2075822738, now seen corresponding path program 1 times [2024-11-18 14:37:16,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:16,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020837287] [2024-11-18 14:37:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:16,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020837287] [2024-11-18 14:37:16,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020837287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:16,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:16,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:16,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384510353] [2024-11-18 14:37:16,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:16,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:16,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:16,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:16,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:16,171 INFO L87 Difference]: Start difference. First operand 3004 states and 3939 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:16,393 INFO L93 Difference]: Finished difference Result 5802 states and 7632 transitions. [2024-11-18 14:37:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:16,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-18 14:37:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:16,406 INFO L225 Difference]: With dead ends: 5802 [2024-11-18 14:37:16,407 INFO L226 Difference]: Without dead ends: 2917 [2024-11-18 14:37:16,412 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 14:37:16,413 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 60 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:16,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 720 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2024-11-18 14:37:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2761. [2024-11-18 14:37:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2051 states have (on average 1.3125304729400293) internal successors, (2692), 2070 states have internal predecessors, (2692), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2024-11-18 14:37:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 3620 transitions. [2024-11-18 14:37:16,605 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 3620 transitions. Word has length 104 [2024-11-18 14:37:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:16,605 INFO L471 AbstractCegarLoop]: Abstraction has 2761 states and 3620 transitions. [2024-11-18 14:37:16,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 3620 transitions. [2024-11-18 14:37:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 14:37:16,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:16,609 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:16,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 14:37:16,609 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:16,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash -356244414, now seen corresponding path program 1 times [2024-11-18 14:37:16,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:16,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471342504] [2024-11-18 14:37:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:16,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471342504] [2024-11-18 14:37:16,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471342504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:16,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092743841] [2024-11-18 14:37:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:16,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:16,898 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 14:37:16,899 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 14:37:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:17,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 14:37:17,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:37:17,141 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092743841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:17,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-18 14:37:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149189822] [2024-11-18 14:37:17,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:17,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:17,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:37:17,143 INFO L87 Difference]: Start difference. First operand 2761 states and 3620 transitions. Second operand has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:37:17,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:17,311 INFO L93 Difference]: Finished difference Result 5192 states and 6850 transitions. [2024-11-18 14:37:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:17,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 154 [2024-11-18 14:37:17,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:17,324 INFO L225 Difference]: With dead ends: 5192 [2024-11-18 14:37:17,324 INFO L226 Difference]: Without dead ends: 2590 [2024-11-18 14:37:17,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:37:17,332 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:17,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 988 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2024-11-18 14:37:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2574. [2024-11-18 14:37:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 1909 states have (on average 1.3090623363017286) internal successors, (2499), 1926 states have internal predecessors, (2499), 435 states have call successors, (435), 229 states have call predecessors, (435), 229 states have return successors, (435), 418 states have call predecessors, (435), 435 states have call successors, (435) [2024-11-18 14:37:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 3369 transitions. [2024-11-18 14:37:17,515 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 3369 transitions. Word has length 154 [2024-11-18 14:37:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:17,516 INFO L471 AbstractCegarLoop]: Abstraction has 2574 states and 3369 transitions. [2024-11-18 14:37:17,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:37:17,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 3369 transitions. [2024-11-18 14:37:17,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:37:17,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:17,547 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:17,569 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 14:37:17,749 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,SelfDestructingSolverStorable27 [2024-11-18 14:37:17,749 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:17,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash -111372330, now seen corresponding path program 1 times [2024-11-18 14:37:17,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:17,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330569004] [2024-11-18 14:37:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:18,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330569004] [2024-11-18 14:37:18,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330569004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466420670] [2024-11-18 14:37:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:18,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:18,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:18,406 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 14:37:18,407 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 14:37:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:18,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 14:37:18,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:18,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466420670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:19,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 23 [2024-11-18 14:37:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46594938] [2024-11-18 14:37:19,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:19,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:37:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:37:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:37:19,118 INFO L87 Difference]: Start difference. First operand 2574 states and 3369 transitions. Second operand has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 20 states have internal predecessors, (240), 8 states have call successors, (40), 4 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 8 states have call successors, (39) [2024-11-18 14:37:20,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:20,497 INFO L93 Difference]: Finished difference Result 7254 states and 9536 transitions. [2024-11-18 14:37:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 14:37:20,497 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 20 states have internal predecessors, (240), 8 states have call successors, (40), 4 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 8 states have call successors, (39) Word has length 156 [2024-11-18 14:37:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:20,516 INFO L225 Difference]: With dead ends: 7254 [2024-11-18 14:37:20,516 INFO L226 Difference]: Without dead ends: 4910 [2024-11-18 14:37:20,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1532, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 14:37:20,524 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 1935 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:20,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 3175 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:37:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4910 states. [2024-11-18 14:37:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4910 to 4402. [2024-11-18 14:37:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3266 states have (on average 1.312614819350888) internal successors, (4287), 3294 states have internal predecessors, (4287), 741 states have call successors, (741), 394 states have call predecessors, (741), 394 states have return successors, (741), 713 states have call predecessors, (741), 741 states have call successors, (741) [2024-11-18 14:37:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5769 transitions. [2024-11-18 14:37:20,958 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5769 transitions. Word has length 156 [2024-11-18 14:37:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:20,959 INFO L471 AbstractCegarLoop]: Abstraction has 4402 states and 5769 transitions. [2024-11-18 14:37:20,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 20 states have internal predecessors, (240), 8 states have call successors, (40), 4 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 8 states have call successors, (39) [2024-11-18 14:37:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5769 transitions. [2024-11-18 14:37:20,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 14:37:20,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:20,965 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:20,980 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 14:37:21,169 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,SelfDestructingSolverStorable28 [2024-11-18 14:37:21,170 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:21,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:21,170 INFO L85 PathProgramCache]: Analyzing trace with hash 644492505, now seen corresponding path program 1 times [2024-11-18 14:37:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:21,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046123195] [2024-11-18 14:37:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046123195] [2024-11-18 14:37:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046123195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018896364] [2024-11-18 14:37:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:21,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:21,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:21,520 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 14:37:21,522 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 14:37:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:21,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-18 14:37:21,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 61 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:22,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:22,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018896364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:22,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:22,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 22 [2024-11-18 14:37:22,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609668016] [2024-11-18 14:37:22,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:22,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 14:37:22,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:22,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 14:37:22,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:37:22,711 INFO L87 Difference]: Start difference. First operand 4402 states and 5769 transitions. Second operand has 22 states, 22 states have (on average 11.318181818181818) internal successors, (249), 22 states have internal predecessors, (249), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-18 14:37:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:24,863 INFO L93 Difference]: Finished difference Result 10430 states and 13660 transitions. [2024-11-18 14:37:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-18 14:37:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.318181818181818) internal successors, (249), 22 states have internal predecessors, (249), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) Word has length 157 [2024-11-18 14:37:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:24,884 INFO L225 Difference]: With dead ends: 10430 [2024-11-18 14:37:24,884 INFO L226 Difference]: Without dead ends: 6273 [2024-11-18 14:37:24,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=851, Invalid=2455, Unknown=0, NotChecked=0, Total=3306 [2024-11-18 14:37:24,895 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 1774 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:24,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1774 Valid, 2939 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 14:37:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2024-11-18 14:37:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 5961. [2024-11-18 14:37:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 4419 states have (on average 1.3048200950441275) internal successors, (5766), 4458 states have internal predecessors, (5766), 998 states have call successors, (998), 543 states have call predecessors, (998), 543 states have return successors, (998), 959 states have call predecessors, (998), 998 states have call successors, (998) [2024-11-18 14:37:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 7762 transitions. [2024-11-18 14:37:25,459 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 7762 transitions. Word has length 157 [2024-11-18 14:37:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:25,460 INFO L471 AbstractCegarLoop]: Abstraction has 5961 states and 7762 transitions. [2024-11-18 14:37:25,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.318181818181818) internal successors, (249), 22 states have internal predecessors, (249), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-18 14:37:25,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 7762 transitions. [2024-11-18 14:37:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:37:25,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:25,466 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:25,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:25,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:25,668 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:25,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1757700667, now seen corresponding path program 1 times [2024-11-18 14:37:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:25,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601518376] [2024-11-18 14:37:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:25,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-18 14:37:25,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601518376] [2024-11-18 14:37:25,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601518376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:25,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:25,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:25,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978414791] [2024-11-18 14:37:25,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:25,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:25,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:25,814 INFO L87 Difference]: Start difference. First operand 5961 states and 7762 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:37:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:27,108 INFO L93 Difference]: Finished difference Result 17469 states and 22812 transitions. [2024-11-18 14:37:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:27,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 159 [2024-11-18 14:37:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:27,154 INFO L225 Difference]: With dead ends: 17469 [2024-11-18 14:37:27,154 INFO L226 Difference]: Without dead ends: 11813 [2024-11-18 14:37:27,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:27,170 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 216 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:27,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2215 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:27,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11813 states. [2024-11-18 14:37:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11813 to 8445. [2024-11-18 14:37:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8445 states, 6207 states have (on average 1.302883840824875) internal successors, (8087), 6264 states have internal predecessors, (8087), 1462 states have call successors, (1462), 775 states have call predecessors, (1462), 775 states have return successors, (1462), 1405 states have call predecessors, (1462), 1462 states have call successors, (1462) [2024-11-18 14:37:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8445 states to 8445 states and 11011 transitions. [2024-11-18 14:37:28,190 INFO L78 Accepts]: Start accepts. Automaton has 8445 states and 11011 transitions. Word has length 159 [2024-11-18 14:37:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:28,191 INFO L471 AbstractCegarLoop]: Abstraction has 8445 states and 11011 transitions. [2024-11-18 14:37:28,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:37:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8445 states and 11011 transitions. [2024-11-18 14:37:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:37:28,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:28,205 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:28,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-18 14:37:28,206 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:28,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:28,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1237205169, now seen corresponding path program 1 times [2024-11-18 14:37:28,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851662952] [2024-11-18 14:37:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:28,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:37:28,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:28,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851662952] [2024-11-18 14:37:28,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851662952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:28,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9009472] [2024-11-18 14:37:28,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:28,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:28,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:28,697 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 14:37:28,698 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 14:37:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:28,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-18 14:37:28,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 59 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:29,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:29,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9009472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:29,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:29,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 9] total 27 [2024-11-18 14:37:29,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319686604] [2024-11-18 14:37:29,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:29,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 14:37:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 14:37:29,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:37:29,947 INFO L87 Difference]: Start difference. First operand 8445 states and 11011 transitions. Second operand has 27 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 8 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 8 states have call successors, (35) [2024-11-18 14:37:33,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:33,449 INFO L93 Difference]: Finished difference Result 23563 states and 30652 transitions. [2024-11-18 14:37:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-18 14:37:33,449 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 8 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 8 states have call successors, (35) Word has length 159 [2024-11-18 14:37:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:33,505 INFO L225 Difference]: With dead ends: 23563 [2024-11-18 14:37:33,505 INFO L226 Difference]: Without dead ends: 15372 [2024-11-18 14:37:33,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=549, Invalid=3233, Unknown=0, NotChecked=0, Total=3782 [2024-11-18 14:37:33,523 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 1261 mSDsluCounter, 5075 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 5509 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:33,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 5509 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 14:37:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15372 states. [2024-11-18 14:37:34,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15372 to 10181. [2024-11-18 14:37:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10181 states, 7473 states have (on average 1.3005486417770642) internal successors, (9719), 7547 states have internal predecessors, (9719), 1756 states have call successors, (1756), 951 states have call predecessors, (1756), 951 states have return successors, (1756), 1682 states have call predecessors, (1756), 1756 states have call successors, (1756) [2024-11-18 14:37:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10181 states to 10181 states and 13231 transitions. [2024-11-18 14:37:35,027 INFO L78 Accepts]: Start accepts. Automaton has 10181 states and 13231 transitions. Word has length 159 [2024-11-18 14:37:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:35,028 INFO L471 AbstractCegarLoop]: Abstraction has 10181 states and 13231 transitions. [2024-11-18 14:37:35,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 8 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 8 states have call successors, (35) [2024-11-18 14:37:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 10181 states and 13231 transitions. [2024-11-18 14:37:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 14:37:35,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:35,036 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:35,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:35,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:35,241 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:35,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash -892481483, now seen corresponding path program 1 times [2024-11-18 14:37:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635214344] [2024-11-18 14:37:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 14:37:35,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:35,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635214344] [2024-11-18 14:37:35,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635214344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:35,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437443046] [2024-11-18 14:37:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:35,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:35,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:35,914 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 14:37:35,915 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 14:37:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:36,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 14:37:36,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 71 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:36,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 14:37:36,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437443046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:36,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:36,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2024-11-18 14:37:36,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927837412] [2024-11-18 14:37:36,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:36,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 14:37:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 14:37:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:37:36,711 INFO L87 Difference]: Start difference. First operand 10181 states and 13231 transitions. Second operand has 24 states, 24 states have (on average 11.041666666666666) internal successors, (265), 24 states have internal predecessors, (265), 10 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-18 14:37:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:40,179 INFO L93 Difference]: Finished difference Result 25996 states and 33826 transitions. [2024-11-18 14:37:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-18 14:37:40,180 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.041666666666666) internal successors, (265), 24 states have internal predecessors, (265), 10 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 168 [2024-11-18 14:37:40,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:40,225 INFO L225 Difference]: With dead ends: 25996 [2024-11-18 14:37:40,225 INFO L226 Difference]: Without dead ends: 16066 [2024-11-18 14:37:40,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=753, Invalid=3153, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 14:37:40,242 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 4082 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:40,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 3565 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1218 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 14:37:40,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16066 states. [2024-11-18 14:37:42,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16066 to 14786. [2024-11-18 14:37:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14786 states, 10820 states have (on average 1.3014787430683918) internal successors, (14082), 10934 states have internal predecessors, (14082), 2572 states have call successors, (2572), 1393 states have call predecessors, (2572), 1393 states have return successors, (2572), 2458 states have call predecessors, (2572), 2572 states have call successors, (2572) [2024-11-18 14:37:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14786 states to 14786 states and 19226 transitions. [2024-11-18 14:37:42,260 INFO L78 Accepts]: Start accepts. Automaton has 14786 states and 19226 transitions. Word has length 168 [2024-11-18 14:37:42,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:42,261 INFO L471 AbstractCegarLoop]: Abstraction has 14786 states and 19226 transitions. [2024-11-18 14:37:42,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.041666666666666) internal successors, (265), 24 states have internal predecessors, (265), 10 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-18 14:37:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 14786 states and 19226 transitions. [2024-11-18 14:37:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 14:37:42,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:42,268 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:42,282 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 14:37:42,468 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,SelfDestructingSolverStorable32 [2024-11-18 14:37:42,469 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:42,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash -955521680, now seen corresponding path program 1 times [2024-11-18 14:37:42,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:42,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915682974] [2024-11-18 14:37:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 14:37:42,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915682974] [2024-11-18 14:37:42,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915682974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730384787] [2024-11-18 14:37:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:42,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:42,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:42,988 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 14:37:42,988 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 14:37:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:43,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 14:37:43,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 59 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:43,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 14:37:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730384787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:43,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:43,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 21 [2024-11-18 14:37:43,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763253955] [2024-11-18 14:37:43,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:43,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 14:37:43,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:43,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 14:37:43,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-18 14:37:43,735 INFO L87 Difference]: Start difference. First operand 14786 states and 19226 transitions. Second operand has 21 states, 21 states have (on average 12.095238095238095) internal successors, (254), 21 states have internal predecessors, (254), 8 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2024-11-18 14:37:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:47,460 INFO L93 Difference]: Finished difference Result 36639 states and 47787 transitions. [2024-11-18 14:37:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 14:37:47,461 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.095238095238095) internal successors, (254), 21 states have internal predecessors, (254), 8 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 169 [2024-11-18 14:37:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:47,525 INFO L225 Difference]: With dead ends: 36639 [2024-11-18 14:37:47,525 INFO L226 Difference]: Without dead ends: 22132 [2024-11-18 14:37:47,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=608, Invalid=2362, Unknown=0, NotChecked=0, Total=2970 [2024-11-18 14:37:47,546 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 1127 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 3870 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:47,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 3870 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2475 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 14:37:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22132 states. [2024-11-18 14:37:50,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22132 to 21881. [2024-11-18 14:37:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21881 states, 16098 states have (on average 1.3022114548391104) internal successors, (20963), 16261 states have internal predecessors, (20963), 3738 states have call successors, (3738), 2044 states have call predecessors, (3738), 2044 states have return successors, (3738), 3575 states have call predecessors, (3738), 3738 states have call successors, (3738) [2024-11-18 14:37:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21881 states to 21881 states and 28439 transitions. [2024-11-18 14:37:50,604 INFO L78 Accepts]: Start accepts. Automaton has 21881 states and 28439 transitions. Word has length 169 [2024-11-18 14:37:50,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:50,605 INFO L471 AbstractCegarLoop]: Abstraction has 21881 states and 28439 transitions. [2024-11-18 14:37:50,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.095238095238095) internal successors, (254), 21 states have internal predecessors, (254), 8 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2024-11-18 14:37:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand 21881 states and 28439 transitions. [2024-11-18 14:37:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 14:37:50,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:50,614 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:50,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:50,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:50,815 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:50,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1009942777, now seen corresponding path program 1 times [2024-11-18 14:37:50,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:50,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784717884] [2024-11-18 14:37:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:50,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 14:37:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784717884] [2024-11-18 14:37:51,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784717884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:51,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185894390] [2024-11-18 14:37:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:51,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:51,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:51,616 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 14:37:51,617 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 14:37:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:51,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 14:37:51,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 58 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:51,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 14:37:52,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185894390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:52,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:52,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 20 [2024-11-18 14:37:52,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718915012] [2024-11-18 14:37:52,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:52,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 14:37:52,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:52,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 14:37:52,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:37:52,124 INFO L87 Difference]: Start difference. First operand 21881 states and 28439 transitions. Second operand has 20 states, 20 states have (on average 12.2) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2024-11-18 14:37:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:56,561 INFO L93 Difference]: Finished difference Result 46141 states and 59960 transitions. [2024-11-18 14:37:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 14:37:56,562 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.2) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) Word has length 169 [2024-11-18 14:37:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:56,648 INFO L225 Difference]: With dead ends: 46141 [2024-11-18 14:37:56,648 INFO L226 Difference]: Without dead ends: 24530 [2024-11-18 14:37:56,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1862, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 14:37:56,687 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 1348 mSDsluCounter, 4345 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 4849 SdHoareTripleChecker+Invalid, 2747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:56,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 4849 Invalid, 2747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 14:37:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24530 states. [2024-11-18 14:37:59,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24530 to 21935. [2024-11-18 14:37:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21935 states, 16167 states have (on average 1.3012927568503743) internal successors, (21038), 16331 states have internal predecessors, (21038), 3717 states have call successors, (3717), 2050 states have call predecessors, (3717), 2050 states have return successors, (3717), 3553 states have call predecessors, (3717), 3717 states have call successors, (3717) [2024-11-18 14:37:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21935 states to 21935 states and 28472 transitions. [2024-11-18 14:37:59,979 INFO L78 Accepts]: Start accepts. Automaton has 21935 states and 28472 transitions. Word has length 169 [2024-11-18 14:37:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:59,979 INFO L471 AbstractCegarLoop]: Abstraction has 21935 states and 28472 transitions. [2024-11-18 14:37:59,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.2) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2024-11-18 14:37:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 21935 states and 28472 transitions. [2024-11-18 14:37:59,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 14:37:59,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:59,987 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:00,004 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 14:38:00,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:00,188 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:00,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2121815528, now seen corresponding path program 1 times [2024-11-18 14:38:00,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:00,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023406466] [2024-11-18 14:38:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:00,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 14:38:00,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:00,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023406466] [2024-11-18 14:38:00,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023406466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:00,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077764655] [2024-11-18 14:38:00,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:00,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:00,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:00,607 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 14:38:00,608 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 14:38:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:00,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 14:38:00,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 71 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:38:01,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 14:38:01,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077764655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:01,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:01,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 18 [2024-11-18 14:38:01,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271239369] [2024-11-18 14:38:01,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:01,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:38:01,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:01,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:38:01,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:38:01,303 INFO L87 Difference]: Start difference. First operand 21935 states and 28472 transitions. Second operand has 18 states, 18 states have (on average 12.5) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2024-11-18 14:38:05,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:05,084 INFO L93 Difference]: Finished difference Result 44909 states and 58348 transitions. [2024-11-18 14:38:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 14:38:05,085 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.5) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 169 [2024-11-18 14:38:05,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:05,175 INFO L225 Difference]: With dead ends: 44909 [2024-11-18 14:38:05,175 INFO L226 Difference]: Without dead ends: 23293 [2024-11-18 14:38:05,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1228, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 14:38:05,222 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 1201 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:05,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 2666 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:38:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23293 states. [2024-11-18 14:38:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23293 to 23193. [2024-11-18 14:38:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23193 states, 17070 states have (on average 1.300117164616286) internal successors, (22193), 17244 states have internal predecessors, (22193), 3950 states have call successors, (3950), 2172 states have call predecessors, (3950), 2172 states have return successors, (3950), 3776 states have call predecessors, (3950), 3950 states have call successors, (3950) [2024-11-18 14:38:08,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23193 states to 23193 states and 30093 transitions. [2024-11-18 14:38:08,845 INFO L78 Accepts]: Start accepts. Automaton has 23193 states and 30093 transitions. Word has length 169 [2024-11-18 14:38:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:08,845 INFO L471 AbstractCegarLoop]: Abstraction has 23193 states and 30093 transitions. [2024-11-18 14:38:08,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.5) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2024-11-18 14:38:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 23193 states and 30093 transitions. [2024-11-18 14:38:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 14:38:08,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:08,851 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:08,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:38:09,055 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,SelfDestructingSolverStorable35 [2024-11-18 14:38:09,056 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:09,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1688086442, now seen corresponding path program 1 times [2024-11-18 14:38:09,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:09,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637593832] [2024-11-18 14:38:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-18 14:38:09,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:09,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637593832] [2024-11-18 14:38:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637593832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:09,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214529845] [2024-11-18 14:38:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:09,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:09,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:09,733 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 14:38:09,734 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 14:38:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:09,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 14:38:09,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:38:09,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 14:38:10,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214529845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:10,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:10,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-18 14:38:10,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339226224] [2024-11-18 14:38:10,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:10,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:38:10,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:38:10,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:38:10,061 INFO L87 Difference]: Start difference. First operand 23193 states and 30093 transitions. Second operand has 14 states, 14 states have (on average 15.5) internal successors, (217), 12 states have internal predecessors, (217), 6 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (41), 8 states have call predecessors, (41), 6 states have call successors, (41) [2024-11-18 14:38:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:13,993 INFO L93 Difference]: Finished difference Result 45810 states and 58537 transitions. [2024-11-18 14:38:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 14:38:13,993 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.5) internal successors, (217), 12 states have internal predecessors, (217), 6 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (41), 8 states have call predecessors, (41), 6 states have call successors, (41) Word has length 169 [2024-11-18 14:38:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:14,068 INFO L225 Difference]: With dead ends: 45810 [2024-11-18 14:38:14,068 INFO L226 Difference]: Without dead ends: 22831 [2024-11-18 14:38:14,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=1342, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 14:38:14,100 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 966 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:14,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 5115 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:38:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22831 states. [2024-11-18 14:38:16,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22831 to 15946. [2024-11-18 14:38:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15946 states, 11867 states have (on average 1.285834667565518) internal successors, (15259), 11993 states have internal predecessors, (15259), 2565 states have call successors, (2565), 1513 states have call predecessors, (2565), 1513 states have return successors, (2565), 2439 states have call predecessors, (2565), 2565 states have call successors, (2565) [2024-11-18 14:38:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15946 states to 15946 states and 20389 transitions. [2024-11-18 14:38:16,520 INFO L78 Accepts]: Start accepts. Automaton has 15946 states and 20389 transitions. Word has length 169 [2024-11-18 14:38:16,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:16,520 INFO L471 AbstractCegarLoop]: Abstraction has 15946 states and 20389 transitions. [2024-11-18 14:38:16,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.5) internal successors, (217), 12 states have internal predecessors, (217), 6 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (41), 8 states have call predecessors, (41), 6 states have call successors, (41) [2024-11-18 14:38:16,520 INFO L276 IsEmpty]: Start isEmpty. Operand 15946 states and 20389 transitions. [2024-11-18 14:38:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 14:38:16,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:16,525 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:16,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:38:16,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-18 14:38:16,725 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:16,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1474885887, now seen corresponding path program 1 times [2024-11-18 14:38:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:16,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816092662] [2024-11-18 14:38:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:16,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-18 14:38:17,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:17,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816092662] [2024-11-18 14:38:17,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816092662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426407935] [2024-11-18 14:38:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:17,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:17,186 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 14:38:17,187 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 14:38:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:17,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-18 14:38:17,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:38:17,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-18 14:38:18,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426407935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:18,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:18,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 29 [2024-11-18 14:38:18,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630869256] [2024-11-18 14:38:18,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:18,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 14:38:18,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:18,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 14:38:18,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2024-11-18 14:38:18,756 INFO L87 Difference]: Start difference. First operand 15946 states and 20389 transitions. Second operand has 29 states, 29 states have (on average 9.413793103448276) internal successors, (273), 29 states have internal predecessors, (273), 10 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 10 states have call predecessors, (43), 10 states have call successors, (43)