./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.09.cil-2.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 ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:19:49,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:19:49,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:19:49,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:19:49,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:19:49,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:19:49,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:19:49,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:19:49,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:19:49,998 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:19:49,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:19:49,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:19:49,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:19:49,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:19:50,001 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:19:50,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:19:50,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:19:50,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:19:50,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:19:50,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:19:50,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:19:50,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:19:50,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:19:50,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:19:50,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:19:50,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:19:50,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:19:50,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:19:50,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:19:50,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:19:50,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:19:50,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:19:50,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:19:50,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:19:50,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:19:50,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:19:50,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:19:50,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:19:50,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:19:50,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:19:50,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:19:50,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:19:50,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 [2024-11-22 02:19:50,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:19:50,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:19:50,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:19:50,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:19:50,256 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:19:50,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2024-11-22 02:19:51,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:19:51,779 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:19:51,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2024-11-22 02:19:51,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ffbcbcf/0c6c9b56268c4586b8ede9a4f5105ada/FLAG39ff3c426 [2024-11-22 02:19:52,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ffbcbcf/0c6c9b56268c4586b8ede9a4f5105ada [2024-11-22 02:19:52,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:19:52,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:19:52,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:19:52,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:19:52,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:19:52,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774078cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52, skipping insertion in model container [2024-11-22 02:19:52,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,201 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:19:52,366 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/systemc/token_ring.09.cil-2.c[671,684] [2024-11-22 02:19:52,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:19:52,554 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:19:52,565 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/systemc/token_ring.09.cil-2.c[671,684] [2024-11-22 02:19:52,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:19:52,625 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:19:52,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52 WrapperNode [2024-11-22 02:19:52,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:19:52,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:19:52,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:19:52,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:19:52,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,687 INFO L138 Inliner]: procedures = 46, calls = 59, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 705 [2024-11-22 02:19:52,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:19:52,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:19:52,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:19:52,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:19:52,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,705 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,738 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:19:52,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:19:52,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:19:52,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:19:52,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:19:52,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (1/1) ... [2024-11-22 02:19:52,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:19:52,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:19:52,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:19:52,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:19:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:19:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-22 02:19:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-22 02:19:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-22 02:19:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-22 02:19:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-22 02:19:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-22 02:19:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 02:19:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 02:19:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-22 02:19:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-22 02:19:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-22 02:19:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-22 02:19:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:19:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-22 02:19:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-22 02:19:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:19:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:19:52,998 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:19:53,001 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:19:53,680 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-11-22 02:19:53,680 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:19:53,733 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:19:53,734 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-22 02:19:53,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:19:53 BoogieIcfgContainer [2024-11-22 02:19:53,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:19:53,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:19:53,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:19:53,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:19:53,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:19:52" (1/3) ... [2024-11-22 02:19:53,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5251af39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:19:53, skipping insertion in model container [2024-11-22 02:19:53,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:52" (2/3) ... [2024-11-22 02:19:53,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5251af39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:19:53, skipping insertion in model container [2024-11-22 02:19:53,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:19:53" (3/3) ... [2024-11-22 02:19:53,746 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-2.c [2024-11-22 02:19:53,799 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:19:53,799 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:19:53,865 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:19:53,870 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;@6b569484, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:19:53,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:19:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 291 states have (on average 1.6357388316151202) internal successors, (476), 295 states have internal predecessors, (476), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-22 02:19:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:19:53,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:19:53,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:19:53,892 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:19:53,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:19:53,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1377480586, now seen corresponding path program 1 times [2024-11-22 02:19:53,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:19:53,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666969375] [2024-11-22 02:19:53,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:19:53,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:19:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:19:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:19:54,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:19:54,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666969375] [2024-11-22 02:19:54,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666969375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:19:54,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:19:54,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:19:54,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425901782] [2024-11-22 02:19:54,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:19:54,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:19:54,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:19:54,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:19:54,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:19:54,322 INFO L87 Difference]: Start difference. First operand has 325 states, 291 states have (on average 1.6357388316151202) internal successors, (476), 295 states have internal predecessors, (476), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:54,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:19:54,408 INFO L93 Difference]: Finished difference Result 636 states and 1031 transitions. [2024-11-22 02:19:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:19:54,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:19:54,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:19:54,433 INFO L225 Difference]: With dead ends: 636 [2024-11-22 02:19:54,433 INFO L226 Difference]: Without dead ends: 319 [2024-11-22 02:19:54,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:19:54,443 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 486 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:19:54,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 496 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:19:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-22 02:19:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2024-11-22 02:19:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 287 states have (on average 1.5505226480836236) internal successors, (445), 289 states have internal predecessors, (445), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-22 02:19:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 493 transitions. [2024-11-22 02:19:54,512 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 493 transitions. Word has length 145 [2024-11-22 02:19:54,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:19:54,517 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 493 transitions. [2024-11-22 02:19:54,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 493 transitions. [2024-11-22 02:19:54,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:19:54,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:19:54,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:19:54,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:19:54,521 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:19:54,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:19:54,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1088661196, now seen corresponding path program 1 times [2024-11-22 02:19:54,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:19:54,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84323033] [2024-11-22 02:19:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:19:54,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:19:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:19:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:19:54,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:19:54,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84323033] [2024-11-22 02:19:54,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84323033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:19:54,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:19:54,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:19:54,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101389007] [2024-11-22 02:19:54,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:19:54,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:19:54,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:19:54,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:19:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:19:54,800 INFO L87 Difference]: Start difference. First operand 319 states and 493 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:19:55,399 INFO L93 Difference]: Finished difference Result 959 states and 1497 transitions. [2024-11-22 02:19:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:19:55,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:19:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:19:55,405 INFO L225 Difference]: With dead ends: 959 [2024-11-22 02:19:55,405 INFO L226 Difference]: Without dead ends: 657 [2024-11-22 02:19:55,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:19:55,407 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 920 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:19:55,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1488 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:19:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-22 02:19:55,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 632. [2024-11-22 02:19:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 575 states have (on average 1.5617391304347825) internal successors, (898), 578 states have internal predecessors, (898), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2024-11-22 02:19:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 983 transitions. [2024-11-22 02:19:55,439 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 983 transitions. Word has length 145 [2024-11-22 02:19:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:19:55,439 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 983 transitions. [2024-11-22 02:19:55,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 983 transitions. [2024-11-22 02:19:55,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:19:55,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:19:55,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:19:55,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:19:55,442 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:19:55,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:19:55,442 INFO L85 PathProgramCache]: Analyzing trace with hash -712804408, now seen corresponding path program 1 times [2024-11-22 02:19:55,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:19:55,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917726813] [2024-11-22 02:19:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:19:55,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:19:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:19:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:19:55,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:19:55,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917726813] [2024-11-22 02:19:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917726813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:19:55,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:19:55,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:19:55,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372844680] [2024-11-22 02:19:55,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:19:55,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:19:55,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:19:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:19:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:19:55,650 INFO L87 Difference]: Start difference. First operand 632 states and 983 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:19:56,311 INFO L93 Difference]: Finished difference Result 1644 states and 2586 transitions. [2024-11-22 02:19:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:19:56,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:19:56,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:19:56,317 INFO L225 Difference]: With dead ends: 1644 [2024-11-22 02:19:56,318 INFO L226 Difference]: Without dead ends: 1029 [2024-11-22 02:19:56,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:19:56,322 INFO L432 NwaCegarLoop]: 655 mSDtfsCounter, 923 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 02:19:56,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 2658 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 02:19:56,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2024-11-22 02:19:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 924. [2024-11-22 02:19:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 842 states have (on average 1.5546318289786223) internal successors, (1309), 846 states have internal predecessors, (1309), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (63), 60 states have call predecessors, (63), 59 states have call successors, (63) [2024-11-22 02:19:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1433 transitions. [2024-11-22 02:19:56,376 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1433 transitions. Word has length 145 [2024-11-22 02:19:56,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:19:56,378 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1433 transitions. [2024-11-22 02:19:56,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1433 transitions. [2024-11-22 02:19:56,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:19:56,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:19:56,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:19:56,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 02:19:56,385 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:19:56,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:19:56,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1419401014, now seen corresponding path program 1 times [2024-11-22 02:19:56,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:19:56,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395794158] [2024-11-22 02:19:56,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:19:56,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:19:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:19:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:19:56,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:19:56,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395794158] [2024-11-22 02:19:56,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395794158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:19:56,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:19:56,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:19:56,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122447004] [2024-11-22 02:19:56,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:19:56,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:19:56,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:19:56,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:19:56,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:19:56,550 INFO L87 Difference]: Start difference. First operand 924 states and 1433 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:19:57,183 INFO L93 Difference]: Finished difference Result 2572 states and 4039 transitions. [2024-11-22 02:19:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:19:57,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:19:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:19:57,191 INFO L225 Difference]: With dead ends: 2572 [2024-11-22 02:19:57,191 INFO L226 Difference]: Without dead ends: 1665 [2024-11-22 02:19:57,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:19:57,196 INFO L432 NwaCegarLoop]: 651 mSDtfsCounter, 918 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:19:57,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 2642 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:19:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2024-11-22 02:19:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1545. [2024-11-22 02:19:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1411 states have (on average 1.557760453579022) internal successors, (2198), 1419 states have internal predecessors, (2198), 97 states have call successors, (97), 31 states have call predecessors, (97), 36 states have return successors, (111), 98 states have call predecessors, (111), 95 states have call successors, (111) [2024-11-22 02:19:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2406 transitions. [2024-11-22 02:19:57,274 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2406 transitions. Word has length 145 [2024-11-22 02:19:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:19:57,274 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 2406 transitions. [2024-11-22 02:19:57,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2406 transitions. [2024-11-22 02:19:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:19:57,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:19:57,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:19:57,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 02:19:57,278 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:19:57,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:19:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash -472363128, now seen corresponding path program 1 times [2024-11-22 02:19:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:19:57,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434109390] [2024-11-22 02:19:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:19:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:19:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:19:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:19:57,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:19:57,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434109390] [2024-11-22 02:19:57,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434109390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:19:57,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:19:57,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:19:57,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949779227] [2024-11-22 02:19:57,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:19:57,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:19:57,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:19:57,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:19:57,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:19:57,419 INFO L87 Difference]: Start difference. First operand 1545 states and 2406 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:19:58,107 INFO L93 Difference]: Finished difference Result 4571 states and 7234 transitions. [2024-11-22 02:19:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:19:58,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:19:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:19:58,130 INFO L225 Difference]: With dead ends: 4571 [2024-11-22 02:19:58,130 INFO L226 Difference]: Without dead ends: 3043 [2024-11-22 02:19:58,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:19:58,139 INFO L432 NwaCegarLoop]: 648 mSDtfsCounter, 913 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 02:19:58,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 2630 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 02:19:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2024-11-22 02:19:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2892. [2024-11-22 02:19:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2648 states have (on average 1.5732628398791542) internal successors, (4166), 2670 states have internal predecessors, (4166), 169 states have call successors, (169), 55 states have call predecessors, (169), 74 states have return successors, (231), 174 states have call predecessors, (231), 167 states have call successors, (231) [2024-11-22 02:19:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4566 transitions. [2024-11-22 02:19:58,280 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4566 transitions. Word has length 145 [2024-11-22 02:19:58,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:19:58,280 INFO L471 AbstractCegarLoop]: Abstraction has 2892 states and 4566 transitions. [2024-11-22 02:19:58,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4566 transitions. [2024-11-22 02:19:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:19:58,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:19:58,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:19:58,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 02:19:58,283 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:19:58,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:19:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash 389470474, now seen corresponding path program 1 times [2024-11-22 02:19:58,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:19:58,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657212287] [2024-11-22 02:19:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:19:58,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:19:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:19:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:19:58,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:19:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657212287] [2024-11-22 02:19:58,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657212287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:19:58,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:19:58,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:19:58,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965814364] [2024-11-22 02:19:58,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:19:58,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:19:58,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:19:58,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:19:58,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:19:58,406 INFO L87 Difference]: Start difference. First operand 2892 states and 4566 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:19:59,193 INFO L93 Difference]: Finished difference Result 8970 states and 14468 transitions. [2024-11-22 02:19:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:19:59,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:19:59,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:19:59,218 INFO L225 Difference]: With dead ends: 8970 [2024-11-22 02:19:59,219 INFO L226 Difference]: Without dead ends: 6095 [2024-11-22 02:19:59,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:19:59,229 INFO L432 NwaCegarLoop]: 645 mSDtfsCounter, 908 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 02:19:59,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 2618 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 02:19:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2024-11-22 02:19:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 5883. [2024-11-22 02:19:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5883 states, 5401 states have (on average 1.5993334567672652) internal successors, (8638), 5469 states have internal predecessors, (8638), 313 states have call successors, (313), 103 states have call predecessors, (313), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2024-11-22 02:19:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 9518 transitions. [2024-11-22 02:19:59,420 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 9518 transitions. Word has length 145 [2024-11-22 02:19:59,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:19:59,420 INFO L471 AbstractCegarLoop]: Abstraction has 5883 states and 9518 transitions. [2024-11-22 02:19:59,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:19:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 9518 transitions. [2024-11-22 02:19:59,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:19:59,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:19:59,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:19:59,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 02:19:59,424 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:19:59,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:19:59,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1660938424, now seen corresponding path program 1 times [2024-11-22 02:19:59,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:19:59,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201591198] [2024-11-22 02:19:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:19:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:19:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:19:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:19:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:19:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201591198] [2024-11-22 02:19:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201591198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:19:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:19:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:19:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368643575] [2024-11-22 02:19:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:19:59,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:19:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:19:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:19:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:19:59,539 INFO L87 Difference]: Start difference. First operand 5883 states and 9518 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:20:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:20:00,303 INFO L93 Difference]: Finished difference Result 18797 states and 31246 transitions. [2024-11-22 02:20:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:20:00,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:20:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:20:00,367 INFO L225 Difference]: With dead ends: 18797 [2024-11-22 02:20:00,367 INFO L226 Difference]: Without dead ends: 12931 [2024-11-22 02:20:00,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:20:00,393 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 933 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:20:00,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 1811 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:20:00,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12931 states. [2024-11-22 02:20:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12931 to 12621. [2024-11-22 02:20:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12621 states, 11609 states have (on average 1.6301145662847791) internal successors, (18924), 11823 states have internal predecessors, (18924), 601 states have call successors, (601), 199 states have call predecessors, (601), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2024-11-22 02:20:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12621 states to 12621 states and 21148 transitions. [2024-11-22 02:20:00,949 INFO L78 Accepts]: Start accepts. Automaton has 12621 states and 21148 transitions. Word has length 145 [2024-11-22 02:20:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:20:00,950 INFO L471 AbstractCegarLoop]: Abstraction has 12621 states and 21148 transitions. [2024-11-22 02:20:00,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:20:00,951 INFO L276 IsEmpty]: Start isEmpty. Operand 12621 states and 21148 transitions. [2024-11-22 02:20:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:20:00,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:20:00,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:20:00,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 02:20:00,958 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:20:00,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:20:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1541393670, now seen corresponding path program 1 times [2024-11-22 02:20:00,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:20:00,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323817648] [2024-11-22 02:20:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:20:00,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:20:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:20:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:20:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:20:01,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323817648] [2024-11-22 02:20:01,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323817648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:20:01,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:20:01,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:20:01,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601799684] [2024-11-22 02:20:01,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:20:01,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:20:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:20:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:20:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:20:01,070 INFO L87 Difference]: Start difference. First operand 12621 states and 21148 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:20:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:20:02,250 INFO L93 Difference]: Finished difference Result 41403 states and 71954 transitions. [2024-11-22 02:20:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:20:02,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:20:02,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:20:02,393 INFO L225 Difference]: With dead ends: 41403 [2024-11-22 02:20:02,393 INFO L226 Difference]: Without dead ends: 28799 [2024-11-22 02:20:02,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:20:02,461 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 895 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:20:02,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 2580 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:20:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28799 states. [2024-11-22 02:20:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28799 to 28284. [2024-11-22 02:20:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28284 states, 26050 states have (on average 1.6647984644913627) internal successors, (43368), 26718 states have internal predecessors, (43368), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 1056 states have return successors, (5271), 1238 states have call predecessors, (5271), 1175 states have call successors, (5271) [2024-11-22 02:20:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28284 states to 28284 states and 49816 transitions. [2024-11-22 02:20:03,681 INFO L78 Accepts]: Start accepts. Automaton has 28284 states and 49816 transitions. Word has length 145 [2024-11-22 02:20:03,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:20:03,681 INFO L471 AbstractCegarLoop]: Abstraction has 28284 states and 49816 transitions. [2024-11-22 02:20:03,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:20:03,682 INFO L276 IsEmpty]: Start isEmpty. Operand 28284 states and 49816 transitions. [2024-11-22 02:20:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:20:03,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:20:03,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:20:03,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 02:20:03,693 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:20:03,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:20:03,693 INFO L85 PathProgramCache]: Analyzing trace with hash 259221384, now seen corresponding path program 1 times [2024-11-22 02:20:03,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:20:03,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74166502] [2024-11-22 02:20:03,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:20:03,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:20:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:20:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:20:03,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:20:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74166502] [2024-11-22 02:20:03,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74166502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:20:03,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:20:03,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:20:03,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542522303] [2024-11-22 02:20:03,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:20:03,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:20:03,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:20:03,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:20:03,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:20:03,825 INFO L87 Difference]: Start difference. First operand 28284 states and 49816 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:20:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:20:06,042 INFO L93 Difference]: Finished difference Result 94848 states and 175524 transitions. [2024-11-22 02:20:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:20:06,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:20:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:20:06,427 INFO L225 Difference]: With dead ends: 94848 [2024-11-22 02:20:06,428 INFO L226 Difference]: Without dead ends: 66581 [2024-11-22 02:20:06,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:20:06,494 INFO L432 NwaCegarLoop]: 632 mSDtfsCounter, 890 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:20:06,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 2568 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:20:06,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66581 states. [2024-11-22 02:20:09,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66581 to 65685. [2024-11-22 02:20:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65685 states, 60521 states have (on average 1.7005006526660167) internal successors, (102916), 62583 states have internal predecessors, (102916), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 2834 states have return successors, (18711), 2454 states have call predecessors, (18711), 2327 states have call successors, (18711) [2024-11-22 02:20:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65685 states to 65685 states and 123956 transitions. [2024-11-22 02:20:09,775 INFO L78 Accepts]: Start accepts. Automaton has 65685 states and 123956 transitions. Word has length 145 [2024-11-22 02:20:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:20:09,775 INFO L471 AbstractCegarLoop]: Abstraction has 65685 states and 123956 transitions. [2024-11-22 02:20:09,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:20:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 65685 states and 123956 transitions. [2024-11-22 02:20:09,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:20:09,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:20:09,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:20:09,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 02:20:09,801 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:20:09,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:20:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1583254330, now seen corresponding path program 1 times [2024-11-22 02:20:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:20:09,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450301616] [2024-11-22 02:20:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:20:09,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:20:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:20:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:20:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:20:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450301616] [2024-11-22 02:20:09,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450301616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:20:09,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:20:09,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:20:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508716913] [2024-11-22 02:20:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:20:09,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:20:09,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:20:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:20:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:20:09,924 INFO L87 Difference]: Start difference. First operand 65685 states and 123956 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:20:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:20:14,877 INFO L93 Difference]: Finished difference Result 224519 states and 453018 transitions. [2024-11-22 02:20:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:20:14,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2024-11-22 02:20:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:20:16,056 INFO L225 Difference]: With dead ends: 224519 [2024-11-22 02:20:16,057 INFO L226 Difference]: Without dead ends: 158851 [2024-11-22 02:20:16,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:20:16,219 INFO L432 NwaCegarLoop]: 629 mSDtfsCounter, 885 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:20:16,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 2556 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:20:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158851 states. [2024-11-22 02:20:25,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158851 to 157254. [2024-11-22 02:20:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157254 states, 144772 states have (on average 1.7345066725609926) internal successors, (251108), 151080 states have internal predecessors, (251108), 4633 states have call successors, (4633), 1543 states have call predecessors, (4633), 7848 states have return successors, (70167), 4886 states have call predecessors, (70167), 4631 states have call successors, (70167) [2024-11-22 02:20:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157254 states to 157254 states and 325908 transitions. [2024-11-22 02:20:26,987 INFO L78 Accepts]: Start accepts. Automaton has 157254 states and 325908 transitions. Word has length 145 [2024-11-22 02:20:26,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:20:26,988 INFO L471 AbstractCegarLoop]: Abstraction has 157254 states and 325908 transitions. [2024-11-22 02:20:26,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:20:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 157254 states and 325908 transitions. [2024-11-22 02:20:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 02:20:27,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:20:27,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:20:27,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 02:20:27,045 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:20:27,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:20:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash 989710280, now seen corresponding path program 1 times [2024-11-22 02:20:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:20:27,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204867952] [2024-11-22 02:20:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:20:27,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:20:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:20:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:20:27,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:20:27,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204867952] [2024-11-22 02:20:27,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204867952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:20:27,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:20:27,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:20:27,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972899723] [2024-11-22 02:20:27,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:20:27,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:20:27,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:20:27,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:20:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:20:27,189 INFO L87 Difference]: Start difference. First operand 157254 states and 325908 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)