./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.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 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:37:04,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:37:04,104 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:37:04,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:37:04,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:37:04,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:37:04,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:37:04,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:37:04,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:37:04,145 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:37:04,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:37:04,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:37:04,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:37:04,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:37:04,150 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:37:04,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:37:04,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:37:04,151 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:37:04,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:37:04,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:37:04,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:37:04,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:37:04,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:37:04,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:37:04,155 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:37:04,155 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:37:04,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:37:04,155 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:37:04,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:37:04,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:37:04,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:37:04,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:37:04,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:04,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:37:04,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:37:04,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:37:04,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:37:04,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:37:04,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:37:04,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:37:04,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:37:04,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:37:04,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df [2024-11-18 14:37:04,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:37:04,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:37:04,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:37:04,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:37:04,366 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:37:04,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:05,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:37:05,943 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:37:05,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:05,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4ffd001/57ac1caadefb454a9e6ea7ba7dc3186d/FLAGa3300c42a [2024-11-18 14:37:06,332 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4ffd001/57ac1caadefb454a9e6ea7ba7dc3186d [2024-11-18 14:37:06,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:37:06,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:37:06,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:06,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:37:06,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:37:06,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54abaf8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06, skipping insertion in model container [2024-11-18 14:37:06,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:37:06,622 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2024-11-18 14:37:06,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:06,666 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:37:06,766 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2024-11-18 14:37:06,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:06,781 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:37:06,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06 WrapperNode [2024-11-18 14:37:06,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:06,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:06,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:37:06,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:37:06,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,823 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 508 [2024-11-18 14:37:06,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:06,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:37:06,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:37:06,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:37:06,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,835 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,852 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:37:06,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:37:06,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:37:06,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:37:06,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:37:06,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (1/1) ... [2024-11-18 14:37:06,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:06,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:37:06,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:37:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-18 14:37:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-18 14:37:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:37:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-18 14:37:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-18 14:37:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-18 14:37:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-18 14:37:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 14:37:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 14:37:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:37:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-18 14:37:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-18 14:37:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:37:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:37:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-18 14:37:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-18 14:37:07,007 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:37:07,008 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:37:07,458 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-18 14:37:07,459 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:37:07,477 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:37:07,478 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:37:07,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:07 BoogieIcfgContainer [2024-11-18 14:37:07,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:37:07,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:37:07,480 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:37:07,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:37:07,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:37:06" (1/3) ... [2024-11-18 14:37:07,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ace05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:07, skipping insertion in model container [2024-11-18 14:37:07,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:06" (2/3) ... [2024-11-18 14:37:07,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ace05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:07, skipping insertion in model container [2024-11-18 14:37:07,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:07" (3/3) ... [2024-11-18 14:37:07,485 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:07,499 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:37:07,499 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:37:07,556 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:37:07,561 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;@34cc0dd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:37:07,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:37:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-18 14:37:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 14:37:07,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:07,573 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:07,574 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:07,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1815111432, now seen corresponding path program 1 times [2024-11-18 14:37:07,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:07,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950223117] [2024-11-18 14:37:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:07,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:07,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:07,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950223117] [2024-11-18 14:37:07,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950223117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:07,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:07,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 14:37:07,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469167707] [2024-11-18 14:37:07,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:07,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:37:07,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:37:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:37:07,888 INFO L87 Difference]: Start difference. First operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:08,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,012 INFO L93 Difference]: Finished difference Result 326 states and 539 transitions. [2024-11-18 14:37:08,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:37:08,015 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-18 14:37:08,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,023 INFO L225 Difference]: With dead ends: 326 [2024-11-18 14:37:08,023 INFO L226 Difference]: Without dead ends: 169 [2024-11-18 14:37:08,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:37:08,030 INFO L432 NwaCegarLoop]: 264 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, 264 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-18 14:37:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-18 14:37:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.5488721804511278) internal successors, (206), 134 states have internal predecessors, (206), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-18 14:37:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 264 transitions. [2024-11-18 14:37:08,109 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 264 transitions. Word has length 28 [2024-11-18 14:37:08,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,109 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 264 transitions. [2024-11-18 14:37:08,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 264 transitions. [2024-11-18 14:37:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 14:37:08,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,112 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:08,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:37:08,112 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1596256714, now seen corresponding path program 1 times [2024-11-18 14:37:08,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394801599] [2024-11-18 14:37:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:08,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394801599] [2024-11-18 14:37:08,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394801599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:08,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454183273] [2024-11-18 14:37:08,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:08,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:08,451 INFO L87 Difference]: Start difference. First operand 169 states and 264 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:08,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,543 INFO L93 Difference]: Finished difference Result 324 states and 502 transitions. [2024-11-18 14:37:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:37:08,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-18 14:37:08,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,548 INFO L225 Difference]: With dead ends: 324 [2024-11-18 14:37:08,548 INFO L226 Difference]: Without dead ends: 169 [2024-11-18 14:37:08,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:08,550 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1278 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-18 14:37:08,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-18 14:37:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.4586466165413534) internal successors, (194), 134 states have internal predecessors, (194), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-18 14:37:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 252 transitions. [2024-11-18 14:37:08,563 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 252 transitions. Word has length 28 [2024-11-18 14:37:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,563 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 252 transitions. [2024-11-18 14:37:08,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 252 transitions. [2024-11-18 14:37:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 14:37:08,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:08,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:37:08,564 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash 187133938, now seen corresponding path program 1 times [2024-11-18 14:37:08,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695055540] [2024-11-18 14:37:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695055540] [2024-11-18 14:37:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695055540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:08,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103254781] [2024-11-18 14:37:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:08,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:08,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:08,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:08,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:08,833 INFO L87 Difference]: Start difference. First operand 169 states and 252 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:08,892 INFO L93 Difference]: Finished difference Result 325 states and 494 transitions. [2024-11-18 14:37:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:08,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-11-18 14:37:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:08,894 INFO L225 Difference]: With dead ends: 325 [2024-11-18 14:37:08,896 INFO L226 Difference]: Without dead ends: 173 [2024-11-18 14:37:08,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:08,898 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 3 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:08,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 728 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:08,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-18 14:37:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-18 14:37:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 136 states have (on average 1.4485294117647058) internal successors, (197), 137 states have internal predecessors, (197), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-18 14:37:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 255 transitions. [2024-11-18 14:37:08,922 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 255 transitions. Word has length 39 [2024-11-18 14:37:08,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:08,922 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 255 transitions. [2024-11-18 14:37:08,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 255 transitions. [2024-11-18 14:37:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 14:37:08,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:08,925 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:08,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:37:08,925 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:08,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1556220768, now seen corresponding path program 1 times [2024-11-18 14:37:08,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:08,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567376214] [2024-11-18 14:37:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:08,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:09,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567376214] [2024-11-18 14:37:09,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567376214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:09,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888411362] [2024-11-18 14:37:09,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:09,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:09,026 INFO L87 Difference]: Start difference. First operand 173 states and 255 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,070 INFO L93 Difference]: Finished difference Result 476 states and 713 transitions. [2024-11-18 14:37:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:09,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2024-11-18 14:37:09,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,074 INFO L225 Difference]: With dead ends: 476 [2024-11-18 14:37:09,074 INFO L226 Difference]: Without dead ends: 320 [2024-11-18 14:37:09,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:09,078 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 208 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:09,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 500 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-18 14:37:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2024-11-18 14:37:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 243 states have (on average 1.4691358024691359) internal successors, (357), 245 states have internal predecessors, (357), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-18 14:37:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 471 transitions. [2024-11-18 14:37:09,123 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 471 transitions. Word has length 55 [2024-11-18 14:37:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,124 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 471 transitions. [2024-11-18 14:37:09,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 471 transitions. [2024-11-18 14:37:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:37:09,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,128 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:09,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:37:09,128 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1976715472, now seen corresponding path program 1 times [2024-11-18 14:37:09,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505606127] [2024-11-18 14:37:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:09,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505606127] [2024-11-18 14:37:09,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505606127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:09,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994030082] [2024-11-18 14:37:09,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:09,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:09,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:09,197 INFO L87 Difference]: Start difference. First operand 315 states and 471 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,246 INFO L93 Difference]: Finished difference Result 887 states and 1337 transitions. [2024-11-18 14:37:09,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:09,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-18 14:37:09,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,255 INFO L225 Difference]: With dead ends: 887 [2024-11-18 14:37:09,256 INFO L226 Difference]: Without dead ends: 589 [2024-11-18 14:37:09,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:09,259 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 204 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:09,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 517 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-18 14:37:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 574. [2024-11-18 14:37:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 432 states have (on average 1.474537037037037) internal successors, (637), 436 states have internal predecessors, (637), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2024-11-18 14:37:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 863 transitions. [2024-11-18 14:37:09,335 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 863 transitions. Word has length 56 [2024-11-18 14:37:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,336 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 863 transitions. [2024-11-18 14:37:09,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 863 transitions. [2024-11-18 14:37:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:37:09,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,342 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:09,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:37:09,342 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1038388146, now seen corresponding path program 1 times [2024-11-18 14:37:09,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119785905] [2024-11-18 14:37:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119785905] [2024-11-18 14:37:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119785905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:09,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056618306] [2024-11-18 14:37:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:09,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:09,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:09,477 INFO L87 Difference]: Start difference. First operand 574 states and 863 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,621 INFO L93 Difference]: Finished difference Result 1224 states and 1839 transitions. [2024-11-18 14:37:09,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:09,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-18 14:37:09,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,625 INFO L225 Difference]: With dead ends: 1224 [2024-11-18 14:37:09,626 INFO L226 Difference]: Without dead ends: 667 [2024-11-18 14:37:09,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:09,628 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 349 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:09,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 642 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-18 14:37:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 651. [2024-11-18 14:37:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 501 states have (on average 1.4610778443113772) internal successors, (732), 504 states have internal predecessors, (732), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 966 transitions. [2024-11-18 14:37:09,673 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 966 transitions. Word has length 56 [2024-11-18 14:37:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:09,673 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 966 transitions. [2024-11-18 14:37:09,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 966 transitions. [2024-11-18 14:37:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:09,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:09,675 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:09,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:37:09,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:09,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1231779263, now seen corresponding path program 1 times [2024-11-18 14:37:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533014154] [2024-11-18 14:37:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:09,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533014154] [2024-11-18 14:37:09,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533014154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:09,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:09,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85687012] [2024-11-18 14:37:09,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:09,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:09,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:09,787 INFO L87 Difference]: Start difference. First operand 651 states and 966 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:09,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:09,953 INFO L93 Difference]: Finished difference Result 1228 states and 1839 transitions. [2024-11-18 14:37:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:09,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-18 14:37:09,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:09,961 INFO L225 Difference]: With dead ends: 1228 [2024-11-18 14:37:09,961 INFO L226 Difference]: Without dead ends: 671 [2024-11-18 14:37:09,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:09,964 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 349 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:09,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 642 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-18 14:37:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 659. [2024-11-18 14:37:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4538310412573674) internal successors, (740), 512 states have internal predecessors, (740), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 974 transitions. [2024-11-18 14:37:10,003 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 974 transitions. Word has length 57 [2024-11-18 14:37:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,003 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 974 transitions. [2024-11-18 14:37:10,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 974 transitions. [2024-11-18 14:37:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:37:10,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,005 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:37:10,006 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash 496428017, now seen corresponding path program 1 times [2024-11-18 14:37:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518892788] [2024-11-18 14:37:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:10,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518892788] [2024-11-18 14:37:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518892788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:10,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790002849] [2024-11-18 14:37:10,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:10,132 INFO L87 Difference]: Start difference. First operand 659 states and 974 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:10,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,247 INFO L93 Difference]: Finished difference Result 1216 states and 1819 transitions. [2024-11-18 14:37:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:10,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-18 14:37:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,252 INFO L225 Difference]: With dead ends: 1216 [2024-11-18 14:37:10,252 INFO L226 Difference]: Without dead ends: 659 [2024-11-18 14:37:10,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:10,254 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 52 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:10,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 640 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-18 14:37:10,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2024-11-18 14:37:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4459724950884087) internal successors, (736), 512 states have internal predecessors, (736), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 970 transitions. [2024-11-18 14:37:10,287 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 970 transitions. Word has length 59 [2024-11-18 14:37:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,287 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 970 transitions. [2024-11-18 14:37:10,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:37:10,288 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 970 transitions. [2024-11-18 14:37:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 14:37:10,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,290 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:37:10,290 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash -906823040, now seen corresponding path program 1 times [2024-11-18 14:37:10,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984590494] [2024-11-18 14:37:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:10,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984590494] [2024-11-18 14:37:10,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984590494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:10,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154829972] [2024-11-18 14:37:10,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:10,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:10,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:10,482 INFO L87 Difference]: Start difference. First operand 659 states and 970 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 14:37:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,531 INFO L93 Difference]: Finished difference Result 1236 states and 1843 transitions. [2024-11-18 14:37:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:10,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2024-11-18 14:37:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,535 INFO L225 Difference]: With dead ends: 1236 [2024-11-18 14:37:10,535 INFO L226 Difference]: Without dead ends: 679 [2024-11-18 14:37:10,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:10,537 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 4 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:10,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-18 14:37:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2024-11-18 14:37:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 525 states have (on average 1.4323809523809523) internal successors, (752), 528 states have internal predecessors, (752), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 986 transitions. [2024-11-18 14:37:10,566 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 986 transitions. Word has length 60 [2024-11-18 14:37:10,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,566 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 986 transitions. [2024-11-18 14:37:10,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 14:37:10,567 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 986 transitions. [2024-11-18 14:37:10,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:37:10,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,568 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:37:10,568 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1438142618, now seen corresponding path program 1 times [2024-11-18 14:37:10,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943955912] [2024-11-18 14:37:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:10,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943955912] [2024-11-18 14:37:10,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943955912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:10,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086384089] [2024-11-18 14:37:10,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:10,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:10,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:10,686 INFO L87 Difference]: Start difference. First operand 679 states and 986 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:10,740 INFO L93 Difference]: Finished difference Result 1276 states and 1887 transitions. [2024-11-18 14:37:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:10,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2024-11-18 14:37:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:10,744 INFO L225 Difference]: With dead ends: 1276 [2024-11-18 14:37:10,744 INFO L226 Difference]: Without dead ends: 699 [2024-11-18 14:37:10,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:10,746 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 4 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:10,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:10,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-18 14:37:10,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2024-11-18 14:37:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 541 states have (on average 1.4195933456561922) internal successors, (768), 544 states have internal predecessors, (768), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1002 transitions. [2024-11-18 14:37:10,778 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1002 transitions. Word has length 68 [2024-11-18 14:37:10,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:10,778 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 1002 transitions. [2024-11-18 14:37:10,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1002 transitions. [2024-11-18 14:37:10,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:37:10,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,779 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:37:10,780 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,780 INFO L85 PathProgramCache]: Analyzing trace with hash 288384240, now seen corresponding path program 1 times [2024-11-18 14:37:10,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112171482] [2024-11-18 14:37:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:10,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:10,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112171482] [2024-11-18 14:37:10,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112171482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:10,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:10,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:10,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855123467] [2024-11-18 14:37:10,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:10,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:10,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:10,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:10,984 INFO L87 Difference]: Start difference. First operand 699 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,048 INFO L93 Difference]: Finished difference Result 1312 states and 1903 transitions. [2024-11-18 14:37:11,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:11,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-18 14:37:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,051 INFO L225 Difference]: With dead ends: 1312 [2024-11-18 14:37:11,052 INFO L226 Difference]: Without dead ends: 715 [2024-11-18 14:37:11,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:11,053 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 3 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 736 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:11,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-18 14:37:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2024-11-18 14:37:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 553 states have (on average 1.410488245931284) internal successors, (780), 556 states have internal predecessors, (780), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1014 transitions. [2024-11-18 14:37:11,085 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1014 transitions. Word has length 76 [2024-11-18 14:37:11,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,085 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1014 transitions. [2024-11-18 14:37:11,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1014 transitions. [2024-11-18 14:37:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:37:11,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,088 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:11,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:37:11,088 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1610123753, now seen corresponding path program 1 times [2024-11-18 14:37:11,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39572850] [2024-11-18 14:37:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:11,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39572850] [2024-11-18 14:37:11,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39572850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:11,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141409733] [2024-11-18 14:37:11,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:11,233 INFO L87 Difference]: Start difference. First operand 715 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,304 INFO L93 Difference]: Finished difference Result 1348 states and 1943 transitions. [2024-11-18 14:37:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:11,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-18 14:37:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,308 INFO L225 Difference]: With dead ends: 1348 [2024-11-18 14:37:11,308 INFO L226 Difference]: Without dead ends: 735 [2024-11-18 14:37:11,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:11,310 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 4 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-18 14:37:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2024-11-18 14:37:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 569 states have (on average 1.398945518453427) internal successors, (796), 572 states have internal predecessors, (796), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1030 transitions. [2024-11-18 14:37:11,349 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1030 transitions. Word has length 76 [2024-11-18 14:37:11,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,349 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1030 transitions. [2024-11-18 14:37:11,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 14:37:11,349 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1030 transitions. [2024-11-18 14:37:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 14:37:11,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,351 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:11,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:37:11,351 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1718962299, now seen corresponding path program 1 times [2024-11-18 14:37:11,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061015875] [2024-11-18 14:37:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:11,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061015875] [2024-11-18 14:37:11,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061015875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:11,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97044720] [2024-11-18 14:37:11,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:11,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:11,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:11,507 INFO L87 Difference]: Start difference. First operand 735 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,562 INFO L93 Difference]: Finished difference Result 1392 states and 1971 transitions. [2024-11-18 14:37:11,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:11,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2024-11-18 14:37:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,566 INFO L225 Difference]: With dead ends: 1392 [2024-11-18 14:37:11,566 INFO L226 Difference]: Without dead ends: 759 [2024-11-18 14:37:11,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:11,568 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 5 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 738 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2024-11-18 14:37:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2024-11-18 14:37:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 589 states have (on average 1.3853989813242784) internal successors, (816), 592 states have internal predecessors, (816), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-18 14:37:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1050 transitions. [2024-11-18 14:37:11,598 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1050 transitions. Word has length 84 [2024-11-18 14:37:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,599 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1050 transitions. [2024-11-18 14:37:11,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1050 transitions. [2024-11-18 14:37:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 14:37:11,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,601 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:11,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:37:11,601 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,601 INFO L85 PathProgramCache]: Analyzing trace with hash 966027762, now seen corresponding path program 1 times [2024-11-18 14:37:11,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848491246] [2024-11-18 14:37:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:37:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:12,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848491246] [2024-11-18 14:37:12,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848491246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:12,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:12,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540592676] [2024-11-18 14:37:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:12,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:12,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:12,090 INFO L87 Difference]: Start difference. First operand 759 states and 1050 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:37:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:12,326 INFO L93 Difference]: Finished difference Result 1983 states and 2731 transitions. [2024-11-18 14:37:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:12,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2024-11-18 14:37:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:12,331 INFO L225 Difference]: With dead ends: 1983 [2024-11-18 14:37:12,331 INFO L226 Difference]: Without dead ends: 1326 [2024-11-18 14:37:12,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:12,333 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 187 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:12,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1426 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2024-11-18 14:37:12,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 912. [2024-11-18 14:37:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 705 states have (on average 1.374468085106383) internal successors, (969), 709 states have internal predecessors, (969), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-18 14:37:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1251 transitions. [2024-11-18 14:37:12,372 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1251 transitions. Word has length 87 [2024-11-18 14:37:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:12,372 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1251 transitions. [2024-11-18 14:37:12,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:37:12,373 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1251 transitions. [2024-11-18 14:37:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 14:37:12,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:12,373 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:12,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:37:12,373 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:12,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2026376801, now seen corresponding path program 1 times [2024-11-18 14:37:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:12,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568675322] [2024-11-18 14:37:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:37:12,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:12,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568675322] [2024-11-18 14:37:12,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568675322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:12,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:12,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738348720] [2024-11-18 14:37:12,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:12,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:12,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:12,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:12,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:12,469 INFO L87 Difference]: Start difference. First operand 912 states and 1251 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:12,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:12,522 INFO L93 Difference]: Finished difference Result 1697 states and 2351 transitions. [2024-11-18 14:37:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:12,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-11-18 14:37:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:12,526 INFO L225 Difference]: With dead ends: 1697 [2024-11-18 14:37:12,527 INFO L226 Difference]: Without dead ends: 932 [2024-11-18 14:37:12,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:12,528 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 3 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:12,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 736 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:12,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-11-18 14:37:12,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2024-11-18 14:37:12,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 724 states have internal predecessors, (984), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-18 14:37:12,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1266 transitions. [2024-11-18 14:37:12,567 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1266 transitions. Word has length 91 [2024-11-18 14:37:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:12,567 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 1266 transitions. [2024-11-18 14:37:12,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1266 transitions. [2024-11-18 14:37:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 14:37:12,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:12,568 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:12,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:37:12,568 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:12,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:12,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1456343440, now seen corresponding path program 1 times [2024-11-18 14:37:12,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:12,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298221862] [2024-11-18 14:37:12,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:37:12,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:12,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298221862] [2024-11-18 14:37:12,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298221862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:12,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:12,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:12,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621256025] [2024-11-18 14:37:12,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:12,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:12,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:12,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:12,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:12,826 INFO L87 Difference]: Start difference. First operand 932 states and 1266 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:12,956 INFO L93 Difference]: Finished difference Result 1343 states and 1926 transitions. [2024-11-18 14:37:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:37:12,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2024-11-18 14:37:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:12,962 INFO L225 Difference]: With dead ends: 1343 [2024-11-18 14:37:12,962 INFO L226 Difference]: Without dead ends: 1341 [2024-11-18 14:37:12,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:12,963 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 136 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:12,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1979 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-11-18 14:37:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 934. [2024-11-18 14:37:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 725 states have internal predecessors, (984), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-18 14:37:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1268 transitions. [2024-11-18 14:37:13,018 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1268 transitions. Word has length 90 [2024-11-18 14:37:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,018 INFO L471 AbstractCegarLoop]: Abstraction has 934 states and 1268 transitions. [2024-11-18 14:37:13,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1268 transitions. [2024-11-18 14:37:13,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:37:13,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,020 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:37:13,020 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,020 INFO L85 PathProgramCache]: Analyzing trace with hash 914249721, now seen corresponding path program 1 times [2024-11-18 14:37:13,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041837963] [2024-11-18 14:37:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 14:37:13,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041837963] [2024-11-18 14:37:13,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041837963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191325840] [2024-11-18 14:37:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:13,138 INFO L87 Difference]: Start difference. First operand 934 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:37:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,357 INFO L93 Difference]: Finished difference Result 1740 states and 2381 transitions. [2024-11-18 14:37:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:13,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2024-11-18 14:37:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,363 INFO L225 Difference]: With dead ends: 1740 [2024-11-18 14:37:13,364 INFO L226 Difference]: Without dead ends: 994 [2024-11-18 14:37:13,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:13,366 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 236 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1435 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-11-18 14:37:13,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 952. [2024-11-18 14:37:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 743 states have (on average 1.3620457604306864) internal successors, (1012), 752 states have internal predecessors, (1012), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-18 14:37:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1284 transitions. [2024-11-18 14:37:13,430 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1284 transitions. Word has length 93 [2024-11-18 14:37:13,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,431 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1284 transitions. [2024-11-18 14:37:13,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:37:13,431 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1284 transitions. [2024-11-18 14:37:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 14:37:13,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,432 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:37:13,433 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1793206136, now seen corresponding path program 1 times [2024-11-18 14:37:13,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069117981] [2024-11-18 14:37:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:37:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069117981] [2024-11-18 14:37:13,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069117981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:13,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470917463] [2024-11-18 14:37:13,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:13,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:13,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:13,940 INFO L87 Difference]: Start difference. First operand 952 states and 1284 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,103 INFO L93 Difference]: Finished difference Result 1725 states and 2342 transitions. [2024-11-18 14:37:14,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:14,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2024-11-18 14:37:14,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,108 INFO L225 Difference]: With dead ends: 1725 [2024-11-18 14:37:14,108 INFO L226 Difference]: Without dead ends: 951 [2024-11-18 14:37:14,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:14,113 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 131 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:14,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1511 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2024-11-18 14:37:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 941. [2024-11-18 14:37:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 735 states have (on average 1.3605442176870748) internal successors, (1000), 744 states have internal predecessors, (1000), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-18 14:37:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1268 transitions. [2024-11-18 14:37:14,164 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1268 transitions. Word has length 95 [2024-11-18 14:37:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:14,164 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1268 transitions. [2024-11-18 14:37:14,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1268 transitions. [2024-11-18 14:37:14,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 14:37:14,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:14,165 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:14,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:37:14,166 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:14,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:14,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1630829129, now seen corresponding path program 1 times [2024-11-18 14:37:14,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:14,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675084745] [2024-11-18 14:37:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:14,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:37:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675084745] [2024-11-18 14:37:14,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675084745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:14,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:14,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207638911] [2024-11-18 14:37:14,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:14,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:14,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:14,758 INFO L87 Difference]: Start difference. First operand 941 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,083 INFO L93 Difference]: Finished difference Result 1792 states and 2402 transitions. [2024-11-18 14:37:15,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-18 14:37:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,089 INFO L225 Difference]: With dead ends: 1792 [2024-11-18 14:37:15,089 INFO L226 Difference]: Without dead ends: 998 [2024-11-18 14:37:15,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:15,091 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 508 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1185 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:15,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-18 14:37:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 957. [2024-11-18 14:37:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 743 states have (on average 1.3364737550471064) internal successors, (993), 753 states have internal predecessors, (993), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2024-11-18 14:37:15,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1267 transitions. [2024-11-18 14:37:15,159 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1267 transitions. Word has length 96 [2024-11-18 14:37:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:15,160 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1267 transitions. [2024-11-18 14:37:15,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:37:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1267 transitions. [2024-11-18 14:37:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 14:37:15,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:15,162 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:15,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:37:15,162 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1901259188, now seen corresponding path program 1 times [2024-11-18 14:37:15,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364230906] [2024-11-18 14:37:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:15,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364230906] [2024-11-18 14:37:15,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364230906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:15,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261966650] [2024-11-18 14:37:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:15,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:15,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:15,254 INFO L87 Difference]: Start difference. First operand 957 states and 1267 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,388 INFO L93 Difference]: Finished difference Result 2528 states and 3367 transitions. [2024-11-18 14:37:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2024-11-18 14:37:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,397 INFO L225 Difference]: With dead ends: 2528 [2024-11-18 14:37:15,397 INFO L226 Difference]: Without dead ends: 1769 [2024-11-18 14:37:15,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:15,400 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 192 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1106 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2024-11-18 14:37:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1538. [2024-11-18 14:37:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1181 states have (on average 1.3302286198137172) internal successors, (1571), 1197 states have internal predecessors, (1571), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-18 14:37:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2033 transitions. [2024-11-18 14:37:15,527 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2033 transitions. Word has length 97 [2024-11-18 14:37:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:15,527 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2033 transitions. [2024-11-18 14:37:15,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2033 transitions. [2024-11-18 14:37:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 14:37:15,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:15,529 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:15,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:37:15,529 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash -985041855, now seen corresponding path program 1 times [2024-11-18 14:37:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114855076] [2024-11-18 14:37:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:37:15,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114855076] [2024-11-18 14:37:15,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114855076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842828050] [2024-11-18 14:37:15,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:15,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:15,922 INFO L87 Difference]: Start difference. First operand 1538 states and 2033 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:16,542 INFO L93 Difference]: Finished difference Result 3136 states and 4141 transitions. [2024-11-18 14:37:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:16,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2024-11-18 14:37:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:16,552 INFO L225 Difference]: With dead ends: 3136 [2024-11-18 14:37:16,552 INFO L226 Difference]: Without dead ends: 1874 [2024-11-18 14:37:16,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:16,556 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 502 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:16,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1302 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:37:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2024-11-18 14:37:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1563. [2024-11-18 14:37:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1193 states have (on average 1.3235540653813915) internal successors, (1579), 1210 states have internal predecessors, (1579), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-18 14:37:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2057 transitions. [2024-11-18 14:37:16,732 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2057 transitions. Word has length 99 [2024-11-18 14:37:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:16,732 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2057 transitions. [2024-11-18 14:37:16,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2057 transitions. [2024-11-18 14:37:16,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:16,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:16,734 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:16,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:37:16,734 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:16,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash -8868659, now seen corresponding path program 1 times [2024-11-18 14:37:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:16,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803086834] [2024-11-18 14:37:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:16,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803086834] [2024-11-18 14:37:16,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803086834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:16,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:16,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451642654] [2024-11-18 14:37:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:16,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:16,822 INFO L87 Difference]: Start difference. First operand 1563 states and 2057 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:17,051 INFO L93 Difference]: Finished difference Result 3897 states and 5161 transitions. [2024-11-18 14:37:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-18 14:37:17,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:17,062 INFO L225 Difference]: With dead ends: 3897 [2024-11-18 14:37:17,062 INFO L226 Difference]: Without dead ends: 2651 [2024-11-18 14:37:17,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:17,066 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 198 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:17,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2024-11-18 14:37:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2452. [2024-11-18 14:37:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1845 states have (on average 1.313821138211382) internal successors, (2424), 1872 states have internal predecessors, (2424), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-18 14:37:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3212 transitions. [2024-11-18 14:37:17,245 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3212 transitions. Word has length 101 [2024-11-18 14:37:17,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:17,246 INFO L471 AbstractCegarLoop]: Abstraction has 2452 states and 3212 transitions. [2024-11-18 14:37:17,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3212 transitions. [2024-11-18 14:37:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:17,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:17,248 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:17,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:37:17,249 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:17,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash -151110586, now seen corresponding path program 1 times [2024-11-18 14:37:17,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:17,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641688646] [2024-11-18 14:37:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:17,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:17,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:17,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641688646] [2024-11-18 14:37:17,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641688646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:17,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:17,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:17,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944505450] [2024-11-18 14:37:17,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:17,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:17,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:17,343 INFO L87 Difference]: Start difference. First operand 2452 states and 3212 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:17,557 INFO L93 Difference]: Finished difference Result 4705 states and 6188 transitions. [2024-11-18 14:37:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:17,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-18 14:37:17,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:17,571 INFO L225 Difference]: With dead ends: 4705 [2024-11-18 14:37:17,571 INFO L226 Difference]: Without dead ends: 2461 [2024-11-18 14:37:17,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:17,578 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 3 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:17,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 466 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2024-11-18 14:37:17,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2455. [2024-11-18 14:37:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1848 states have (on average 1.3133116883116882) internal successors, (2427), 1875 states have internal predecessors, (2427), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-18 14:37:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3215 transitions. [2024-11-18 14:37:17,858 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3215 transitions. Word has length 101 [2024-11-18 14:37:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:17,859 INFO L471 AbstractCegarLoop]: Abstraction has 2455 states and 3215 transitions. [2024-11-18 14:37:17,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:17,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3215 transitions. [2024-11-18 14:37:17,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:37:17,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:17,861 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:17,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:37:17,861 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:17,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash -341042115, now seen corresponding path program 1 times [2024-11-18 14:37:17,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:17,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265935890] [2024-11-18 14:37:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:17,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:17,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:17,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265935890] [2024-11-18 14:37:17,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265935890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:17,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:17,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717034699] [2024-11-18 14:37:17,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:17,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:17,940 INFO L87 Difference]: Start difference. First operand 2455 states and 3215 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:18,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:18,235 INFO L93 Difference]: Finished difference Result 5826 states and 7668 transitions. [2024-11-18 14:37:18,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:18,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-18 14:37:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:18,254 INFO L225 Difference]: With dead ends: 5826 [2024-11-18 14:37:18,254 INFO L226 Difference]: Without dead ends: 3809 [2024-11-18 14:37:18,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:18,263 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 191 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:18,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1156 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:18,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2024-11-18 14:37:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3376. [2024-11-18 14:37:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2530 states have (on average 1.3094861660079051) internal successors, (3313), 2567 states have internal predecessors, (3313), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2024-11-18 14:37:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4415 transitions. [2024-11-18 14:37:18,498 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4415 transitions. Word has length 101 [2024-11-18 14:37:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:18,498 INFO L471 AbstractCegarLoop]: Abstraction has 3376 states and 4415 transitions. [2024-11-18 14:37:18,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4415 transitions. [2024-11-18 14:37:18,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 14:37:18,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:18,501 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:18,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 14:37:18,502 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:18,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1342850110, now seen corresponding path program 1 times [2024-11-18 14:37:18,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:18,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072572553] [2024-11-18 14:37:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:18,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072572553] [2024-11-18 14:37:18,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072572553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:18,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:18,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:18,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896127803] [2024-11-18 14:37:18,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:18,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:18,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:18,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:18,602 INFO L87 Difference]: Start difference. First operand 3376 states and 4415 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:18,941 INFO L93 Difference]: Finished difference Result 6404 states and 8398 transitions. [2024-11-18 14:37:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:18,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-18 14:37:18,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:18,965 INFO L225 Difference]: With dead ends: 6404 [2024-11-18 14:37:18,967 INFO L226 Difference]: Without dead ends: 3100 [2024-11-18 14:37:18,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:18,976 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 74 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:18,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 725 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-11-18 14:37:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2995. [2024-11-18 14:37:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2226 states have (on average 1.3144654088050314) internal successors, (2926), 2250 states have internal predecessors, (2926), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-18 14:37:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3930 transitions. [2024-11-18 14:37:19,305 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3930 transitions. Word has length 102 [2024-11-18 14:37:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:19,305 INFO L471 AbstractCegarLoop]: Abstraction has 2995 states and 3930 transitions. [2024-11-18 14:37:19,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3930 transitions. [2024-11-18 14:37:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:19,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:19,308 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:19,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 14:37:19,308 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:19,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:19,309 INFO L85 PathProgramCache]: Analyzing trace with hash 687578534, now seen corresponding path program 1 times [2024-11-18 14:37:19,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060288778] [2024-11-18 14:37:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:19,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060288778] [2024-11-18 14:37:19,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060288778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:19,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:19,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185527109] [2024-11-18 14:37:19,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:19,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:19,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:19,368 INFO L87 Difference]: Start difference. First operand 2995 states and 3930 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:19,675 INFO L93 Difference]: Finished difference Result 5837 states and 7691 transitions. [2024-11-18 14:37:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:19,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-18 14:37:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:19,698 INFO L225 Difference]: With dead ends: 5837 [2024-11-18 14:37:19,702 INFO L226 Difference]: Without dead ends: 3023 [2024-11-18 14:37:19,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:19,713 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 4 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:19,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 464 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:19,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2024-11-18 14:37:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 3002. [2024-11-18 14:37:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2233 states have (on average 1.3134796238244515) internal successors, (2933), 2257 states have internal predecessors, (2933), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-18 14:37:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 3937 transitions. [2024-11-18 14:37:19,960 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 3937 transitions. Word has length 104 [2024-11-18 14:37:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:19,960 INFO L471 AbstractCegarLoop]: Abstraction has 3002 states and 3937 transitions. [2024-11-18 14:37:19,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:19,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 3937 transitions. [2024-11-18 14:37:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:19,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:19,962 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:19,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 14:37:19,962 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:19,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:19,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1642694862, now seen corresponding path program 1 times [2024-11-18 14:37:19,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:19,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905763057] [2024-11-18 14:37:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:19,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:37:20,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:20,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905763057] [2024-11-18 14:37:20,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905763057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:20,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:20,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:20,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724427864] [2024-11-18 14:37:20,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:20,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:20,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:20,059 INFO L87 Difference]: Start difference. First operand 3002 states and 3937 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:20,248 INFO L93 Difference]: Finished difference Result 5798 states and 7628 transitions. [2024-11-18 14:37:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:20,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-18 14:37:20,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:20,262 INFO L225 Difference]: With dead ends: 5798 [2024-11-18 14:37:20,262 INFO L226 Difference]: Without dead ends: 2915 [2024-11-18 14:37:20,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:20,267 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 60 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:20,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 717 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2024-11-18 14:37:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2759. [2024-11-18 14:37:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2049 states have (on average 1.3128355295265983) internal successors, (2690), 2068 states have internal predecessors, (2690), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2024-11-18 14:37:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3618 transitions. [2024-11-18 14:37:20,431 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3618 transitions. Word has length 104 [2024-11-18 14:37:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:20,431 INFO L471 AbstractCegarLoop]: Abstraction has 2759 states and 3618 transitions. [2024-11-18 14:37:20,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:20,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3618 transitions. [2024-11-18 14:37:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 14:37:20,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:20,435 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] [2024-11-18 14:37:20,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 14:37:20,435 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:20,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:20,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2091605457, now seen corresponding path program 1 times [2024-11-18 14:37:20,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:20,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433195914] [2024-11-18 14:37:20,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:20,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:20,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:20,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433195914] [2024-11-18 14:37:20,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433195914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:20,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780738812] [2024-11-18 14:37:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:20,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:20,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:20,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:20,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:37:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:20,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 14:37:20,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:37:21,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:37:21,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780738812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:21,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:21,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 19 [2024-11-18 14:37:21,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644321343] [2024-11-18 14:37:21,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:21,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:37:21,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:37:21,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:37:21,228 INFO L87 Difference]: Start difference. First operand 2759 states and 3618 transitions. Second operand has 19 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 10 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2024-11-18 14:37:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:23,375 INFO L93 Difference]: Finished difference Result 7165 states and 9381 transitions. [2024-11-18 14:37:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 14:37:23,376 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 10 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) Word has length 153 [2024-11-18 14:37:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:23,393 INFO L225 Difference]: With dead ends: 7165 [2024-11-18 14:37:23,393 INFO L226 Difference]: Without dead ends: 4599 [2024-11-18 14:37:23,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=555, Invalid=2525, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 14:37:23,407 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 1808 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:23,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 4349 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 14:37:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2024-11-18 14:37:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4200. [2024-11-18 14:37:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 3097 states have (on average 1.3067484662576687) internal successors, (4047), 3125 states have internal predecessors, (4047), 720 states have call successors, (720), 382 states have call predecessors, (720), 382 states have return successors, (720), 692 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-18 14:37:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 5487 transitions. [2024-11-18 14:37:23,766 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 5487 transitions. Word has length 153 [2024-11-18 14:37:23,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:23,766 INFO L471 AbstractCegarLoop]: Abstraction has 4200 states and 5487 transitions. [2024-11-18 14:37:23,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 10 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2024-11-18 14:37:23,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 5487 transitions. [2024-11-18 14:37:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 14:37:23,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:23,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:23,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:37:23,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-18 14:37:23,977 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:23,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:23,977 INFO L85 PathProgramCache]: Analyzing trace with hash 697534266, now seen corresponding path program 1 times [2024-11-18 14:37:23,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:23,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185541283] [2024-11-18 14:37:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:23,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:24,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:24,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185541283] [2024-11-18 14:37:24,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185541283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332800661] [2024-11-18 14:37:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:24,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:24,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:24,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:24,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:37:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:24,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 14:37:24,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 37 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:37:25,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 14:37:25,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332800661] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:25,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:37:25,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 15] total 22 [2024-11-18 14:37:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583153032] [2024-11-18 14:37:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:25,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:25,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:37:25,181 INFO L87 Difference]: Start difference. First operand 4200 states and 5487 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) [2024-11-18 14:37:25,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:25,606 INFO L93 Difference]: Finished difference Result 7090 states and 9314 transitions. [2024-11-18 14:37:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:25,606 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 154 [2024-11-18 14:37:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:25,621 INFO L225 Difference]: With dead ends: 7090 [2024-11-18 14:37:25,621 INFO L226 Difference]: Without dead ends: 3139 [2024-11-18 14:37:25,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:37:25,631 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:25,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2024-11-18 14:37:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3139. [2024-11-18 14:37:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2338 states have (on average 1.3023952095808384) internal successors, (3045), 2358 states have internal predecessors, (3045), 518 states have call successors, (518), 282 states have call predecessors, (518), 282 states have return successors, (518), 498 states have call predecessors, (518), 518 states have call successors, (518) [2024-11-18 14:37:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4081 transitions. [2024-11-18 14:37:25,995 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4081 transitions. Word has length 154 [2024-11-18 14:37:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:25,996 INFO L471 AbstractCegarLoop]: Abstraction has 3139 states and 4081 transitions. [2024-11-18 14:37:25,996 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) [2024-11-18 14:37:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4081 transitions. [2024-11-18 14:37:26,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:37:26,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:26,001 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:26,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:37:26,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-18 14:37:26,206 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:26,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1323920267, now seen corresponding path program 1 times [2024-11-18 14:37:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:26,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288862797] [2024-11-18 14:37:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:26,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:26,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:26,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288862797] [2024-11-18 14:37:26,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288862797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:26,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917757290] [2024-11-18 14:37:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:26,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:26,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:26,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:26,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:37:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:27,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 14:37:27,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:37:27,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:27,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917757290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:27,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:27,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-11-18 14:37:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378288561] [2024-11-18 14:37:27,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:27,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 14:37:27,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 14:37:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:37:27,635 INFO L87 Difference]: Start difference. First operand 3139 states and 4081 transitions. Second operand has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 22 states have internal predecessors, (260), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-18 14:37:31,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:31,435 INFO L93 Difference]: Finished difference Result 8927 states and 11667 transitions. [2024-11-18 14:37:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-18 14:37:31,435 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 22 states have internal predecessors, (260), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 155 [2024-11-18 14:37:31,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:31,457 INFO L225 Difference]: With dead ends: 8927 [2024-11-18 14:37:31,457 INFO L226 Difference]: Without dead ends: 6066 [2024-11-18 14:37:31,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=985, Invalid=5495, Unknown=0, NotChecked=0, Total=6480 [2024-11-18 14:37:31,466 INFO L432 NwaCegarLoop]: 626 mSDtfsCounter, 2697 mSDsluCounter, 6781 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 7407 SdHoareTripleChecker+Invalid, 4339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:31,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 7407 Invalid, 4339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [948 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 14:37:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2024-11-18 14:37:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5180. [2024-11-18 14:37:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 3849 states have (on average 1.3070927513639907) internal successors, (5031), 3882 states have internal predecessors, (5031), 861 states have call successors, (861), 469 states have call predecessors, (861), 469 states have return successors, (861), 828 states have call predecessors, (861), 861 states have call successors, (861) [2024-11-18 14:37:32,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 6753 transitions. [2024-11-18 14:37:32,013 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 6753 transitions. Word has length 155 [2024-11-18 14:37:32,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:32,014 INFO L471 AbstractCegarLoop]: Abstraction has 5180 states and 6753 transitions. [2024-11-18 14:37:32,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 22 states have internal predecessors, (260), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-18 14:37:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 6753 transitions. [2024-11-18 14:37:32,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 14:37:32,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:32,020 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:32,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:37:32,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:32,221 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:32,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:32,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2127382271, now seen corresponding path program 1 times [2024-11-18 14:37:32,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:32,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236567011] [2024-11-18 14:37:32,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:32,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:37:32,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:32,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236567011] [2024-11-18 14:37:32,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236567011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:32,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416354614] [2024-11-18 14:37:32,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:32,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:32,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:32,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:32,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:37:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:32,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 14:37:32,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:37:33,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-18 14:37:33,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416354614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:33,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:33,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-18 14:37:33,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038604420] [2024-11-18 14:37:33,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:33,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:37:33,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:33,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:37:33,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:37:33,102 INFO L87 Difference]: Start difference. First operand 5180 states and 6753 transitions. Second operand has 14 states, 13 states have (on average 13.846153846153847) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) [2024-11-18 14:37:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:34,201 INFO L93 Difference]: Finished difference Result 13546 states and 17582 transitions. [2024-11-18 14:37:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 14:37:34,201 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 13.846153846153847) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) Word has length 157 [2024-11-18 14:37:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:34,227 INFO L225 Difference]: With dead ends: 13546 [2024-11-18 14:37:34,228 INFO L226 Difference]: Without dead ends: 8570 [2024-11-18 14:37:34,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:37:34,238 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 211 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:34,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2792 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:37:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8570 states. [2024-11-18 14:37:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8570 to 5866. [2024-11-18 14:37:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5866 states, 4344 states have (on average 1.304097605893186) internal successors, (5665), 4384 states have internal predecessors, (5665), 978 states have call successors, (978), 543 states have call predecessors, (978), 543 states have return successors, (978), 938 states have call predecessors, (978), 978 states have call successors, (978) [2024-11-18 14:37:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5866 states to 5866 states and 7621 transitions. [2024-11-18 14:37:34,925 INFO L78 Accepts]: Start accepts. Automaton has 5866 states and 7621 transitions. Word has length 157 [2024-11-18 14:37:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:34,926 INFO L471 AbstractCegarLoop]: Abstraction has 5866 states and 7621 transitions. [2024-11-18 14:37:34,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 13.846153846153847) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) [2024-11-18 14:37:34,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5866 states and 7621 transitions. [2024-11-18 14:37:34,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 14:37:34,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:34,933 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:34,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:35,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:35,135 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:35,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1838933631, now seen corresponding path program 1 times [2024-11-18 14:37:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:35,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551533851] [2024-11-18 14:37:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 14:37:35,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:35,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551533851] [2024-11-18 14:37:35,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551533851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:35,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703077253] [2024-11-18 14:37:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:35,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:35,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:35,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:35,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:37:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:36,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 14:37:36,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:37:36,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 29 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-18 14:37:36,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703077253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:36,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:36,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 9] total 22 [2024-11-18 14:37:36,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122237788] [2024-11-18 14:37:36,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:36,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 14:37:36,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:36,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 14:37:36,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:37:36,506 INFO L87 Difference]: Start difference. First operand 5866 states and 7621 transitions. Second operand has 22 states, 22 states have (on average 8.0) internal successors, (176), 17 states have internal predecessors, (176), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-18 14:37:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:38,507 INFO L93 Difference]: Finished difference Result 16410 states and 21931 transitions. [2024-11-18 14:37:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:37:38,508 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.0) internal successors, (176), 17 states have internal predecessors, (176), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32) Word has length 173 [2024-11-18 14:37:38,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:38,547 INFO L225 Difference]: With dead ends: 16410 [2024-11-18 14:37:38,547 INFO L226 Difference]: Without dead ends: 10652 [2024-11-18 14:37:38,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 14:37:38,561 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 631 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:38,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 3332 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:37:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10652 states. [2024-11-18 14:37:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10652 to 6812. [2024-11-18 14:37:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6812 states, 5022 states have (on average 1.2947033054559935) internal successors, (6502), 5072 states have internal predecessors, (6502), 1150 states have call successors, (1150), 639 states have call predecessors, (1150), 639 states have return successors, (1150), 1100 states have call predecessors, (1150), 1150 states have call successors, (1150) [2024-11-18 14:37:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6812 states to 6812 states and 8802 transitions. [2024-11-18 14:37:39,397 INFO L78 Accepts]: Start accepts. Automaton has 6812 states and 8802 transitions. Word has length 173 [2024-11-18 14:37:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:39,397 INFO L471 AbstractCegarLoop]: Abstraction has 6812 states and 8802 transitions. [2024-11-18 14:37:39,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.0) internal successors, (176), 17 states have internal predecessors, (176), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-18 14:37:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 6812 states and 8802 transitions. [2024-11-18 14:37:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-18 14:37:39,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:39,411 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:39,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:37:39,612 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 [2024-11-18 14:37:39,613 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:39,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:39,613 INFO L85 PathProgramCache]: Analyzing trace with hash -468352694, now seen corresponding path program 1 times [2024-11-18 14:37:39,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:39,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832233684] [2024-11-18 14:37:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:39,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 14:37:40,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832233684] [2024-11-18 14:37:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832233684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113006613] [2024-11-18 14:37:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:40,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:40,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:40,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:40,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:37:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:40,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-18 14:37:40,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 76 proven. 14 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:37:40,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 14:37:41,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113006613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:41,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:41,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 30 [2024-11-18 14:37:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338981848] [2024-11-18 14:37:41,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:41,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 14:37:41,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 14:37:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-11-18 14:37:41,618 INFO L87 Difference]: Start difference. First operand 6812 states and 8802 transitions. Second operand has 30 states, 30 states have (on average 9.3) internal successors, (279), 30 states have internal predecessors, (279), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-11-18 14:37:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:43,803 INFO L93 Difference]: Finished difference Result 14485 states and 18807 transitions. [2024-11-18 14:37:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 14:37:43,804 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.3) internal successors, (279), 30 states have internal predecessors, (279), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) Word has length 180 [2024-11-18 14:37:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:43,832 INFO L225 Difference]: With dead ends: 14485 [2024-11-18 14:37:43,832 INFO L226 Difference]: Without dead ends: 7992 [2024-11-18 14:37:43,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 14:37:43,844 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 1094 mSDsluCounter, 3821 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 4258 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:43,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 4258 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 14:37:43,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7992 states. [2024-11-18 14:37:44,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7992 to 7935. [2024-11-18 14:37:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7935 states, 5836 states have (on average 1.2947224126113777) internal successors, (7556), 5897 states have internal predecessors, (7556), 1349 states have call successors, (1349), 749 states have call predecessors, (1349), 749 states have return successors, (1349), 1288 states have call predecessors, (1349), 1349 states have call successors, (1349) [2024-11-18 14:37:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7935 states to 7935 states and 10254 transitions. [2024-11-18 14:37:44,771 INFO L78 Accepts]: Start accepts. Automaton has 7935 states and 10254 transitions. Word has length 180 [2024-11-18 14:37:44,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:44,771 INFO L471 AbstractCegarLoop]: Abstraction has 7935 states and 10254 transitions. [2024-11-18 14:37:44,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.3) internal successors, (279), 30 states have internal predecessors, (279), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-11-18 14:37:44,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7935 states and 10254 transitions. [2024-11-18 14:37:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-18 14:37:44,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:44,779 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:44,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:37:44,980 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 [2024-11-18 14:37:44,980 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:44,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash 402397944, now seen corresponding path program 1 times [2024-11-18 14:37:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:44,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922592448] [2024-11-18 14:37:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:44,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-18 14:37:45,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:45,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922592448] [2024-11-18 14:37:45,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922592448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:45,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:45,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:37:45,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968307474] [2024-11-18 14:37:45,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:45,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:37:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:45,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:37:45,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:45,136 INFO L87 Difference]: Start difference. First operand 7935 states and 10254 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:47,140 INFO L93 Difference]: Finished difference Result 23447 states and 30380 transitions. [2024-11-18 14:37:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:37:47,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 180 [2024-11-18 14:37:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:47,195 INFO L225 Difference]: With dead ends: 23447 [2024-11-18 14:37:47,195 INFO L226 Difference]: Without dead ends: 15831 [2024-11-18 14:37:47,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:47,212 INFO L432 NwaCegarLoop]: 467 mSDtfsCounter, 215 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:47,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2478 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15831 states. [2024-11-18 14:37:48,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15831 to 11392. [2024-11-18 14:37:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11392 states, 8323 states have (on average 1.2926829268292683) internal successors, (10759), 8411 states have internal predecessors, (10759), 1991 states have call successors, (1991), 1077 states have call predecessors, (1991), 1077 states have return successors, (1991), 1903 states have call predecessors, (1991), 1991 states have call successors, (1991) [2024-11-18 14:37:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11392 states to 11392 states and 14741 transitions. [2024-11-18 14:37:48,941 INFO L78 Accepts]: Start accepts. Automaton has 11392 states and 14741 transitions. Word has length 180 [2024-11-18 14:37:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:48,942 INFO L471 AbstractCegarLoop]: Abstraction has 11392 states and 14741 transitions. [2024-11-18 14:37:48,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 11392 states and 14741 transitions. [2024-11-18 14:37:48,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-18 14:37:48,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:48,951 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:48,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-18 14:37:48,951 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:48,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:48,952 INFO L85 PathProgramCache]: Analyzing trace with hash 349931155, now seen corresponding path program 1 times [2024-11-18 14:37:48,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:48,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712889137] [2024-11-18 14:37:48,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:48,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 14:37:49,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:49,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712889137] [2024-11-18 14:37:49,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712889137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:49,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487632793] [2024-11-18 14:37:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:49,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:49,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:49,801 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:49,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:37:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:50,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 14:37:50,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 73 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:37:50,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 14:37:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487632793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:51,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 28 [2024-11-18 14:37:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15411345] [2024-11-18 14:37:51,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:51,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:37:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:37:51,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:37:51,858 INFO L87 Difference]: Start difference. First operand 11392 states and 14741 transitions. Second operand has 28 states, 28 states have (on average 10.214285714285714) internal successors, (286), 28 states have internal predecessors, (286), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-11-18 14:37:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:54,920 INFO L93 Difference]: Finished difference Result 23215 states and 30121 transitions. [2024-11-18 14:37:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 14:37:54,921 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.214285714285714) internal successors, (286), 28 states have internal predecessors, (286), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) Word has length 181 [2024-11-18 14:37:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:54,965 INFO L225 Difference]: With dead ends: 23215 [2024-11-18 14:37:54,966 INFO L226 Difference]: Without dead ends: 12142 [2024-11-18 14:37:54,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 14:37:54,984 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 887 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:54,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 3315 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 14:37:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12142 states. [2024-11-18 14:37:56,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12142 to 12030. [2024-11-18 14:37:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12030 states, 8790 states have (on average 1.2918088737201365) internal successors, (11355), 8884 states have internal predecessors, (11355), 2100 states have call successors, (2100), 1139 states have call predecessors, (2100), 1139 states have return successors, (2100), 2006 states have call predecessors, (2100), 2100 states have call successors, (2100) [2024-11-18 14:37:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12030 states to 12030 states and 15555 transitions. [2024-11-18 14:37:56,974 INFO L78 Accepts]: Start accepts. Automaton has 12030 states and 15555 transitions. Word has length 181 [2024-11-18 14:37:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:56,975 INFO L471 AbstractCegarLoop]: Abstraction has 12030 states and 15555 transitions. [2024-11-18 14:37:56,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.214285714285714) internal successors, (286), 28 states have internal predecessors, (286), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-11-18 14:37:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 12030 states and 15555 transitions. [2024-11-18 14:37:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 14:37:56,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:56,986 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:57,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:37:57,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:57,187 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:57,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1387031853, now seen corresponding path program 1 times [2024-11-18 14:37:57,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:57,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482799982] [2024-11-18 14:37:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:57,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 14:37:57,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:57,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482799982] [2024-11-18 14:37:57,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482799982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:57,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416981794] [2024-11-18 14:37:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:57,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:57,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:57,472 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:57,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:37:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 14:37:57,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 68 proven. 22 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:37:58,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 14:37:58,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416981794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:58,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:58,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 22 [2024-11-18 14:37:58,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886780178] [2024-11-18 14:37:58,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:58,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 14:37:58,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 14:37:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:37:58,507 INFO L87 Difference]: Start difference. First operand 12030 states and 15555 transitions. Second operand has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2024-11-18 14:38:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:04,863 INFO L93 Difference]: Finished difference Result 32554 states and 42292 transitions. [2024-11-18 14:38:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-18 14:38:04,864 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) Word has length 182 [2024-11-18 14:38:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:04,951 INFO L225 Difference]: With dead ends: 32554 [2024-11-18 14:38:04,951 INFO L226 Difference]: Without dead ends: 20843 [2024-11-18 14:38:04,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3472 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1536, Invalid=8766, Unknown=0, NotChecked=0, Total=10302 [2024-11-18 14:38:04,998 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 5098 mSDsluCounter, 3885 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 1678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5098 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 4011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1678 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:04,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5098 Valid, 4318 Invalid, 4011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1678 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 14:38:05,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20843 states. [2024-11-18 14:38:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20843 to 19315. [2024-11-18 14:38:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19315 states, 14199 states have (on average 1.2945982111416297) internal successors, (18382), 14347 states have internal predecessors, (18382), 3301 states have call successors, (3301), 1814 states have call predecessors, (3301), 1814 states have return successors, (3301), 3153 states have call predecessors, (3301), 3301 states have call successors, (3301) [2024-11-18 14:38:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19315 states to 19315 states and 24984 transitions. [2024-11-18 14:38:08,242 INFO L78 Accepts]: Start accepts. Automaton has 19315 states and 24984 transitions. Word has length 182 [2024-11-18 14:38:08,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:08,246 INFO L471 AbstractCegarLoop]: Abstraction has 19315 states and 24984 transitions. [2024-11-18 14:38:08,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2024-11-18 14:38:08,246 INFO L276 IsEmpty]: Start isEmpty. Operand 19315 states and 24984 transitions. [2024-11-18 14:38:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 14:38:08,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:08,270 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:08,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:08,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-18 14:38:08,475 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:08,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1441452950, now seen corresponding path program 1 times [2024-11-18 14:38:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:08,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619781369] [2024-11-18 14:38:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 14:38:09,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:09,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619781369] [2024-11-18 14:38:09,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619781369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:09,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080424872] [2024-11-18 14:38:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:09,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:09,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:09,494 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:09,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:38:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:09,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-18 14:38:09,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:38:10,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 14:38:11,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080424872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:11,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:11,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 13] total 28 [2024-11-18 14:38:11,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313890133] [2024-11-18 14:38:11,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:11,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:38:11,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:38:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:38:11,170 INFO L87 Difference]: Start difference. First operand 19315 states and 24984 transitions. Second operand has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 10 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2024-11-18 14:38:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:19,767 INFO L93 Difference]: Finished difference Result 40998 states and 53087 transitions. [2024-11-18 14:38:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-18 14:38:19,768 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 10 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) Word has length 182 [2024-11-18 14:38:19,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:19,896 INFO L225 Difference]: With dead ends: 40998 [2024-11-18 14:38:19,897 INFO L226 Difference]: Without dead ends: 22002 [2024-11-18 14:38:19,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1229, Invalid=5413, Unknown=0, NotChecked=0, Total=6642 [2024-11-18 14:38:19,926 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 2485 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:19,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 3298 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 14:38:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22002 states. [2024-11-18 14:38:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22002 to 21621. [2024-11-18 14:38:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21621 states, 15927 states have (on average 1.2934639291768695) internal successors, (20601), 16092 states have internal predecessors, (20601), 3664 states have call successors, (3664), 2029 states have call predecessors, (3664), 2029 states have return successors, (3664), 3499 states have call predecessors, (3664), 3664 states have call successors, (3664) [2024-11-18 14:38:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21621 states to 21621 states and 27929 transitions. [2024-11-18 14:38:23,820 INFO L78 Accepts]: Start accepts. Automaton has 21621 states and 27929 transitions. Word has length 182 [2024-11-18 14:38:23,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:23,820 INFO L471 AbstractCegarLoop]: Abstraction has 21621 states and 27929 transitions. [2024-11-18 14:38:23,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 10 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2024-11-18 14:38:23,820 INFO L276 IsEmpty]: Start isEmpty. Operand 21621 states and 27929 transitions. [2024-11-18 14:38:23,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 14:38:23,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:23,828 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:23,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:24,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-18 14:38:24,029 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:24,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1302561290, now seen corresponding path program 1 times [2024-11-18 14:38:24,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:24,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877044412] [2024-11-18 14:38:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:24,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-18 14:38:24,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877044412] [2024-11-18 14:38:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877044412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:24,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063269477] [2024-11-18 14:38:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:24,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:24,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:24,577 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:24,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:38:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:24,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 14:38:24,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 76 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:38:25,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-18 14:38:25,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063269477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:25,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:25,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2024-11-18 14:38:25,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693428239] [2024-11-18 14:38:25,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:25,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 14:38:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 14:38:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-18 14:38:25,249 INFO L87 Difference]: Start difference. First operand 21621 states and 27929 transitions. Second operand has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 18 states have internal predecessors, (228), 6 states have call successors, (37), 4 states have call predecessors, (37), 8 states have return successors, (37), 9 states have call predecessors, (37), 6 states have call successors, (37)