./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.15.cil.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 d827a13f264a8106bf76fcdb72d7bd8ed8c070aef2487e4bd9a858009359b9d5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:16:45,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:16:45,484 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:16:45,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:16:45,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:16:45,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:16:45,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:16:45,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:16:45,521 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:16:45,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:16:45,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:16:45,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:16:45,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:16:45,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:16:45,526 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:16:45,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:16:45,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:16:45,527 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:16:45,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:16:45,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:16:45,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:16:45,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:16:45,528 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:16:45,528 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:16:45,528 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:16:45,528 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:16:45,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:16:45,529 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:16:45,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:16:45,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:16:45,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:16:45,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:16:45,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:16:45,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:16:45,530 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:16:45,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:16:45,531 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:16:45,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:16:45,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:16:45,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:16:45,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:16:45,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:16:45,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d827a13f264a8106bf76fcdb72d7bd8ed8c070aef2487e4bd9a858009359b9d5 [2024-10-24 01:16:45,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:16:45,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:16:45,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:16:45,782 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:16:45,789 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:16:45,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.15.cil.c [2024-10-24 01:16:47,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:16:47,436 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:16:47,436 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.15.cil.c [2024-10-24 01:16:47,454 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbd9a972a/8aef7a7ac81a49139418634e85ad3d4f/FLAG0c412e2f0 [2024-10-24 01:16:47,468 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbd9a972a/8aef7a7ac81a49139418634e85ad3d4f [2024-10-24 01:16:47,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:16:47,471 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:16:47,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:16:47,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:16:47,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:16:47,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:47,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d81569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47, skipping insertion in model container [2024-10-24 01:16:47,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:47,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:16:47,674 WARN L248 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.15.cil.c[669,682] [2024-10-24 01:16:47,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:16:47,781 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:16:47,790 WARN L248 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.15.cil.c[669,682] [2024-10-24 01:16:47,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:16:47,864 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:16:47,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47 WrapperNode [2024-10-24 01:16:47,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:16:47,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:16:47,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:16:47,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:16:47,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:47,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:47,912 INFO L138 Inliner]: procedures = 54, calls = 71, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 943 [2024-10-24 01:16:47,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:16:47,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:16:47,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:16:47,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:16:47,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:47,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:47,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:47,972 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]. [2024-10-24 01:16:47,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:47,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:47,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:48,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:48,025 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:48,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:48,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:16:48,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:16:48,042 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:16:48,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:16:48,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (1/1) ... [2024-10-24 01:16:48,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:16:48,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:16:48,076 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) [2024-10-24 01:16:48,086 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 [2024-10-24 01:16:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:16:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-24 01:16:48,124 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-24 01:16:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 01:16:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 01:16:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-24 01:16:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-24 01:16:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-24 01:16:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-24 01:16:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-24 01:16:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-24 01:16:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-24 01:16:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-24 01:16:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-24 01:16:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-24 01:16:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:16:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:16:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:16:48,249 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:16:48,252 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:16:48,989 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-10-24 01:16:48,990 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:16:49,043 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:16:49,043 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-24 01:16:49,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:16:49 BoogieIcfgContainer [2024-10-24 01:16:49,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:16:49,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:16:49,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:16:49,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:16:49,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:16:47" (1/3) ... [2024-10-24 01:16:49,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443798f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:16:49, skipping insertion in model container [2024-10-24 01:16:49,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:47" (2/3) ... [2024-10-24 01:16:49,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443798f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:16:49, skipping insertion in model container [2024-10-24 01:16:49,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:16:49" (3/3) ... [2024-10-24 01:16:49,050 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.15.cil.c [2024-10-24 01:16:49,065 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:16:49,066 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:16:49,123 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:16:49,129 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;@72747598, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:16:49,129 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:16:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 339 states have (on average 1.7404129793510323) internal successors, (590), 343 states have internal predecessors, (590), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-24 01:16:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:16:49,145 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:16:49,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:16:49,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:16:49,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:16:49,150 INFO L85 PathProgramCache]: Analyzing trace with hash -929816003, now seen corresponding path program 1 times [2024-10-24 01:16:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:16:49,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415800276] [2024-10-24 01:16:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:16:49,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:16:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:49,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:16:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:49,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:16:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:49,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:16:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:49,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:16:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:49,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:16:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:16:49,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:16:49,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415800276] [2024-10-24 01:16:49,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415800276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:16:49,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:16:49,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:16:49,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163141227] [2024-10-24 01:16:49,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:16:49,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:16:49,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:16:49,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:16:49,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:16:49,877 INFO L87 Difference]: Start difference. First operand has 377 states, 339 states have (on average 1.7404129793510323) internal successors, (590), 343 states have internal predecessors, (590), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:16:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:16:51,811 INFO L93 Difference]: Finished difference Result 883 states and 1529 transitions. [2024-10-24 01:16:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:16:51,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:16:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:16:51,827 INFO L225 Difference]: With dead ends: 883 [2024-10-24 01:16:51,827 INFO L226 Difference]: Without dead ends: 514 [2024-10-24 01:16:51,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:16:51,834 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 1054 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:16:51,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 683 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 01:16:51,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-10-24 01:16:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 374. [2024-10-24 01:16:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 338 states have (on average 1.6390532544378698) internal successors, (554), 340 states have internal predecessors, (554), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-24 01:16:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 610 transitions. [2024-10-24 01:16:51,901 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 610 transitions. Word has length 171 [2024-10-24 01:16:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:16:51,902 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 610 transitions. [2024-10-24 01:16:51,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:16:51,902 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 610 transitions. [2024-10-24 01:16:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:16:51,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:16:51,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:16:51,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:16:51,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:16:51,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:16:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash -143818113, now seen corresponding path program 1 times [2024-10-24 01:16:51,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:16:51,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643706000] [2024-10-24 01:16:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:16:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:16:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:52,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:16:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:52,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:16:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:52,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:16:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:52,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:16:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:52,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:16:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:16:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:16:52,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643706000] [2024-10-24 01:16:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643706000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:16:52,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:16:52,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:16:52,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930944544] [2024-10-24 01:16:52,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:16:52,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:16:52,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:16:52,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:16:52,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:16:52,333 INFO L87 Difference]: Start difference. First operand 374 states and 610 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:16:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:16:55,602 INFO L93 Difference]: Finished difference Result 1385 states and 2306 transitions. [2024-10-24 01:16:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 01:16:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:16:55,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:16:55,607 INFO L225 Difference]: With dead ends: 1385 [2024-10-24 01:16:55,607 INFO L226 Difference]: Without dead ends: 1030 [2024-10-24 01:16:55,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:16:55,609 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 1598 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:16:55,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 1150 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-24 01:16:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2024-10-24 01:16:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 749. [2024-10-24 01:16:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 684 states have (on average 1.6476608187134503) internal successors, (1127), 687 states have internal predecessors, (1127), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2024-10-24 01:16:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1230 transitions. [2024-10-24 01:16:55,669 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1230 transitions. Word has length 171 [2024-10-24 01:16:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:16:55,669 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1230 transitions. [2024-10-24 01:16:55,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:16:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1230 transitions. [2024-10-24 01:16:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:16:55,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:16:55,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:16:55,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:16:55,672 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:16:55,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:16:55,672 INFO L85 PathProgramCache]: Analyzing trace with hash 861287163, now seen corresponding path program 1 times [2024-10-24 01:16:55,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:16:55,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039582122] [2024-10-24 01:16:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:16:55,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:16:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:55,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:16:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:55,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:16:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:55,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:16:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:55,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:16:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:55,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:16:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:16:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:16:55,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:16:55,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039582122] [2024-10-24 01:16:55,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039582122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:16:55,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:16:55,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:16:55,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449960829] [2024-10-24 01:16:55,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:16:55,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:16:55,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:16:55,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:16:55,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:16:55,915 INFO L87 Difference]: Start difference. First operand 749 states and 1230 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:16:59,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:16:59,873 INFO L93 Difference]: Finished difference Result 2296 states and 3828 transitions. [2024-10-24 01:16:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:16:59,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:16:59,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:16:59,879 INFO L225 Difference]: With dead ends: 2296 [2024-10-24 01:16:59,880 INFO L226 Difference]: Without dead ends: 1566 [2024-10-24 01:16:59,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:16:59,885 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 1645 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 4008 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:16:59,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 2192 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4008 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-24 01:16:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-10-24 01:16:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1095. [2024-10-24 01:16:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1001 states have (on average 1.6403596403596403) internal successors, (1642), 1005 states have internal predecessors, (1642), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2024-10-24 01:16:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1791 transitions. [2024-10-24 01:16:59,956 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1791 transitions. Word has length 171 [2024-10-24 01:16:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:16:59,957 INFO L471 AbstractCegarLoop]: Abstraction has 1095 states and 1791 transitions. [2024-10-24 01:16:59,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:16:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1791 transitions. [2024-10-24 01:16:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:16:59,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:16:59,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:16:59,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:16:59,959 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:16:59,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:16:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1247149565, now seen corresponding path program 1 times [2024-10-24 01:16:59,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:16:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721364546] [2024-10-24 01:16:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:16:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:16:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:00,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:17:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:00,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:17:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:00,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:17:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:00,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:17:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:00,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:17:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:17:00,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:17:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721364546] [2024-10-24 01:17:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721364546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:17:00,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:17:00,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:17:00,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598139083] [2024-10-24 01:17:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:17:00,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:17:00,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:17:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:17:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:17:00,201 INFO L87 Difference]: Start difference. First operand 1095 states and 1791 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:17:03,952 INFO L93 Difference]: Finished difference Result 3630 states and 6043 transitions. [2024-10-24 01:17:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:17:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:17:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:17:03,964 INFO L225 Difference]: With dead ends: 3630 [2024-10-24 01:17:03,964 INFO L226 Difference]: Without dead ends: 2554 [2024-10-24 01:17:03,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:17:03,969 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 1639 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 3987 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-24 01:17:03,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 2190 Invalid, 4056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3987 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-24 01:17:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2024-10-24 01:17:04,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1791. [2024-10-24 01:17:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1639 states have (on average 1.6345332519829163) internal successors, (2679), 1645 states have internal predecessors, (2679), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2024-10-24 01:17:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2924 transitions. [2024-10-24 01:17:04,084 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2924 transitions. Word has length 171 [2024-10-24 01:17:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:17:04,085 INFO L471 AbstractCegarLoop]: Abstraction has 1791 states and 2924 transitions. [2024-10-24 01:17:04,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2924 transitions. [2024-10-24 01:17:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:17:04,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:17:04,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:17:04,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:17:04,088 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:17:04,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:17:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1116692097, now seen corresponding path program 1 times [2024-10-24 01:17:04,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:17:04,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960740583] [2024-10-24 01:17:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:17:04,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:17:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:04,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:17:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:04,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:17:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:04,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:17:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:04,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:17:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:04,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:17:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:17:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:17:04,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960740583] [2024-10-24 01:17:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960740583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:17:04,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:17:04,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:17:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963206900] [2024-10-24 01:17:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:17:04,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:17:04,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:17:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:17:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:17:04,364 INFO L87 Difference]: Start difference. First operand 1791 states and 2924 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:17:08,142 INFO L93 Difference]: Finished difference Result 6192 states and 10272 transitions. [2024-10-24 01:17:08,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:17:08,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:17:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:17:08,156 INFO L225 Difference]: With dead ends: 6192 [2024-10-24 01:17:08,156 INFO L226 Difference]: Without dead ends: 4420 [2024-10-24 01:17:08,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:17:08,163 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 1638 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 3974 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-24 01:17:08,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 2190 Invalid, 4043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3974 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-24 01:17:08,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2024-10-24 01:17:08,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3184. [2024-10-24 01:17:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 2916 states have (on average 1.6299725651577504) internal successors, (4753), 2926 states have internal predecessors, (4753), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2024-10-24 01:17:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 5196 transitions. [2024-10-24 01:17:08,303 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 5196 transitions. Word has length 171 [2024-10-24 01:17:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:17:08,303 INFO L471 AbstractCegarLoop]: Abstraction has 3184 states and 5196 transitions. [2024-10-24 01:17:08,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:08,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 5196 transitions. [2024-10-24 01:17:08,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:17:08,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:17:08,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:17:08,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:17:08,307 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:17:08,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:17:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1855096253, now seen corresponding path program 1 times [2024-10-24 01:17:08,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:17:08,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998572213] [2024-10-24 01:17:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:17:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:17:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:08,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:17:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:08,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:17:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:08,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:17:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:08,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:17:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:08,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:17:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:17:08,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:17:08,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998572213] [2024-10-24 01:17:08,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998572213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:17:08,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:17:08,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:17:08,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450314846] [2024-10-24 01:17:08,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:17:08,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:17:08,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:17:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:17:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:17:08,575 INFO L87 Difference]: Start difference. First operand 3184 states and 5196 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:17:12,333 INFO L93 Difference]: Finished difference Result 11315 states and 18746 transitions. [2024-10-24 01:17:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:17:12,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:17:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:17:12,392 INFO L225 Difference]: With dead ends: 11315 [2024-10-24 01:17:12,392 INFO L226 Difference]: Without dead ends: 8150 [2024-10-24 01:17:12,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:17:12,413 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 1637 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 01:17:12,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 2190 Invalid, 4030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 01:17:12,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8150 states. [2024-10-24 01:17:12,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8150 to 5977. [2024-10-24 01:17:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5977 states, 5477 states have (on average 1.6269855760452803) internal successors, (8911), 5495 states have internal predecessors, (8911), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2024-10-24 01:17:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5977 states to 5977 states and 9768 transitions. [2024-10-24 01:17:12,977 INFO L78 Accepts]: Start accepts. Automaton has 5977 states and 9768 transitions. Word has length 171 [2024-10-24 01:17:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:17:12,978 INFO L471 AbstractCegarLoop]: Abstraction has 5977 states and 9768 transitions. [2024-10-24 01:17:12,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5977 states and 9768 transitions. [2024-10-24 01:17:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:17:12,983 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:17:12,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:17:12,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:17:12,984 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:17:12,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:17:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash -542891585, now seen corresponding path program 1 times [2024-10-24 01:17:12,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:17:12,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898898678] [2024-10-24 01:17:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:17:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:17:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:13,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:17:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:13,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:17:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:13,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:17:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:13,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:17:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:13,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:17:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:17:13,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:17:13,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898898678] [2024-10-24 01:17:13,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898898678] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:17:13,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:17:13,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:17:13,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907297148] [2024-10-24 01:17:13,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:17:13,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:17:13,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:17:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:17:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:17:13,214 INFO L87 Difference]: Start difference. First operand 5977 states and 9768 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:17:17,020 INFO L93 Difference]: Finished difference Result 21562 states and 35756 transitions. [2024-10-24 01:17:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:17:17,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:17:17,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:17:17,082 INFO L225 Difference]: With dead ends: 21562 [2024-10-24 01:17:17,083 INFO L226 Difference]: Without dead ends: 15604 [2024-10-24 01:17:17,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:17:17,101 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 1748 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:17:17,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1768 Valid, 1420 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-24 01:17:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15604 states. [2024-10-24 01:17:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15604 to 11578. [2024-10-24 01:17:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10614 states have (on average 1.6251177689843603) internal successors, (17249), 10648 states have internal predecessors, (17249), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2024-10-24 01:17:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18988 transitions. [2024-10-24 01:17:17,704 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18988 transitions. Word has length 171 [2024-10-24 01:17:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:17:17,705 INFO L471 AbstractCegarLoop]: Abstraction has 11578 states and 18988 transitions. [2024-10-24 01:17:17,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18988 transitions. [2024-10-24 01:17:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:17:17,714 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:17:17,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:17:17,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:17:17,715 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:17:17,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:17:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash -204604035, now seen corresponding path program 1 times [2024-10-24 01:17:17,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:17:17,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855861461] [2024-10-24 01:17:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:17:17,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:17:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:17,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:17:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:17,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:17:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:17,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:17:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:17,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:17:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:17,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:17:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:17:17,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:17:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855861461] [2024-10-24 01:17:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855861461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:17:17,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:17:17,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:17:17,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479099196] [2024-10-24 01:17:17,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:17:17,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:17:17,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:17:17,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:17:17,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:17:17,972 INFO L87 Difference]: Start difference. First operand 11578 states and 18988 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:17:22,945 INFO L93 Difference]: Finished difference Result 42057 states and 69970 transitions. [2024-10-24 01:17:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:17:22,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:17:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:17:23,049 INFO L225 Difference]: With dead ends: 42057 [2024-10-24 01:17:23,049 INFO L226 Difference]: Without dead ends: 30498 [2024-10-24 01:17:23,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:17:23,083 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 1635 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 3935 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:17:23,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 2190 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3935 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-24 01:17:23,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30498 states. [2024-10-24 01:17:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30498 to 22811. [2024-10-24 01:17:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22811 states, 20919 states have (on average 1.623930398202591) internal successors, (33971), 20985 states have internal predecessors, (33971), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2024-10-24 01:17:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22811 states to 22811 states and 37636 transitions. [2024-10-24 01:17:24,217 INFO L78 Accepts]: Start accepts. Automaton has 22811 states and 37636 transitions. Word has length 171 [2024-10-24 01:17:24,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:17:24,218 INFO L471 AbstractCegarLoop]: Abstraction has 22811 states and 37636 transitions. [2024-10-24 01:17:24,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 22811 states and 37636 transitions. [2024-10-24 01:17:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:17:24,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:17:24,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:17:24,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:17:24,231 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:17:24,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:17:24,231 INFO L85 PathProgramCache]: Analyzing trace with hash 221950463, now seen corresponding path program 1 times [2024-10-24 01:17:24,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:17:24,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947821964] [2024-10-24 01:17:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:17:24,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:17:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:24,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:17:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:24,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:17:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:24,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:17:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:24,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:17:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:24,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:17:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:17:24,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:17:24,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947821964] [2024-10-24 01:17:24,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947821964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:17:24,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:17:24,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:17:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180111656] [2024-10-24 01:17:24,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:17:24,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:17:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:17:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:17:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:17:24,521 INFO L87 Difference]: Start difference. First operand 22811 states and 37636 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:30,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:17:30,509 INFO L93 Difference]: Finished difference Result 83048 states and 139000 transitions. [2024-10-24 01:17:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:17:30,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:17:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:17:30,718 INFO L225 Difference]: With dead ends: 83048 [2024-10-24 01:17:30,719 INFO L226 Difference]: Without dead ends: 60256 [2024-10-24 01:17:30,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:17:30,781 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 1634 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 3922 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 3991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 01:17:30,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 2190 Invalid, 3991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3922 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 01:17:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60256 states. [2024-10-24 01:17:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60256 to 45340. [2024-10-24 01:17:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45340 states, 41592 states have (on average 1.623124639353722) internal successors, (67509), 41722 states have internal predecessors, (67509), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2024-10-24 01:17:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45340 states to 45340 states and 75512 transitions. [2024-10-24 01:17:33,670 INFO L78 Accepts]: Start accepts. Automaton has 45340 states and 75512 transitions. Word has length 171 [2024-10-24 01:17:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:17:33,670 INFO L471 AbstractCegarLoop]: Abstraction has 45340 states and 75512 transitions. [2024-10-24 01:17:33,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 45340 states and 75512 transitions. [2024-10-24 01:17:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:17:33,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:17:33,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:17:33,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:17:33,692 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:17:33,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:17:33,693 INFO L85 PathProgramCache]: Analyzing trace with hash -318479043, now seen corresponding path program 1 times [2024-10-24 01:17:33,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:17:33,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577671546] [2024-10-24 01:17:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:17:33,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:17:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:33,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:17:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:33,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:17:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:33,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:17:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:33,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:17:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:33,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:17:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:17:33,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:17:33,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577671546] [2024-10-24 01:17:33,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577671546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:17:33,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:17:33,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:17:33,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132799787] [2024-10-24 01:17:33,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:17:33,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:17:33,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:17:33,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:17:33,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:17:33,990 INFO L87 Difference]: Start difference. First operand 45340 states and 75512 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:17:42,362 INFO L93 Difference]: Finished difference Result 165031 states and 278910 transitions. [2024-10-24 01:17:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:17:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 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 171 [2024-10-24 01:17:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:17:42,783 INFO L225 Difference]: With dead ends: 165031 [2024-10-24 01:17:42,783 INFO L226 Difference]: Without dead ends: 119710 [2024-10-24 01:17:42,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:17:42,920 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 1639 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 3973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 01:17:42,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 2190 Invalid, 3973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3904 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 01:17:42,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119710 states. [2024-10-24 01:17:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119710 to 90525. [2024-10-24 01:17:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90525 states, 83065 states have (on average 1.6225245289833263) internal successors, (134775), 83323 states have internal predecessors, (134775), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2024-10-24 01:17:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90525 states to 90525 states and 152912 transitions. [2024-10-24 01:17:47,841 INFO L78 Accepts]: Start accepts. Automaton has 90525 states and 152912 transitions. Word has length 171 [2024-10-24 01:17:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:17:47,842 INFO L471 AbstractCegarLoop]: Abstraction has 90525 states and 152912 transitions. [2024-10-24 01:17:47,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:17:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 90525 states and 152912 transitions. [2024-10-24 01:17:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 01:17:47,893 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:17:47,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:17:47,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:17:47,894 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:17:47,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:17:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash -474459585, now seen corresponding path program 1 times [2024-10-24 01:17:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:17:47,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901012929] [2024-10-24 01:17:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:17:47,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:17:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:47,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:17:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:48,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 01:17:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:48,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 01:17:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:48,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 01:17:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:48,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-24 01:17:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:17:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:17:48,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:17:48,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901012929] [2024-10-24 01:17:48,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901012929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:17:48,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:17:48,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:17:48,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856613683] [2024-10-24 01:17:48,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:17:48,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:17:48,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:17:48,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:17:48,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:17:48,096 INFO L87 Difference]: Start difference. First operand 90525 states and 152912 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)