./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:22:21,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:22:21,477 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:22:21,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:22:21,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:22:21,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:22:21,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:22:21,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:22:21,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:22:21,504 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:22:21,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:22:21,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:22:21,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:22:21,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:22:21,510 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:22:21,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:22:21,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:22:21,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:22:21,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:22:21,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:22:21,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:22:21,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:22:21,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:22:21,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:22:21,512 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:22:21,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:22:21,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:22:21,512 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:22:21,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:22:21,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:22:21,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:22:21,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:22:21,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:22:21,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:22:21,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:22:21,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:22:21,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:22:21,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:22:21,514 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:22:21,514 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:22:21,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:22:21,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:22:21,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 [2024-11-22 02:22:21,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:22:21,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:22:21,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:22:21,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:22:21,764 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:22:21,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2024-11-22 02:22:23,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:22:23,257 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:22:23,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2024-11-22 02:22:23,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265e1bda1/b4b5393ef5da4551b5e07686dd862b64/FLAGb9716c624 [2024-11-22 02:22:23,282 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265e1bda1/b4b5393ef5da4551b5e07686dd862b64 [2024-11-22 02:22:23,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:22:23,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:22:23,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:22:23,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:22:23,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:22:23,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32204f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23, skipping insertion in model container [2024-11-22 02:22:23,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:22:23,567 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.ufo.UNBOUNDED.pals.c[14680,14693] [2024-11-22 02:22:23,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:22:23,579 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:22:23,642 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.ufo.UNBOUNDED.pals.c[14680,14693] [2024-11-22 02:22:23,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:22:23,662 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:22:23,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23 WrapperNode [2024-11-22 02:22:23,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:22:23,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:22:23,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:22:23,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:22:23,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,711 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 507 [2024-11-22 02:22:23,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:22:23,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:22:23,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:22:23,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:22:23,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,730 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,746 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]. [2024-11-22 02:22:23,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:22:23,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:22:23,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:22:23,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:22:23,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (1/1) ... [2024-11-22 02:22:23,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:22:23,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:23,832 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) [2024-11-22 02:22:23,842 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 [2024-11-22 02:22:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-22 02:22:23,932 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-22 02:22:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:22:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-22 02:22:23,933 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-22 02:22:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-22 02:22:23,933 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-22 02:22:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-11-22 02:22:23,935 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-11-22 02:22:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 02:22:23,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 02:22:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:22:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-22 02:22:23,936 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-22 02:22:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:22:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:22:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-22 02:22:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-22 02:22:24,046 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:22:24,048 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:22:24,483 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-11-22 02:22:24,484 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:22:24,506 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:22:24,508 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 02:22:24,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:22:24 BoogieIcfgContainer [2024-11-22 02:22:24,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:22:24,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:22:24,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:22:24,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:22:24,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:22:23" (1/3) ... [2024-11-22 02:22:24,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4096e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:22:24, skipping insertion in model container [2024-11-22 02:22:24,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:23" (2/3) ... [2024-11-22 02:22:24,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4096e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:22:24, skipping insertion in model container [2024-11-22 02:22:24,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:22:24" (3/3) ... [2024-11-22 02:22:24,517 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2024-11-22 02:22:24,533 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:22:24,533 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:22:24,622 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:22:24,631 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;@47e41718, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:22:24,632 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:22:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 02:22:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 02:22:24,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:24,647 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] [2024-11-22 02:22:24,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:24,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:24,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1699901086, now seen corresponding path program 1 times [2024-11-22 02:22:24,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:24,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635381875] [2024-11-22 02:22:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:22:24,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:24,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635381875] [2024-11-22 02:22:24,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635381875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:24,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:24,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 02:22:24,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067680016] [2024-11-22 02:22:24,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:24,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 02:22:24,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:24,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 02:22:24,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 02:22:24,993 INFO L87 Difference]: Start difference. First operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) 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) [2024-11-22 02:22:25,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:25,034 INFO L93 Difference]: Finished difference Result 340 states and 557 transitions. [2024-11-22 02:22:25,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 02:22:25,038 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 [2024-11-22 02:22:25,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:25,048 INFO L225 Difference]: With dead ends: 340 [2024-11-22 02:22:25,048 INFO L226 Difference]: Without dead ends: 176 [2024-11-22 02:22:25,052 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 [2024-11-22 02:22:25,055 INFO L432 NwaCegarLoop]: 273 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, 273 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 [2024-11-22 02:22:25,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-22 02:22:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-22 02:22:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.5401459854014599) internal successors, (211), 138 states have internal predecessors, (211), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 02:22:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 273 transitions. [2024-11-22 02:22:25,099 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 273 transitions. Word has length 28 [2024-11-22 02:22:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:25,100 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 273 transitions. [2024-11-22 02:22:25,100 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) [2024-11-22 02:22:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 273 transitions. [2024-11-22 02:22:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 02:22:25,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:25,101 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] [2024-11-22 02:22:25,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:22:25,102 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:25,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1918755804, now seen corresponding path program 1 times [2024-11-22 02:22:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067617314] [2024-11-22 02:22:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:22:25,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:25,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067617314] [2024-11-22 02:22:25,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067617314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:25,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:25,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:22:25,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54547030] [2024-11-22 02:22:25,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:25,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:22:25,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:25,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:22:25,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:22:25,301 INFO L87 Difference]: Start difference. First operand 176 states and 273 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) [2024-11-22 02:22:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:25,373 INFO L93 Difference]: Finished difference Result 338 states and 520 transitions. [2024-11-22 02:22:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:22:25,374 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 [2024-11-22 02:22:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:25,375 INFO L225 Difference]: With dead ends: 338 [2024-11-22 02:22:25,375 INFO L226 Difference]: Without dead ends: 176 [2024-11-22 02:22:25,376 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 [2024-11-22 02:22:25,377 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:25,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1323 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-22 02:22:25,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-22 02:22:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.4525547445255473) internal successors, (199), 138 states have internal predecessors, (199), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 02:22:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 261 transitions. [2024-11-22 02:22:25,392 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 261 transitions. Word has length 28 [2024-11-22 02:22:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:25,392 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 261 transitions. [2024-11-22 02:22:25,392 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) [2024-11-22 02:22:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 261 transitions. [2024-11-22 02:22:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-22 02:22:25,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:25,393 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] [2024-11-22 02:22:25,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:22:25,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:25,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:25,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1355709569, now seen corresponding path program 1 times [2024-11-22 02:22:25,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:25,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677894126] [2024-11-22 02:22:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:25,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:22:25,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677894126] [2024-11-22 02:22:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677894126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:25,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:25,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64592998] [2024-11-22 02:22:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:25,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:25,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:25,632 INFO L87 Difference]: Start difference. First operand 176 states and 261 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) [2024-11-22 02:22:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:25,680 INFO L93 Difference]: Finished difference Result 339 states and 512 transitions. [2024-11-22 02:22:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:25,680 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 [2024-11-22 02:22:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:25,682 INFO L225 Difference]: With dead ends: 339 [2024-11-22 02:22:25,682 INFO L226 Difference]: Without dead ends: 180 [2024-11-22 02:22:25,683 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 [2024-11-22 02:22:25,684 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 3 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 755 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 [2024-11-22 02:22:25,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 755 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:25,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-22 02:22:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-22 02:22:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.4428571428571428) internal successors, (202), 141 states have internal predecessors, (202), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 02:22:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2024-11-22 02:22:25,696 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 39 [2024-11-22 02:22:25,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:25,697 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2024-11-22 02:22:25,697 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) [2024-11-22 02:22:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2024-11-22 02:22:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-22 02:22:25,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:25,698 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] [2024-11-22 02:22:25,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 02:22:25,698 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:25,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2086587661, now seen corresponding path program 1 times [2024-11-22 02:22:25,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:25,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110521343] [2024-11-22 02:22:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:25,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:25,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:25,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110521343] [2024-11-22 02:22:25,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110521343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:25,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:25,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:22:25,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470556671] [2024-11-22 02:22:25,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:25,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:22:25,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:22:25,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:25,786 INFO L87 Difference]: Start difference. First operand 180 states and 264 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) [2024-11-22 02:22:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:25,822 INFO L93 Difference]: Finished difference Result 494 states and 735 transitions. [2024-11-22 02:22:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:22:25,823 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 [2024-11-22 02:22:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:25,826 INFO L225 Difference]: With dead ends: 494 [2024-11-22 02:22:25,826 INFO L226 Difference]: Without dead ends: 331 [2024-11-22 02:22:25,827 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 [2024-11-22 02:22:25,829 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 212 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 523 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 [2024-11-22 02:22:25,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 523 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:25,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-22 02:22:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2024-11-22 02:22:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 249 states have (on average 1.461847389558233) internal successors, (364), 251 states have internal predecessors, (364), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 02:22:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 484 transitions. [2024-11-22 02:22:25,853 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 484 transitions. Word has length 55 [2024-11-22 02:22:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:25,854 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 484 transitions. [2024-11-22 02:22:25,854 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) [2024-11-22 02:22:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 484 transitions. [2024-11-22 02:22:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 02:22:25,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:25,855 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] [2024-11-22 02:22:25,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 02:22:25,856 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:25,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash 651939805, now seen corresponding path program 1 times [2024-11-22 02:22:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:25,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176986397] [2024-11-22 02:22:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:25,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:25,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:25,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176986397] [2024-11-22 02:22:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176986397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:25,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:25,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:22:25,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040795134] [2024-11-22 02:22:25,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:25,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:22:25,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:22:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:25,938 INFO L87 Difference]: Start difference. First operand 326 states and 484 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) [2024-11-22 02:22:25,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:25,988 INFO L93 Difference]: Finished difference Result 917 states and 1373 transitions. [2024-11-22 02:22:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:22:25,988 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 [2024-11-22 02:22:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:25,994 INFO L225 Difference]: With dead ends: 917 [2024-11-22 02:22:25,994 INFO L226 Difference]: Without dead ends: 608 [2024-11-22 02:22:25,995 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 [2024-11-22 02:22:25,996 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 214 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 545 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 [2024-11-22 02:22:25,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 545 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-22 02:22:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2024-11-22 02:22:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 453 states have (on average 1.4724061810154525) internal successors, (667), 457 states have internal predecessors, (667), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-22 02:22:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 901 transitions. [2024-11-22 02:22:26,069 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 901 transitions. Word has length 56 [2024-11-22 02:22:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:26,069 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 901 transitions. [2024-11-22 02:22:26,070 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) [2024-11-22 02:22:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 901 transitions. [2024-11-22 02:22:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 02:22:26,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:26,075 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] [2024-11-22 02:22:26,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 02:22:26,076 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:26,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:26,077 INFO L85 PathProgramCache]: Analyzing trace with hash -627923873, now seen corresponding path program 1 times [2024-11-22 02:22:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:26,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689345721] [2024-11-22 02:22:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689345721] [2024-11-22 02:22:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689345721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:26,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:26,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:22:26,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411878421] [2024-11-22 02:22:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:26,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:22:26,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:22:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:26,221 INFO L87 Difference]: Start difference. First operand 602 states and 901 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) [2024-11-22 02:22:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:26,398 INFO L93 Difference]: Finished difference Result 1291 states and 1928 transitions. [2024-11-22 02:22:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:26,398 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 [2024-11-22 02:22:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:26,405 INFO L225 Difference]: With dead ends: 1291 [2024-11-22 02:22:26,405 INFO L226 Difference]: Without dead ends: 706 [2024-11-22 02:22:26,407 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 [2024-11-22 02:22:26,409 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 368 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:26,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 669 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-22 02:22:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 690. [2024-11-22 02:22:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 528 states have (on average 1.456439393939394) internal successors, (769), 531 states have internal predecessors, (769), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1017 transitions. [2024-11-22 02:22:26,456 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1017 transitions. Word has length 56 [2024-11-22 02:22:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:26,457 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1017 transitions. [2024-11-22 02:22:26,457 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) [2024-11-22 02:22:26,457 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1017 transitions. [2024-11-22 02:22:26,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-22 02:22:26,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:26,462 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] [2024-11-22 02:22:26,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 02:22:26,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:26,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:26,463 INFO L85 PathProgramCache]: Analyzing trace with hash 707313810, now seen corresponding path program 1 times [2024-11-22 02:22:26,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:26,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956149555] [2024-11-22 02:22:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:26,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:26,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:26,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956149555] [2024-11-22 02:22:26,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956149555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:26,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:26,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:22:26,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607069264] [2024-11-22 02:22:26,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:26,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:22:26,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:26,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:22:26,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:26,588 INFO L87 Difference]: Start difference. First operand 690 states and 1017 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) [2024-11-22 02:22:26,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:26,775 INFO L93 Difference]: Finished difference Result 1295 states and 1928 transitions. [2024-11-22 02:22:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:26,776 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 [2024-11-22 02:22:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:26,780 INFO L225 Difference]: With dead ends: 1295 [2024-11-22 02:22:26,781 INFO L226 Difference]: Without dead ends: 710 [2024-11-22 02:22:26,782 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 [2024-11-22 02:22:26,783 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 368 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:26,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 669 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:26,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-22 02:22:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 698. [2024-11-22 02:22:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4496268656716418) internal successors, (777), 539 states have internal predecessors, (777), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1025 transitions. [2024-11-22 02:22:26,825 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1025 transitions. Word has length 57 [2024-11-22 02:22:26,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:26,825 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1025 transitions. [2024-11-22 02:22:26,825 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) [2024-11-22 02:22:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1025 transitions. [2024-11-22 02:22:26,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 02:22:26,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:26,827 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] [2024-11-22 02:22:26,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 02:22:26,827 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:26,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1187610108, now seen corresponding path program 1 times [2024-11-22 02:22:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:26,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211091319] [2024-11-22 02:22:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:26,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:26,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211091319] [2024-11-22 02:22:26,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211091319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:26,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:26,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:26,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465226915] [2024-11-22 02:22:26,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:26,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:26,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:26,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:26,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:26,939 INFO L87 Difference]: Start difference. First operand 698 states and 1025 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) [2024-11-22 02:22:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:27,058 INFO L93 Difference]: Finished difference Result 1283 states and 1908 transitions. [2024-11-22 02:22:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:27,058 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 [2024-11-22 02:22:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:27,063 INFO L225 Difference]: With dead ends: 1283 [2024-11-22 02:22:27,063 INFO L226 Difference]: Without dead ends: 698 [2024-11-22 02:22:27,064 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 [2024-11-22 02:22:27,065 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 61 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:27,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 663 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-22 02:22:27,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2024-11-22 02:22:27,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4421641791044777) internal successors, (773), 539 states have internal predecessors, (773), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1021 transitions. [2024-11-22 02:22:27,103 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1021 transitions. Word has length 59 [2024-11-22 02:22:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:27,104 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1021 transitions. [2024-11-22 02:22:27,104 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) [2024-11-22 02:22:27,104 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1021 transitions. [2024-11-22 02:22:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 02:22:27,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:27,106 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] [2024-11-22 02:22:27,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 02:22:27,106 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:27,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1980797779, now seen corresponding path program 1 times [2024-11-22 02:22:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:27,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141896523] [2024-11-22 02:22:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:27,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141896523] [2024-11-22 02:22:27,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141896523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:27,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:27,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:27,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290847009] [2024-11-22 02:22:27,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:27,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:27,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:27,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:27,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:27,276 INFO L87 Difference]: Start difference. First operand 698 states and 1021 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) [2024-11-22 02:22:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:27,322 INFO L93 Difference]: Finished difference Result 1303 states and 1932 transitions. [2024-11-22 02:22:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:27,322 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 [2024-11-22 02:22:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:27,326 INFO L225 Difference]: With dead ends: 1303 [2024-11-22 02:22:27,326 INFO L226 Difference]: Without dead ends: 718 [2024-11-22 02:22:27,328 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 [2024-11-22 02:22:27,329 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 4 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 767 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 [2024-11-22 02:22:27,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:27,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-22 02:22:27,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2024-11-22 02:22:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 552 states have (on average 1.4293478260869565) internal successors, (789), 555 states have internal predecessors, (789), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1037 transitions. [2024-11-22 02:22:27,361 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1037 transitions. Word has length 60 [2024-11-22 02:22:27,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:27,362 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1037 transitions. [2024-11-22 02:22:27,362 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) [2024-11-22 02:22:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1037 transitions. [2024-11-22 02:22:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 02:22:27,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:27,363 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] [2024-11-22 02:22:27,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 02:22:27,363 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:27,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:27,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1474712019, now seen corresponding path program 1 times [2024-11-22 02:22:27,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:27,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611874736] [2024-11-22 02:22:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:27,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611874736] [2024-11-22 02:22:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611874736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:27,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:27,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003445921] [2024-11-22 02:22:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:27,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:27,485 INFO L87 Difference]: Start difference. First operand 718 states and 1037 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) [2024-11-22 02:22:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:27,551 INFO L93 Difference]: Finished difference Result 1343 states and 1976 transitions. [2024-11-22 02:22:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:27,552 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 [2024-11-22 02:22:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:27,556 INFO L225 Difference]: With dead ends: 1343 [2024-11-22 02:22:27,556 INFO L226 Difference]: Without dead ends: 738 [2024-11-22 02:22:27,558 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 [2024-11-22 02:22:27,558 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 4 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 753 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 [2024-11-22 02:22:27,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:27,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-22 02:22:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2024-11-22 02:22:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 568 states have (on average 1.4172535211267605) internal successors, (805), 571 states have internal predecessors, (805), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1053 transitions. [2024-11-22 02:22:27,612 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1053 transitions. Word has length 68 [2024-11-22 02:22:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:27,612 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1053 transitions. [2024-11-22 02:22:27,612 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) [2024-11-22 02:22:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1053 transitions. [2024-11-22 02:22:27,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 02:22:27,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:27,613 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] [2024-11-22 02:22:27,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 02:22:27,613 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:27,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash -799213667, now seen corresponding path program 1 times [2024-11-22 02:22:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:27,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379278948] [2024-11-22 02:22:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:27,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:27,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:27,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379278948] [2024-11-22 02:22:27,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379278948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:27,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:27,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:27,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496843375] [2024-11-22 02:22:27,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:27,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:27,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:27,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:27,759 INFO L87 Difference]: Start difference. First operand 738 states and 1053 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) [2024-11-22 02:22:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:27,812 INFO L93 Difference]: Finished difference Result 1379 states and 1992 transitions. [2024-11-22 02:22:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:27,812 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 [2024-11-22 02:22:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:27,816 INFO L225 Difference]: With dead ends: 1379 [2024-11-22 02:22:27,816 INFO L226 Difference]: Without dead ends: 754 [2024-11-22 02:22:27,818 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 [2024-11-22 02:22:27,819 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 3 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 763 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 [2024-11-22 02:22:27,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 763 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-22 02:22:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-11-22 02:22:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 580 states have (on average 1.4086206896551725) internal successors, (817), 583 states have internal predecessors, (817), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1065 transitions. [2024-11-22 02:22:27,853 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1065 transitions. Word has length 76 [2024-11-22 02:22:27,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:27,854 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1065 transitions. [2024-11-22 02:22:27,854 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) [2024-11-22 02:22:27,854 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1065 transitions. [2024-11-22 02:22:27,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 02:22:27,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:27,855 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] [2024-11-22 02:22:27,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 02:22:27,855 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:27,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1597245636, now seen corresponding path program 1 times [2024-11-22 02:22:27,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:27,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664882243] [2024-11-22 02:22:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:27,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:28,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664882243] [2024-11-22 02:22:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664882243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:28,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:28,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809074366] [2024-11-22 02:22:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:28,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:28,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:28,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:28,010 INFO L87 Difference]: Start difference. First operand 754 states and 1065 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) [2024-11-22 02:22:28,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:28,073 INFO L93 Difference]: Finished difference Result 1415 states and 2032 transitions. [2024-11-22 02:22:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:28,074 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 [2024-11-22 02:22:28,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:28,079 INFO L225 Difference]: With dead ends: 1415 [2024-11-22 02:22:28,079 INFO L226 Difference]: Without dead ends: 774 [2024-11-22 02:22:28,081 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 [2024-11-22 02:22:28,081 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 4 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 753 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 [2024-11-22 02:22:28,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:28,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2024-11-22 02:22:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2024-11-22 02:22:28,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 596 states have (on average 1.3976510067114094) internal successors, (833), 599 states have internal predecessors, (833), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1081 transitions. [2024-11-22 02:22:28,117 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1081 transitions. Word has length 76 [2024-11-22 02:22:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:28,118 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 1081 transitions. [2024-11-22 02:22:28,118 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) [2024-11-22 02:22:28,118 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1081 transitions. [2024-11-22 02:22:28,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-22 02:22:28,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:28,121 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] [2024-11-22 02:22:28,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 02:22:28,122 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:28,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash 837268772, now seen corresponding path program 1 times [2024-11-22 02:22:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:28,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227407741] [2024-11-22 02:22:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:28,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:28,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227407741] [2024-11-22 02:22:28,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227407741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:28,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:28,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:28,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377271031] [2024-11-22 02:22:28,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:28,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:28,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:28,296 INFO L87 Difference]: Start difference. First operand 774 states and 1081 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) [2024-11-22 02:22:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:28,370 INFO L93 Difference]: Finished difference Result 1459 states and 2060 transitions. [2024-11-22 02:22:28,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:28,371 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 [2024-11-22 02:22:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:28,375 INFO L225 Difference]: With dead ends: 1459 [2024-11-22 02:22:28,375 INFO L226 Difference]: Without dead ends: 798 [2024-11-22 02:22:28,377 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 [2024-11-22 02:22:28,378 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 5 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 765 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 [2024-11-22 02:22:28,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 765 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:28,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-22 02:22:28,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2024-11-22 02:22:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 616 states have (on average 1.3847402597402598) internal successors, (853), 619 states have internal predecessors, (853), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1101 transitions. [2024-11-22 02:22:28,421 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1101 transitions. Word has length 84 [2024-11-22 02:22:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:28,421 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1101 transitions. [2024-11-22 02:22:28,422 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) [2024-11-22 02:22:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1101 transitions. [2024-11-22 02:22:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-22 02:22:28,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:28,424 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] [2024-11-22 02:22:28,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 02:22:28,424 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:28,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:28,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1610117125, now seen corresponding path program 1 times [2024-11-22 02:22:28,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:28,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714698857] [2024-11-22 02:22:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:28,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 02:22:28,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:28,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714698857] [2024-11-22 02:22:28,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714698857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:28,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:28,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:28,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538908259] [2024-11-22 02:22:28,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:28,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:28,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:28,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:28,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:28,926 INFO L87 Difference]: Start difference. First operand 798 states and 1101 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) [2024-11-22 02:22:29,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:29,164 INFO L93 Difference]: Finished difference Result 2053 states and 2823 transitions. [2024-11-22 02:22:29,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:22:29,165 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 [2024-11-22 02:22:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:29,171 INFO L225 Difference]: With dead ends: 2053 [2024-11-22 02:22:29,171 INFO L226 Difference]: Without dead ends: 1368 [2024-11-22 02:22:29,172 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 [2024-11-22 02:22:29,173 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 196 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:29,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1476 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:29,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2024-11-22 02:22:29,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1082. [2024-11-22 02:22:29,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 827 states have (on average 1.3724304715840387) internal successors, (1135), 832 states have internal predecessors, (1135), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-22 02:22:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1479 transitions. [2024-11-22 02:22:29,229 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1479 transitions. Word has length 87 [2024-11-22 02:22:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:29,229 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1479 transitions. [2024-11-22 02:22:29,229 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) [2024-11-22 02:22:29,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1479 transitions. [2024-11-22 02:22:29,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 02:22:29,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:29,230 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] [2024-11-22 02:22:29,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 02:22:29,231 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:29,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:29,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1820782171, now seen corresponding path program 1 times [2024-11-22 02:22:29,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:29,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801904243] [2024-11-22 02:22:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:29,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 02:22:29,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:29,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801904243] [2024-11-22 02:22:29,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801904243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:29,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:29,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:29,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819427217] [2024-11-22 02:22:29,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:29,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:29,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:29,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:29,373 INFO L87 Difference]: Start difference. First operand 1082 states and 1479 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) [2024-11-22 02:22:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:29,439 INFO L93 Difference]: Finished difference Result 2007 states and 2768 transitions. [2024-11-22 02:22:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:29,439 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 [2024-11-22 02:22:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:29,445 INFO L225 Difference]: With dead ends: 2007 [2024-11-22 02:22:29,445 INFO L226 Difference]: Without dead ends: 1106 [2024-11-22 02:22:29,447 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 [2024-11-22 02:22:29,448 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 3 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 763 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 [2024-11-22 02:22:29,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 763 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:29,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2024-11-22 02:22:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2024-11-22 02:22:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 845 states have (on average 1.3644970414201183) internal successors, (1153), 850 states have internal predecessors, (1153), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-22 02:22:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1497 transitions. [2024-11-22 02:22:29,517 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1497 transitions. Word has length 91 [2024-11-22 02:22:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:29,518 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 1497 transitions. [2024-11-22 02:22:29,518 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) [2024-11-22 02:22:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1497 transitions. [2024-11-22 02:22:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-22 02:22:29,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:29,519 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] [2024-11-22 02:22:29,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 02:22:29,519 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:29,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1723609181, now seen corresponding path program 1 times [2024-11-22 02:22:29,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:29,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626596951] [2024-11-22 02:22:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:29,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:22:29,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:29,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626596951] [2024-11-22 02:22:29,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626596951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:29,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739965457] [2024-11-22 02:22:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:29,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:29,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:29,822 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) [2024-11-22 02:22:29,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:22:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:29,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 02:22:29,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 02:22:30,084 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 02:22:30,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739965457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:30,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 02:22:30,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-22 02:22:30,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359297626] [2024-11-22 02:22:30,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:30,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:22:30,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:30,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:22:30,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:22:30,086 INFO L87 Difference]: Start difference. First operand 1106 states and 1497 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 02:22:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:30,282 INFO L93 Difference]: Finished difference Result 2371 states and 3335 transitions. [2024-11-22 02:22:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:22:30,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2024-11-22 02:22:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:30,291 INFO L225 Difference]: With dead ends: 2371 [2024-11-22 02:22:30,292 INFO L226 Difference]: Without dead ends: 1534 [2024-11-22 02:22:30,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:22:30,296 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 139 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:30,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2866 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2024-11-22 02:22:30,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1114. [2024-11-22 02:22:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 849 states have (on average 1.3557126030624265) internal successors, (1151), 856 states have internal predecessors, (1151), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-22 02:22:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1499 transitions. [2024-11-22 02:22:30,364 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1499 transitions. Word has length 90 [2024-11-22 02:22:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:30,364 INFO L471 AbstractCegarLoop]: Abstraction has 1114 states and 1499 transitions. [2024-11-22 02:22:30,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 02:22:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1499 transitions. [2024-11-22 02:22:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 02:22:30,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:30,366 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] [2024-11-22 02:22:30,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 02:22:30,566 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,SelfDestructingSolverStorable15 [2024-11-22 02:22:30,567 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:30,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2094931668, now seen corresponding path program 1 times [2024-11-22 02:22:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:30,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813337390] [2024-11-22 02:22:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:30,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 02:22:30,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:30,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813337390] [2024-11-22 02:22:30,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813337390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:30,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:30,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:30,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100357419] [2024-11-22 02:22:30,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:30,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:30,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:30,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:30,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:30,695 INFO L87 Difference]: Start difference. First operand 1114 states and 1499 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) [2024-11-22 02:22:30,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:30,880 INFO L93 Difference]: Finished difference Result 2010 states and 2716 transitions. [2024-11-22 02:22:30,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:22:30,881 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 [2024-11-22 02:22:30,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:30,887 INFO L225 Difference]: With dead ends: 2010 [2024-11-22 02:22:30,887 INFO L226 Difference]: Without dead ends: 1159 [2024-11-22 02:22:30,889 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 [2024-11-22 02:22:30,889 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 255 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:30,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1485 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-22 02:22:30,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1117. [2024-11-22 02:22:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 863 states have (on average 1.3487833140208574) internal successors, (1164), 875 states have internal predecessors, (1164), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-22 02:22:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1488 transitions. [2024-11-22 02:22:30,968 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1488 transitions. Word has length 93 [2024-11-22 02:22:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:30,969 INFO L471 AbstractCegarLoop]: Abstraction has 1117 states and 1488 transitions. [2024-11-22 02:22:30,969 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) [2024-11-22 02:22:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1488 transitions. [2024-11-22 02:22:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-22 02:22:30,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:30,971 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] [2024-11-22 02:22:30,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 02:22:30,971 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:30,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1811425973, now seen corresponding path program 1 times [2024-11-22 02:22:30,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:30,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109323634] [2024-11-22 02:22:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:30,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 02:22:31,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109323634] [2024-11-22 02:22:31,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109323634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:31,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:31,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:31,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431005122] [2024-11-22 02:22:31,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:31,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:31,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:31,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:31,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:31,477 INFO L87 Difference]: Start difference. First operand 1117 states and 1488 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) [2024-11-22 02:22:31,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:31,655 INFO L93 Difference]: Finished difference Result 1989 states and 2661 transitions. [2024-11-22 02:22:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:22:31,656 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 [2024-11-22 02:22:31,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:31,661 INFO L225 Difference]: With dead ends: 1989 [2024-11-22 02:22:31,661 INFO L226 Difference]: Without dead ends: 1115 [2024-11-22 02:22:31,663 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 [2024-11-22 02:22:31,664 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 150 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:31,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1601 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:31,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2024-11-22 02:22:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1008. [2024-11-22 02:22:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 781 states have (on average 1.3508322663252241) internal successors, (1055), 791 states have internal predecessors, (1055), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-22 02:22:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1345 transitions. [2024-11-22 02:22:31,716 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1345 transitions. Word has length 95 [2024-11-22 02:22:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:31,716 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1345 transitions. [2024-11-22 02:22:31,716 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) [2024-11-22 02:22:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1345 transitions. [2024-11-22 02:22:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 02:22:31,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:31,717 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] [2024-11-22 02:22:31,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 02:22:31,718 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:31,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:31,718 INFO L85 PathProgramCache]: Analyzing trace with hash -375753860, now seen corresponding path program 1 times [2024-11-22 02:22:31,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:31,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45901359] [2024-11-22 02:22:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:31,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:22:32,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:32,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45901359] [2024-11-22 02:22:32,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45901359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:32,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:32,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:32,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573826554] [2024-11-22 02:22:32,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:32,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:32,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:32,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:32,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:32,104 INFO L87 Difference]: Start difference. First operand 1008 states and 1345 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), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:32,442 INFO L93 Difference]: Finished difference Result 1934 states and 2578 transitions. [2024-11-22 02:22:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:22:32,443 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), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 96 [2024-11-22 02:22:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:32,448 INFO L225 Difference]: With dead ends: 1934 [2024-11-22 02:22:32,449 INFO L226 Difference]: Without dead ends: 1099 [2024-11-22 02:22:32,451 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 [2024-11-22 02:22:32,451 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 418 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:32,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1472 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:22:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2024-11-22 02:22:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1046. [2024-11-22 02:22:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 804 states have (on average 1.3296019900497513) internal successors, (1069), 815 states have internal predecessors, (1069), 154 states have call successors, (154), 87 states have call predecessors, (154), 87 states have return successors, (154), 143 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-22 02:22:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1377 transitions. [2024-11-22 02:22:32,538 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1377 transitions. Word has length 96 [2024-11-22 02:22:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:32,538 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1377 transitions. [2024-11-22 02:22:32,538 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), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1377 transitions. [2024-11-22 02:22:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 02:22:32,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:32,539 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] [2024-11-22 02:22:32,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 02:22:32,539 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:32,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1605607307, now seen corresponding path program 1 times [2024-11-22 02:22:32,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:32,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147232087] [2024-11-22 02:22:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:32,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:22:32,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:32,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147232087] [2024-11-22 02:22:32,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147232087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:32,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:32,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:32,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596868094] [2024-11-22 02:22:32,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:32,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:32,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:32,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:32,908 INFO L87 Difference]: Start difference. First operand 1046 states and 1377 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-22 02:22:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:33,316 INFO L93 Difference]: Finished difference Result 2019 states and 2644 transitions. [2024-11-22 02:22:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:22:33,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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 98 [2024-11-22 02:22:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:33,325 INFO L225 Difference]: With dead ends: 2019 [2024-11-22 02:22:33,325 INFO L226 Difference]: Without dead ends: 1159 [2024-11-22 02:22:33,327 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 [2024-11-22 02:22:33,328 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 407 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:33,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1262 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:22:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-22 02:22:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1068. [2024-11-22 02:22:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 818 states have (on average 1.3141809290953546) internal successors, (1075), 830 states have internal predecessors, (1075), 157 states have call successors, (157), 92 states have call predecessors, (157), 92 states have return successors, (157), 145 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-22 02:22:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1389 transitions. [2024-11-22 02:22:33,415 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1389 transitions. Word has length 98 [2024-11-22 02:22:33,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:33,415 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1389 transitions. [2024-11-22 02:22:33,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-22 02:22:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1389 transitions. [2024-11-22 02:22:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-22 02:22:33,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:33,417 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] [2024-11-22 02:22:33,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 02:22:33,417 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:33,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:33,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1784538508, now seen corresponding path program 1 times [2024-11-22 02:22:33,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:33,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849336816] [2024-11-22 02:22:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:33,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849336816] [2024-11-22 02:22:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849336816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:33,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:33,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987524804] [2024-11-22 02:22:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:33,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:33,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:33,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:33,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:33,496 INFO L87 Difference]: Start difference. First operand 1068 states and 1389 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-22 02:22:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:33,680 INFO L93 Difference]: Finished difference Result 2778 states and 3641 transitions. [2024-11-22 02:22:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:33,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 99 [2024-11-22 02:22:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:33,689 INFO L225 Difference]: With dead ends: 2778 [2024-11-22 02:22:33,689 INFO L226 Difference]: Without dead ends: 1974 [2024-11-22 02:22:33,691 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 [2024-11-22 02:22:33,692 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 199 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1151 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 [2024-11-22 02:22:33,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1151 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-11-22 02:22:33,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1793. [2024-11-22 02:22:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1355 states have (on average 1.3151291512915129) internal successors, (1782), 1375 states have internal predecessors, (1782), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-22 02:22:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2342 transitions. [2024-11-22 02:22:33,833 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2342 transitions. Word has length 99 [2024-11-22 02:22:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:33,833 INFO L471 AbstractCegarLoop]: Abstraction has 1793 states and 2342 transitions. [2024-11-22 02:22:33,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-22 02:22:33,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2342 transitions. [2024-11-22 02:22:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-22 02:22:33,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:33,835 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] [2024-11-22 02:22:33,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 02:22:33,835 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:33,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash -599061911, now seen corresponding path program 1 times [2024-11-22 02:22:33,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:33,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104467050] [2024-11-22 02:22:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:33,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104467050] [2024-11-22 02:22:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104467050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:33,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:33,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191713783] [2024-11-22 02:22:33,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:33,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:33,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:33,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:33,927 INFO L87 Difference]: Start difference. First operand 1793 states and 2342 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) [2024-11-22 02:22:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:34,164 INFO L93 Difference]: Finished difference Result 4547 states and 5974 transitions. [2024-11-22 02:22:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:34,165 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 [2024-11-22 02:22:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:34,178 INFO L225 Difference]: With dead ends: 4547 [2024-11-22 02:22:34,178 INFO L226 Difference]: Without dead ends: 3091 [2024-11-22 02:22:34,181 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 [2024-11-22 02:22:34,182 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 207 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1189 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 [2024-11-22 02:22:34,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1189 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2024-11-22 02:22:34,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2814. [2024-11-22 02:22:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2101 states have (on average 1.3055687767729653) internal successors, (2743), 2132 states have internal predecessors, (2743), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2024-11-22 02:22:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3663 transitions. [2024-11-22 02:22:34,385 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3663 transitions. Word has length 101 [2024-11-22 02:22:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:34,385 INFO L471 AbstractCegarLoop]: Abstraction has 2814 states and 3663 transitions. [2024-11-22 02:22:34,386 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) [2024-11-22 02:22:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3663 transitions. [2024-11-22 02:22:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-22 02:22:34,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:34,388 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] [2024-11-22 02:22:34,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 02:22:34,389 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:34,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash 647926777, now seen corresponding path program 1 times [2024-11-22 02:22:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564808364] [2024-11-22 02:22:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564808364] [2024-11-22 02:22:34,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564808364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:34,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:34,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925525885] [2024-11-22 02:22:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:34,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:34,480 INFO L87 Difference]: Start difference. First operand 2814 states and 3663 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) [2024-11-22 02:22:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:34,800 INFO L93 Difference]: Finished difference Result 6570 states and 8593 transitions. [2024-11-22 02:22:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:34,804 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 [2024-11-22 02:22:34,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:34,824 INFO L225 Difference]: With dead ends: 6570 [2024-11-22 02:22:34,824 INFO L226 Difference]: Without dead ends: 4213 [2024-11-22 02:22:34,831 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 [2024-11-22 02:22:34,832 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 200 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1201 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 [2024-11-22 02:22:34,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1201 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2024-11-22 02:22:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4030. [2024-11-22 02:22:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 2993 states have (on average 1.301703975943869) internal successors, (3896), 3037 states have internal predecessors, (3896), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-22 02:22:35,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5240 transitions. [2024-11-22 02:22:35,162 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5240 transitions. Word has length 101 [2024-11-22 02:22:35,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:35,163 INFO L471 AbstractCegarLoop]: Abstraction has 4030 states and 5240 transitions. [2024-11-22 02:22:35,164 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) [2024-11-22 02:22:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5240 transitions. [2024-11-22 02:22:35,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 02:22:35,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:35,166 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] [2024-11-22 02:22:35,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 02:22:35,166 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:35,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1760044486, now seen corresponding path program 1 times [2024-11-22 02:22:35,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:35,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476598156] [2024-11-22 02:22:35,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:35,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:35,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:35,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476598156] [2024-11-22 02:22:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476598156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:35,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:35,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:22:35,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115125435] [2024-11-22 02:22:35,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:35,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:22:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:35,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:22:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:35,217 INFO L87 Difference]: Start difference. First operand 4030 states and 5240 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-11-22 02:22:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:35,506 INFO L93 Difference]: Finished difference Result 7739 states and 10111 transitions. [2024-11-22 02:22:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:22:35,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 [2024-11-22 02:22:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:35,530 INFO L225 Difference]: With dead ends: 7739 [2024-11-22 02:22:35,530 INFO L226 Difference]: Without dead ends: 4063 [2024-11-22 02:22:35,540 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 [2024-11-22 02:22:35,541 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 6 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:35,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 487 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2024-11-22 02:22:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4036. [2024-11-22 02:22:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 2999 states have (on average 1.3011003667889296) internal successors, (3902), 3043 states have internal predecessors, (3902), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-22 02:22:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 5246 transitions. [2024-11-22 02:22:35,840 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 5246 transitions. Word has length 102 [2024-11-22 02:22:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:35,841 INFO L471 AbstractCegarLoop]: Abstraction has 4036 states and 5246 transitions. [2024-11-22 02:22:35,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-11-22 02:22:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 5246 transitions. [2024-11-22 02:22:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 02:22:35,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:35,843 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] [2024-11-22 02:22:35,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 02:22:35,844 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:35,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1930890164, now seen corresponding path program 1 times [2024-11-22 02:22:35,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:35,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865639956] [2024-11-22 02:22:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:35,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865639956] [2024-11-22 02:22:35,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865639956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:35,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:35,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:35,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307349648] [2024-11-22 02:22:35,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:35,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:35,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:35,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:35,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:35,952 INFO L87 Difference]: Start difference. First operand 4036 states and 5246 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-22 02:22:36,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:36,194 INFO L93 Difference]: Finished difference Result 7704 states and 10038 transitions. [2024-11-22 02:22:36,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:36,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 103 [2024-11-22 02:22:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:36,209 INFO L225 Difference]: With dead ends: 7704 [2024-11-22 02:22:36,209 INFO L226 Difference]: Without dead ends: 3744 [2024-11-22 02:22:36,217 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 [2024-11-22 02:22:36,218 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 83 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:36,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 746 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2024-11-22 02:22:36,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3681. [2024-11-22 02:22:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 2727 states have (on average 1.3105977264393105) internal successors, (3574), 2761 states have internal predecessors, (3574), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-22 02:22:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4814 transitions. [2024-11-22 02:22:36,529 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4814 transitions. Word has length 103 [2024-11-22 02:22:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:36,529 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 4814 transitions. [2024-11-22 02:22:36,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-22 02:22:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4814 transitions. [2024-11-22 02:22:36,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-22 02:22:36,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:36,531 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] [2024-11-22 02:22:36,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 02:22:36,532 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:36,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1500264054, now seen corresponding path program 1 times [2024-11-22 02:22:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:36,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909039462] [2024-11-22 02:22:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:36,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:36,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:36,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909039462] [2024-11-22 02:22:36,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909039462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:36,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:36,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:22:36,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977335573] [2024-11-22 02:22:36,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:36,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:22:36,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:36,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:22:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:36,595 INFO L87 Difference]: Start difference. First operand 3681 states and 4814 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) [2024-11-22 02:22:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:36,973 INFO L93 Difference]: Finished difference Result 7232 states and 9498 transitions. [2024-11-22 02:22:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:22:36,973 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 [2024-11-22 02:22:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:36,999 INFO L225 Difference]: With dead ends: 7232 [2024-11-22 02:22:36,999 INFO L226 Difference]: Without dead ends: 3732 [2024-11-22 02:22:37,008 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 [2024-11-22 02:22:37,009 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 6 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:37,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 485 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2024-11-22 02:22:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3691. [2024-11-22 02:22:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2737 states have (on average 1.3094629156010231) internal successors, (3584), 2771 states have internal predecessors, (3584), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-22 02:22:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4824 transitions. [2024-11-22 02:22:37,289 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4824 transitions. Word has length 104 [2024-11-22 02:22:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:37,290 INFO L471 AbstractCegarLoop]: Abstraction has 3691 states and 4824 transitions. [2024-11-22 02:22:37,290 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) [2024-11-22 02:22:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4824 transitions. [2024-11-22 02:22:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-22 02:22:37,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:37,292 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] [2024-11-22 02:22:37,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 02:22:37,292 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:37,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:37,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1445902481, now seen corresponding path program 1 times [2024-11-22 02:22:37,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:37,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131447389] [2024-11-22 02:22:37,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:37,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:37,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:37,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131447389] [2024-11-22 02:22:37,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131447389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:37,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:37,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:37,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668180744] [2024-11-22 02:22:37,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:37,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:37,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:37,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:37,426 INFO L87 Difference]: Start difference. First operand 3691 states and 4824 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) [2024-11-22 02:22:37,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:37,709 INFO L93 Difference]: Finished difference Result 7183 states and 9409 transitions. [2024-11-22 02:22:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:37,710 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 [2024-11-22 02:22:37,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:37,728 INFO L225 Difference]: With dead ends: 7183 [2024-11-22 02:22:37,729 INFO L226 Difference]: Without dead ends: 3611 [2024-11-22 02:22:37,738 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 [2024-11-22 02:22:37,738 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 64 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:37,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 756 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:37,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2024-11-22 02:22:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 2783. [2024-11-22 02:22:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2063 states have (on average 1.303926320891905) internal successors, (2690), 2082 states have internal predecessors, (2690), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2024-11-22 02:22:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3628 transitions. [2024-11-22 02:22:37,982 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3628 transitions. Word has length 104 [2024-11-22 02:22:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:37,982 INFO L471 AbstractCegarLoop]: Abstraction has 2783 states and 3628 transitions. [2024-11-22 02:22:37,982 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) [2024-11-22 02:22:37,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3628 transitions. [2024-11-22 02:22:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 02:22:37,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:37,986 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] [2024-11-22 02:22:37,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 02:22:37,986 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:37,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash 486642331, now seen corresponding path program 1 times [2024-11-22 02:22:37,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572727797] [2024-11-22 02:22:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:37,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:38,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:38,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572727797] [2024-11-22 02:22:38,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572727797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:38,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7188165] [2024-11-22 02:22:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:38,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:38,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:38,661 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) [2024-11-22 02:22:38,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:22:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:38,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 02:22:38,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-22 02:22:38,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-22 02:22:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7188165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:22:39,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:22:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 20 [2024-11-22 02:22:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80042688] [2024-11-22 02:22:39,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:22:39,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 02:22:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 02:22:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:22:39,219 INFO L87 Difference]: Start difference. First operand 2783 states and 3628 transitions. Second operand has 20 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 9 states have call successors, (38), 4 states have call predecessors, (38), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2024-11-22 02:22:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:41,554 INFO L93 Difference]: Finished difference Result 9288 states and 12094 transitions. [2024-11-22 02:22:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-22 02:22:41,554 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 9 states have call successors, (38), 4 states have call predecessors, (38), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) Word has length 153 [2024-11-22 02:22:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:41,583 INFO L225 Difference]: With dead ends: 9288 [2024-11-22 02:22:41,583 INFO L226 Difference]: Without dead ends: 6696 [2024-11-22 02:22:41,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=620, Invalid=4072, Unknown=0, NotChecked=0, Total=4692 [2024-11-22 02:22:41,591 INFO L432 NwaCegarLoop]: 400 mSDtfsCounter, 2266 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 4967 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:41,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 4967 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 02:22:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6696 states. [2024-11-22 02:22:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 5643. [2024-11-22 02:22:42,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5643 states, 4150 states have (on average 1.304578313253012) internal successors, (5414), 4187 states have internal predecessors, (5414), 972 states have call successors, (972), 520 states have call predecessors, (972), 520 states have return successors, (972), 935 states have call predecessors, (972), 972 states have call successors, (972) [2024-11-22 02:22:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5643 states to 5643 states and 7358 transitions. [2024-11-22 02:22:42,262 INFO L78 Accepts]: Start accepts. Automaton has 5643 states and 7358 transitions. Word has length 153 [2024-11-22 02:22:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:42,263 INFO L471 AbstractCegarLoop]: Abstraction has 5643 states and 7358 transitions. [2024-11-22 02:22:42,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 9 states have call successors, (38), 4 states have call predecessors, (38), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2024-11-22 02:22:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5643 states and 7358 transitions. [2024-11-22 02:22:42,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 02:22:42,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:42,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:42,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 02:22:42,474 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,SelfDestructingSolverStorable27 [2024-11-22 02:22:42,475 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:42,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -950230078, now seen corresponding path program 1 times [2024-11-22 02:22:42,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:42,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237898324] [2024-11-22 02:22:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:42,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-22 02:22:43,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:43,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237898324] [2024-11-22 02:22:43,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237898324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:43,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379889902] [2024-11-22 02:22:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:43,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:43,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:43,072 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) [2024-11-22 02:22:43,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:22:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:43,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-22 02:22:43,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 37 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:43,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-22 02:22:43,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379889902] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:43,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 02:22:43,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 17] total 24 [2024-11-22 02:22:43,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437481411] [2024-11-22 02:22:43,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:43,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:22:43,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:43,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:22:43,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-22 02:22:43,661 INFO L87 Difference]: Start difference. First operand 5643 states and 7358 transitions. Second operand has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 02:22:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:43,922 INFO L93 Difference]: Finished difference Result 9923 states and 12992 transitions. [2024-11-22 02:22:43,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:43,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 155 [2024-11-22 02:22:43,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:43,941 INFO L225 Difference]: With dead ends: 9923 [2024-11-22 02:22:43,941 INFO L226 Difference]: Without dead ends: 4448 [2024-11-22 02:22:43,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-22 02:22:43,952 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:43,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1021 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2024-11-22 02:22:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4448. [2024-11-22 02:22:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 3292 states have (on average 1.3049817739975698) internal successors, (4296), 3320 states have internal predecessors, (4296), 751 states have call successors, (751), 404 states have call predecessors, (751), 404 states have return successors, (751), 723 states have call predecessors, (751), 751 states have call successors, (751) [2024-11-22 02:22:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 5798 transitions. [2024-11-22 02:22:44,229 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 5798 transitions. Word has length 155 [2024-11-22 02:22:44,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:44,230 INFO L471 AbstractCegarLoop]: Abstraction has 4448 states and 5798 transitions. [2024-11-22 02:22:44,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 02:22:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 5798 transitions. [2024-11-22 02:22:44,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-22 02:22:44,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:44,235 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] [2024-11-22 02:22:44,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 02:22:44,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-22 02:22:44,435 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:44,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:44,436 INFO L85 PathProgramCache]: Analyzing trace with hash -896873483, now seen corresponding path program 1 times [2024-11-22 02:22:44,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:44,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389845015] [2024-11-22 02:22:44,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:44,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:45,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:45,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389845015] [2024-11-22 02:22:45,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389845015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:45,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947425403] [2024-11-22 02:22:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:45,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:45,201 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) [2024-11-22 02:22:45,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:22:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:45,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-22 02:22:45,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 61 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:45,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:46,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947425403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:22:46,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:22:46,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 26 [2024-11-22 02:22:46,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189244152] [2024-11-22 02:22:46,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:22:46,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 02:22:46,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:46,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 02:22:46,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:22:46,409 INFO L87 Difference]: Start difference. First operand 4448 states and 5798 transitions. Second operand has 26 states, 26 states have (on average 9.461538461538462) internal successors, (246), 26 states have internal predecessors, (246), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-11-22 02:22:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:49,571 INFO L93 Difference]: Finished difference Result 10824 states and 14092 transitions. [2024-11-22 02:22:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-22 02:22:49,572 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.461538461538462) internal successors, (246), 26 states have internal predecessors, (246), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) Word has length 156 [2024-11-22 02:22:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:49,609 INFO L225 Difference]: With dead ends: 10824 [2024-11-22 02:22:49,609 INFO L226 Difference]: Without dead ends: 6629 [2024-11-22 02:22:49,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1609, Invalid=6581, Unknown=0, NotChecked=0, Total=8190 [2024-11-22 02:22:49,620 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 2158 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:49,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 3695 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 02:22:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2024-11-22 02:22:50,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6232. [2024-11-22 02:22:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 4602 states have (on average 1.2970447631464581) internal successors, (5969), 4643 states have internal predecessors, (5969), 1050 states have call successors, (1050), 579 states have call predecessors, (1050), 579 states have return successors, (1050), 1009 states have call predecessors, (1050), 1050 states have call successors, (1050) [2024-11-22 02:22:50,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 8069 transitions. [2024-11-22 02:22:50,374 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 8069 transitions. Word has length 156 [2024-11-22 02:22:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:50,375 INFO L471 AbstractCegarLoop]: Abstraction has 6232 states and 8069 transitions. [2024-11-22 02:22:50,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.461538461538462) internal successors, (246), 26 states have internal predecessors, (246), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-11-22 02:22:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 8069 transitions. [2024-11-22 02:22:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-22 02:22:50,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:50,382 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] [2024-11-22 02:22:50,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 02:22:50,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:50,584 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:50,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1833817774, now seen corresponding path program 1 times [2024-11-22 02:22:50,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:50,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6526556] [2024-11-22 02:22:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:50,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-22 02:22:50,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:50,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6526556] [2024-11-22 02:22:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6526556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:50,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200649991] [2024-11-22 02:22:50,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:50,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:50,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:50,756 INFO L87 Difference]: Start difference. First operand 6232 states and 8069 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-22 02:22:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:51,900 INFO L93 Difference]: Finished difference Result 18294 states and 23745 transitions. [2024-11-22 02:22:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:22:51,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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 158 [2024-11-22 02:22:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:51,946 INFO L225 Difference]: With dead ends: 18294 [2024-11-22 02:22:51,946 INFO L226 Difference]: Without dead ends: 12367 [2024-11-22 02:22:51,960 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 [2024-11-22 02:22:51,960 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 223 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 2568 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 [2024-11-22 02:22:51,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 2568 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:51,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12367 states. [2024-11-22 02:22:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12367 to 8853. [2024-11-22 02:22:52,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8853 states, 6489 states have (on average 1.294960702727693) internal successors, (8403), 6549 states have internal predecessors, (8403), 1539 states have call successors, (1539), 824 states have call predecessors, (1539), 824 states have return successors, (1539), 1479 states have call predecessors, (1539), 1539 states have call successors, (1539) [2024-11-22 02:22:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8853 states to 8853 states and 11481 transitions. [2024-11-22 02:22:52,919 INFO L78 Accepts]: Start accepts. Automaton has 8853 states and 11481 transitions. Word has length 158 [2024-11-22 02:22:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:52,920 INFO L471 AbstractCegarLoop]: Abstraction has 8853 states and 11481 transitions. [2024-11-22 02:22:52,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-22 02:22:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 8853 states and 11481 transitions. [2024-11-22 02:22:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-22 02:22:52,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:52,930 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] [2024-11-22 02:22:52,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-22 02:22:52,930 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:52,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1397411830, now seen corresponding path program 1 times [2024-11-22 02:22:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:52,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353610584] [2024-11-22 02:22:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:52,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:53,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:53,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353610584] [2024-11-22 02:22:53,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353610584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:53,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997238414] [2024-11-22 02:22:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:53,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:53,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:53,728 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) [2024-11-22 02:22:53,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:22:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:53,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-22 02:22:53,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 59 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:54,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:55,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997238414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:22:55,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:22:55,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 29 [2024-11-22 02:22:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643815418] [2024-11-22 02:22:55,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:22:55,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:22:55,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:22:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:22:55,977 INFO L87 Difference]: Start difference. First operand 8853 states and 11481 transitions. Second operand has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 29 states have internal predecessors, (262), 10 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-22 02:22:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:58,745 INFO L93 Difference]: Finished difference Result 18172 states and 23634 transitions. [2024-11-22 02:22:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 02:22:58,745 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 29 states have internal predecessors, (262), 10 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) Word has length 158 [2024-11-22 02:22:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:58,776 INFO L225 Difference]: With dead ends: 18172 [2024-11-22 02:22:58,776 INFO L226 Difference]: Without dead ends: 9624 [2024-11-22 02:22:58,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=405, Invalid=1851, Unknown=0, NotChecked=0, Total=2256 [2024-11-22 02:22:58,789 INFO L432 NwaCegarLoop]: 465 mSDtfsCounter, 847 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:58,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 4253 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 02:22:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2024-11-22 02:22:59,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 9260. [2024-11-22 02:22:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9260 states, 6799 states have (on average 1.2944550669216062) internal successors, (8801), 6862 states have internal predecessors, (8801), 1602 states have call successors, (1602), 858 states have call predecessors, (1602), 858 states have return successors, (1602), 1539 states have call predecessors, (1602), 1602 states have call successors, (1602) [2024-11-22 02:22:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9260 states to 9260 states and 12005 transitions. [2024-11-22 02:22:59,679 INFO L78 Accepts]: Start accepts. Automaton has 9260 states and 12005 transitions. Word has length 158 [2024-11-22 02:22:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:59,680 INFO L471 AbstractCegarLoop]: Abstraction has 9260 states and 12005 transitions. [2024-11-22 02:22:59,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 29 states have internal predecessors, (262), 10 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-22 02:22:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9260 states and 12005 transitions. [2024-11-22 02:22:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 02:22:59,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:59,689 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] [2024-11-22 02:22:59,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:22:59,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:59,889 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:59,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash -747886001, now seen corresponding path program 1 times [2024-11-22 02:22:59,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:59,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90000901] [2024-11-22 02:22:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:59,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:23:00,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:23:00,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90000901] [2024-11-22 02:23:00,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90000901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:23:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995007078] [2024-11-22 02:23:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:00,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:23:00,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:23:00,417 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) [2024-11-22 02:23:00,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:23:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:00,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 02:23:00,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:23:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 66 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:23:00,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:23:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:23:01,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995007078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:23:01,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:23:01,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2024-11-22 02:23:01,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152266655] [2024-11-22 02:23:01,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:23:01,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:23:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:23:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:23:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:23:01,129 INFO L87 Difference]: Start difference. First operand 9260 states and 12005 transitions. Second operand has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-22 02:23:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:23:03,320 INFO L93 Difference]: Finished difference Result 23260 states and 30243 transitions. [2024-11-22 02:23:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 02:23:03,320 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 159 [2024-11-22 02:23:03,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:23:03,370 INFO L225 Difference]: With dead ends: 23260 [2024-11-22 02:23:03,370 INFO L226 Difference]: Without dead ends: 14305 [2024-11-22 02:23:03,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:23:03,387 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 1305 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 02:23:03,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 3058 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 02:23:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14305 states. [2024-11-22 02:23:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14305 to 13110. [2024-11-22 02:23:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13110 states, 9603 states have (on average 1.2983442674164323) internal successors, (12468), 9698 states have internal predecessors, (12468), 2284 states have call successors, (2284), 1222 states have call predecessors, (2284), 1222 states have return successors, (2284), 2189 states have call predecessors, (2284), 2284 states have call successors, (2284) [2024-11-22 02:23:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13110 states to 13110 states and 17036 transitions. [2024-11-22 02:23:04,736 INFO L78 Accepts]: Start accepts. Automaton has 13110 states and 17036 transitions. Word has length 159 [2024-11-22 02:23:04,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:23:04,736 INFO L471 AbstractCegarLoop]: Abstraction has 13110 states and 17036 transitions. [2024-11-22 02:23:04,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-22 02:23:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 13110 states and 17036 transitions. [2024-11-22 02:23:04,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-22 02:23:04,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:23:04,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:23:04,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 02:23:04,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:23:04,951 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:23:04,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:23:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1784161869, now seen corresponding path program 1 times [2024-11-22 02:23:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:23:04,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298810378] [2024-11-22 02:23:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:04,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:23:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:23:05,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:23:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298810378] [2024-11-22 02:23:05,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298810378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:23:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933533311] [2024-11-22 02:23:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:05,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:23:05,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:23:05,459 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) [2024-11-22 02:23:05,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:23:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:05,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 02:23:05,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:23:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:23:05,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:23:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:23:06,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933533311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:23:06,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:23:06,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 18 [2024-11-22 02:23:06,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737933820] [2024-11-22 02:23:06,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:23:06,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:23:06,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:23:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:23:06,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:23:06,183 INFO L87 Difference]: Start difference. First operand 13110 states and 17036 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, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-22 02:23:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:23:09,314 INFO L93 Difference]: Finished difference Result 31996 states and 41741 transitions. [2024-11-22 02:23:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-22 02:23:09,314 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, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 160 [2024-11-22 02:23:09,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:23:09,379 INFO L225 Difference]: With dead ends: 31996 [2024-11-22 02:23:09,379 INFO L226 Difference]: Without dead ends: 19191 [2024-11-22 02:23:09,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=431, Invalid=1731, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 02:23:09,406 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 1047 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 02:23:09,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 2627 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 02:23:09,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19191 states. [2024-11-22 02:23:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19191 to 18940. [2024-11-22 02:23:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18940 states, 13926 states have (on average 1.3018095648427401) internal successors, (18129), 14060 states have internal predecessors, (18129), 3255 states have call successors, (3255), 1758 states have call predecessors, (3255), 1758 states have return successors, (3255), 3121 states have call predecessors, (3255), 3255 states have call successors, (3255) [2024-11-22 02:23:11,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18940 states to 18940 states and 24639 transitions. [2024-11-22 02:23:11,495 INFO L78 Accepts]: Start accepts. Automaton has 18940 states and 24639 transitions. Word has length 160 [2024-11-22 02:23:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:23:11,495 INFO L471 AbstractCegarLoop]: Abstraction has 18940 states and 24639 transitions. [2024-11-22 02:23:11,495 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, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-22 02:23:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 18940 states and 24639 transitions. [2024-11-22 02:23:11,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-22 02:23:11,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:23:11,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:23:11,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 02:23:11,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:23:11,707 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:23:11,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:23:11,707 INFO L85 PathProgramCache]: Analyzing trace with hash 823751420, now seen corresponding path program 1 times [2024-11-22 02:23:11,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:23:11,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306931684] [2024-11-22 02:23:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:11,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:23:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:23:12,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:23:12,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306931684] [2024-11-22 02:23:12,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306931684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:23:12,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880904864] [2024-11-22 02:23:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:12,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:23:12,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:23:12,247 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) [2024-11-22 02:23:12,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:23:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:12,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 02:23:12,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:23:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 02:23:12,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:23:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-22 02:23:12,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880904864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:23:12,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:23:12,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 9] total 25 [2024-11-22 02:23:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896821677] [2024-11-22 02:23:12,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:23:12,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 02:23:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:23:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 02:23:12,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:23:12,796 INFO L87 Difference]: Start difference. First operand 18940 states and 24639 transitions. Second operand has 25 states, 25 states have (on average 8.84) internal successors, (221), 21 states have internal predecessors, (221), 7 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (34), 10 states have call predecessors, (34), 7 states have call successors, (34) [2024-11-22 02:23:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:23:18,727 INFO L93 Difference]: Finished difference Result 51364 states and 66513 transitions. [2024-11-22 02:23:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-22 02:23:18,728 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.84) internal successors, (221), 21 states have internal predecessors, (221), 7 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (34), 10 states have call predecessors, (34), 7 states have call successors, (34) Word has length 160 [2024-11-22 02:23:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:23:18,841 INFO L225 Difference]: With dead ends: 51364 [2024-11-22 02:23:18,842 INFO L226 Difference]: Without dead ends: 32702 [2024-11-22 02:23:18,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=462, Invalid=2844, Unknown=0, NotChecked=0, Total=3306 [2024-11-22 02:23:18,882 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 1909 mSDsluCounter, 4350 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 815 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:23:18,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 4717 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 02:23:18,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32702 states. [2024-11-22 02:23:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32702 to 21770. [2024-11-22 02:23:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21770 states, 15969 states have (on average 1.3005197570292442) internal successors, (20768), 16132 states have internal predecessors, (20768), 3747 states have call successors, (3747), 2053 states have call predecessors, (3747), 2053 states have return successors, (3747), 3584 states have call predecessors, (3747), 3747 states have call successors, (3747) [2024-11-22 02:23:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21770 states to 21770 states and 28262 transitions. [2024-11-22 02:23:22,062 INFO L78 Accepts]: Start accepts. Automaton has 21770 states and 28262 transitions. Word has length 160 [2024-11-22 02:23:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:23:22,062 INFO L471 AbstractCegarLoop]: Abstraction has 21770 states and 28262 transitions. [2024-11-22 02:23:22,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.84) internal successors, (221), 21 states have internal predecessors, (221), 7 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (34), 10 states have call predecessors, (34), 7 states have call successors, (34) [2024-11-22 02:23:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 21770 states and 28262 transitions. [2024-11-22 02:23:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-22 02:23:22,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:23:22,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:23:22,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 02:23:22,273 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,SelfDestructingSolverStorable34 [2024-11-22 02:23:22,274 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:23:22,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:23:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash -523124395, now seen corresponding path program 1 times [2024-11-22 02:23:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:23:22,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351391050] [2024-11-22 02:23:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:23:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-22 02:23:22,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:23:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351391050] [2024-11-22 02:23:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351391050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:23:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656607480] [2024-11-22 02:23:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:22,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:23:22,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:23:22,711 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) [2024-11-22 02:23:22,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:23:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:22,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-22 02:23:22,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:23:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 68 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:23:23,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:23:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-22 02:23:23,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656607480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:23:23,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:23:23,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2024-11-22 02:23:23,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456831150] [2024-11-22 02:23:23,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:23:23,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:23:23,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:23:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:23:23,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:23:23,683 INFO L87 Difference]: Start difference. First operand 21770 states and 28262 transitions. Second operand has 21 states, 21 states have (on average 11.619047619047619) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (32), 9 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-22 02:23:28,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:23:28,800 INFO L93 Difference]: Finished difference Result 48045 states and 62461 transitions. [2024-11-22 02:23:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 02:23:28,801 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.619047619047619) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (32), 9 states have call predecessors, (32), 8 states have call successors, (32) Word has length 168 [2024-11-22 02:23:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:23:28,902 INFO L225 Difference]: With dead ends: 48045 [2024-11-22 02:23:28,903 INFO L226 Difference]: Without dead ends: 26594 [2024-11-22 02:23:28,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1498, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 02:23:28,940 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 1607 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 02:23:28,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 3431 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 02:23:28,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26594 states. [2024-11-22 02:23:32,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26594 to 26368. [2024-11-22 02:23:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26368 states, 19317 states have (on average 1.2997877517212817) internal successors, (25108), 19516 states have internal predecessors, (25108), 4560 states have call successors, (4560), 2490 states have call predecessors, (4560), 2490 states have return successors, (4560), 4361 states have call predecessors, (4560), 4560 states have call successors, (4560) [2024-11-22 02:23:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26368 states to 26368 states and 34228 transitions. [2024-11-22 02:23:32,601 INFO L78 Accepts]: Start accepts. Automaton has 26368 states and 34228 transitions. Word has length 168 [2024-11-22 02:23:32,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:23:32,602 INFO L471 AbstractCegarLoop]: Abstraction has 26368 states and 34228 transitions. [2024-11-22 02:23:32,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.619047619047619) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (32), 9 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-22 02:23:32,602 INFO L276 IsEmpty]: Start isEmpty. Operand 26368 states and 34228 transitions. [2024-11-22 02:23:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-22 02:23:32,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:23:32,610 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] [2024-11-22 02:23:32,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 02:23:32,811 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,SelfDestructingSolverStorable35 [2024-11-22 02:23:32,811 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:23:32,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:23:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1146944991, now seen corresponding path program 1 times [2024-11-22 02:23:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:23:32,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011682752] [2024-11-22 02:23:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:32,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:23:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-22 02:23:33,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:23:33,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011682752] [2024-11-22 02:23:33,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011682752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:23:33,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261345948] [2024-11-22 02:23:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:33,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:23:33,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:23:33,923 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) [2024-11-22 02:23:33,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:23:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:34,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 02:23:34,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:23:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-22 02:23:34,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:23:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-22 02:23:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261345948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:23:34,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:23:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2024-11-22 02:23:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272415056] [2024-11-22 02:23:34,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:23:34,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 02:23:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:23:34,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 02:23:34,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:23:34,263 INFO L87 Difference]: Start difference. First operand 26368 states and 34228 transitions. Second operand has 16 states, 16 states have (on average 12.5) internal successors, (200), 15 states have internal predecessors, (200), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-22 02:23:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:23:39,397 INFO L93 Difference]: Finished difference Result 53010 states and 68728 transitions. [2024-11-22 02:23:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 02:23:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.5) internal successors, (200), 15 states have internal predecessors, (200), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 168 [2024-11-22 02:23:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:23:39,511 INFO L225 Difference]: With dead ends: 53010 [2024-11-22 02:23:39,511 INFO L226 Difference]: Without dead ends: 26856 [2024-11-22 02:23:39,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=241, Invalid=1481, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 02:23:39,553 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 844 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 4960 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 02:23:39,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 4960 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 02:23:39,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26856 states.