./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.04.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05d3b7d21cc48825b4a0189c75f03d768acc6241312029d3e223c1b9b2a509ea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:07:26,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:07:26,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:07:26,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:07:26,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:07:26,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:07:26,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:07:26,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:07:26,395 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:07:26,396 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:07:26,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:07:26,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:07:26,397 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:07:26,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:07:26,399 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:07:26,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:07:26,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:07:26,400 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:07:26,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:07:26,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:07:26,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:07:26,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:07:26,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:07:26,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:07:26,405 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:07:26,405 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:07:26,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:07:26,405 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:07:26,405 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:07:26,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:07:26,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:07:26,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:07:26,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:07:26,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:07:26,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:07:26,406 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:07:26,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:07:26,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:07:26,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:07:26,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:07:26,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:07:26,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:07:26,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05d3b7d21cc48825b4a0189c75f03d768acc6241312029d3e223c1b9b2a509ea [2024-11-16 08:07:26,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:07:26,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:07:26,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:07:26,624 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:07:26,625 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:07:26,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.04.cil-2.c [2024-11-16 08:07:27,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:07:27,993 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:07:27,994 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.04.cil-2.c [2024-11-16 08:07:28,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8ea4d633/bb827f13ddd34f3c8b428b6752e5bbec/FLAGa343be9a4 [2024-11-16 08:07:28,012 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8ea4d633/bb827f13ddd34f3c8b428b6752e5bbec [2024-11-16 08:07:28,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:07:28,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:07:28,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:07:28,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:07:28,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:07:28,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f292fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28, skipping insertion in model container [2024-11-16 08:07:28,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,047 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:07:28,184 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.04.cil-2.c[671,684] [2024-11-16 08:07:28,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:07:28,274 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:07:28,282 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.04.cil-2.c[671,684] [2024-11-16 08:07:28,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:07:28,325 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:07:28,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28 WrapperNode [2024-11-16 08:07:28,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:07:28,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:07:28,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:07:28,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:07:28,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,365 INFO L138 Inliner]: procedures = 36, calls = 44, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 398 [2024-11-16 08:07:28,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:07:28,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:07:28,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:07:28,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:07:28,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,376 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,391 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 08:07:28,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,400 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:07:28,406 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:07:28,406 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:07:28,406 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:07:28,406 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (1/1) ... [2024-11-16 08:07:28,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:07:28,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:07:28,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 08:07:28,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 08:07:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:07:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-16 08:07:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-16 08:07:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-16 08:07:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-16 08:07:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-16 08:07:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-16 08:07:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-16 08:07:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-16 08:07:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-16 08:07:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-16 08:07:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-16 08:07:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-16 08:07:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:07:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-16 08:07:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-16 08:07:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:07:28,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:07:28,551 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:07:28,553 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:07:28,961 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-16 08:07:28,962 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:07:28,978 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:07:28,978 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:07:28,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:07:28 BoogieIcfgContainer [2024-11-16 08:07:28,979 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:07:28,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:07:28,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:07:28,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:07:28,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:07:28" (1/3) ... [2024-11-16 08:07:28,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c078e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:07:28, skipping insertion in model container [2024-11-16 08:07:28,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:07:28" (2/3) ... [2024-11-16 08:07:28,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c078e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:07:28, skipping insertion in model container [2024-11-16 08:07:28,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:07:28" (3/3) ... [2024-11-16 08:07:28,987 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-2.c [2024-11-16 08:07:29,001 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:07:29,001 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:07:29,051 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:07:29,057 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;@27c47c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:07:29,058 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:07:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 194 states have (on average 1.5154639175257731) internal successors, (294), 198 states have internal predecessors, (294), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-16 08:07:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:29,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:29,073 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] [2024-11-16 08:07:29,074 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:29,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:29,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1912054095, now seen corresponding path program 1 times [2024-11-16 08:07:29,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:29,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036932407] [2024-11-16 08:07:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:29,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:29,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:29,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:29,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:29,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:29,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:29,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:29,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036932407] [2024-11-16 08:07:29,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036932407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:29,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:29,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:07:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256631989] [2024-11-16 08:07:29,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:29,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:07:29,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:29,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:07:29,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:07:29,603 INFO L87 Difference]: Start difference. First operand has 223 states, 194 states have (on average 1.5154639175257731) internal successors, (294), 198 states have internal predecessors, (294), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-16 08:07:30,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:30,732 INFO L93 Difference]: Finished difference Result 739 states and 1141 transitions. [2024-11-16 08:07:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 08:07:30,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:30,749 INFO L225 Difference]: With dead ends: 739 [2024-11-16 08:07:30,749 INFO L226 Difference]: Without dead ends: 518 [2024-11-16 08:07:30,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:07:30,760 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 693 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:30,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 815 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 08:07:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-16 08:07:30,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 408. [2024-11-16 08:07:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 361 states have (on average 1.4681440443213296) internal successors, (530), 364 states have internal predecessors, (530), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2024-11-16 08:07:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 597 transitions. [2024-11-16 08:07:30,825 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 597 transitions. Word has length 95 [2024-11-16 08:07:30,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:30,825 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 597 transitions. [2024-11-16 08:07:30,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-16 08:07:30,826 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 597 transitions. [2024-11-16 08:07:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:30,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:30,829 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] [2024-11-16 08:07:30,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:07:30,829 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:30,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:30,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1186351343, now seen corresponding path program 1 times [2024-11-16 08:07:30,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:30,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392406022] [2024-11-16 08:07:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:30,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:30,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:30,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:30,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:31,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:31,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:31,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:31,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392406022] [2024-11-16 08:07:31,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392406022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:31,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:31,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:07:31,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6937430] [2024-11-16 08:07:31,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:31,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:07:31,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:31,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:07:31,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:07:31,027 INFO L87 Difference]: Start difference. First operand 408 states and 597 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:32,286 INFO L93 Difference]: Finished difference Result 1169 states and 1740 transitions. [2024-11-16 08:07:32,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 08:07:32,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:32,294 INFO L225 Difference]: With dead ends: 1169 [2024-11-16 08:07:32,294 INFO L226 Difference]: Without dead ends: 773 [2024-11-16 08:07:32,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:07:32,298 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 685 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:32,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1495 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 08:07:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-11-16 08:07:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 595. [2024-11-16 08:07:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 528 states have (on average 1.4602272727272727) internal successors, (771), 532 states have internal predecessors, (771), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2024-11-16 08:07:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 866 transitions. [2024-11-16 08:07:32,342 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 866 transitions. Word has length 95 [2024-11-16 08:07:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:32,342 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 866 transitions. [2024-11-16 08:07:32,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 866 transitions. [2024-11-16 08:07:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:32,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:32,350 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] [2024-11-16 08:07:32,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:07:32,350 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:32,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:32,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1757602576, now seen corresponding path program 1 times [2024-11-16 08:07:32,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:32,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077510796] [2024-11-16 08:07:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:32,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:32,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:32,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:32,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:32,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:32,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:32,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:32,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077510796] [2024-11-16 08:07:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077510796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:32,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:32,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:07:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313906487] [2024-11-16 08:07:32,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:32,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:07:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:07:32,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:07:32,502 INFO L87 Difference]: Start difference. First operand 595 states and 866 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:33,700 INFO L93 Difference]: Finished difference Result 1837 states and 2727 transitions. [2024-11-16 08:07:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 08:07:33,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:33,706 INFO L225 Difference]: With dead ends: 1837 [2024-11-16 08:07:33,706 INFO L226 Difference]: Without dead ends: 1254 [2024-11-16 08:07:33,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:07:33,712 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 689 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:33,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1493 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 08:07:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2024-11-16 08:07:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 970. [2024-11-16 08:07:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 863 states have (on average 1.4530706836616454) internal successors, (1254), 869 states have internal predecessors, (1254), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2024-11-16 08:07:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1409 transitions. [2024-11-16 08:07:33,780 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1409 transitions. Word has length 95 [2024-11-16 08:07:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:33,781 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1409 transitions. [2024-11-16 08:07:33,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1409 transitions. [2024-11-16 08:07:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:33,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:33,784 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] [2024-11-16 08:07:33,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:07:33,784 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:33,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1637482703, now seen corresponding path program 1 times [2024-11-16 08:07:33,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:33,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909206184] [2024-11-16 08:07:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:33,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:33,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:33,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:33,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:33,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:33,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:33,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:33,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909206184] [2024-11-16 08:07:33,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909206184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:33,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:33,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:07:33,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011850183] [2024-11-16 08:07:33,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:33,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:07:33,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:07:33,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:07:33,908 INFO L87 Difference]: Start difference. First operand 970 states and 1409 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:35,120 INFO L93 Difference]: Finished difference Result 3129 states and 4630 transitions. [2024-11-16 08:07:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 08:07:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:35,131 INFO L225 Difference]: With dead ends: 3129 [2024-11-16 08:07:35,131 INFO L226 Difference]: Without dead ends: 2171 [2024-11-16 08:07:35,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:07:35,135 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 685 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:35,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1493 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 08:07:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2024-11-16 08:07:35,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1726. [2024-11-16 08:07:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1539 states have (on average 1.4489928525016245) internal successors, (2230), 1549 states have internal predecessors, (2230), 124 states have call successors, (124), 55 states have call predecessors, (124), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2024-11-16 08:07:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2511 transitions. [2024-11-16 08:07:35,253 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2511 transitions. Word has length 95 [2024-11-16 08:07:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:35,254 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2511 transitions. [2024-11-16 08:07:35,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2511 transitions. [2024-11-16 08:07:35,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:35,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:35,257 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] [2024-11-16 08:07:35,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:07:35,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:35,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:35,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1623949902, now seen corresponding path program 1 times [2024-11-16 08:07:35,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:35,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985180569] [2024-11-16 08:07:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:35,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:35,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:35,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:35,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:35,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:35,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:35,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:35,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985180569] [2024-11-16 08:07:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985180569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:35,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:35,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:07:35,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661743766] [2024-11-16 08:07:35,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:35,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:07:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:35,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:07:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:07:35,394 INFO L87 Difference]: Start difference. First operand 1726 states and 2511 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:36,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:36,902 INFO L93 Difference]: Finished difference Result 6243 states and 9240 transitions. [2024-11-16 08:07:36,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 08:07:36,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:36,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:36,917 INFO L225 Difference]: With dead ends: 6243 [2024-11-16 08:07:36,917 INFO L226 Difference]: Without dead ends: 4529 [2024-11-16 08:07:36,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 08:07:36,922 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 858 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:36,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1483 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 08:07:36,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2024-11-16 08:07:37,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 3219. [2024-11-16 08:07:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 2880 states have (on average 1.448611111111111) internal successors, (4172), 2898 states have internal predecessors, (4172), 220 states have call successors, (220), 103 states have call predecessors, (220), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2024-11-16 08:07:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 4707 transitions. [2024-11-16 08:07:37,073 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 4707 transitions. Word has length 95 [2024-11-16 08:07:37,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:37,074 INFO L471 AbstractCegarLoop]: Abstraction has 3219 states and 4707 transitions. [2024-11-16 08:07:37,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:37,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 4707 transitions. [2024-11-16 08:07:37,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:37,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:37,077 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] [2024-11-16 08:07:37,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:07:37,078 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:37,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:37,078 INFO L85 PathProgramCache]: Analyzing trace with hash -515134703, now seen corresponding path program 1 times [2024-11-16 08:07:37,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:37,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466322161] [2024-11-16 08:07:37,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:37,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:37,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:37,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:37,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:37,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:37,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:37,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:37,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466322161] [2024-11-16 08:07:37,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466322161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:37,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:37,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:07:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7316566] [2024-11-16 08:07:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:37,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:07:37,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:07:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:07:37,216 INFO L87 Difference]: Start difference. First operand 3219 states and 4707 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:37,815 INFO L93 Difference]: Finished difference Result 7201 states and 10712 transitions. [2024-11-16 08:07:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 08:07:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:37,831 INFO L225 Difference]: With dead ends: 7201 [2024-11-16 08:07:37,831 INFO L226 Difference]: Without dead ends: 3994 [2024-11-16 08:07:37,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:07:37,840 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 612 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:37,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 605 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 08:07:37,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2024-11-16 08:07:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3219. [2024-11-16 08:07:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 2880 states have (on average 1.4427083333333333) internal successors, (4155), 2898 states have internal predecessors, (4155), 220 states have call successors, (220), 103 states have call predecessors, (220), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2024-11-16 08:07:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 4690 transitions. [2024-11-16 08:07:37,996 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 4690 transitions. Word has length 95 [2024-11-16 08:07:37,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:37,997 INFO L471 AbstractCegarLoop]: Abstraction has 3219 states and 4690 transitions. [2024-11-16 08:07:37,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:37,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 4690 transitions. [2024-11-16 08:07:38,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:38,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:38,000 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] [2024-11-16 08:07:38,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:07:38,000 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:38,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:38,001 INFO L85 PathProgramCache]: Analyzing trace with hash 351917522, now seen corresponding path program 1 times [2024-11-16 08:07:38,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:38,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636429123] [2024-11-16 08:07:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:38,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:38,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:38,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:38,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:38,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:38,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:38,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:38,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636429123] [2024-11-16 08:07:38,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636429123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:38,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:38,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:07:38,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790491991] [2024-11-16 08:07:38,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:38,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:07:38,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:38,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:07:38,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:07:38,132 INFO L87 Difference]: Start difference. First operand 3219 states and 4690 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:39,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:39,328 INFO L93 Difference]: Finished difference Result 11460 states and 16922 transitions. [2024-11-16 08:07:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 08:07:39,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:39,359 INFO L225 Difference]: With dead ends: 11460 [2024-11-16 08:07:39,360 INFO L226 Difference]: Without dead ends: 8253 [2024-11-16 08:07:39,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 08:07:39,371 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 772 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:39,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1483 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 08:07:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8253 states. [2024-11-16 08:07:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8253 to 6213. [2024-11-16 08:07:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6213 states, 5578 states have (on average 1.442631767658659) internal successors, (8047), 5612 states have internal predecessors, (8047), 404 states have call successors, (404), 199 states have call predecessors, (404), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2024-11-16 08:07:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 9128 transitions. [2024-11-16 08:07:39,670 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 9128 transitions. Word has length 95 [2024-11-16 08:07:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:39,672 INFO L471 AbstractCegarLoop]: Abstraction has 6213 states and 9128 transitions. [2024-11-16 08:07:39,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 9128 transitions. [2024-11-16 08:07:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:39,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:39,678 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] [2024-11-16 08:07:39,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:07:39,680 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:39,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:39,680 INFO L85 PathProgramCache]: Analyzing trace with hash 795528945, now seen corresponding path program 1 times [2024-11-16 08:07:39,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:39,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804309729] [2024-11-16 08:07:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:39,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:39,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:39,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:39,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:39,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:39,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:39,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:39,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804309729] [2024-11-16 08:07:39,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804309729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:39,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:39,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:07:39,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590412305] [2024-11-16 08:07:39,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:39,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:07:39,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:39,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:07:39,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:07:39,823 INFO L87 Difference]: Start difference. First operand 6213 states and 9128 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:40,461 INFO L93 Difference]: Finished difference Result 13777 states and 20563 transitions. [2024-11-16 08:07:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 08:07:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:40,488 INFO L225 Difference]: With dead ends: 13777 [2024-11-16 08:07:40,488 INFO L226 Difference]: Without dead ends: 7576 [2024-11-16 08:07:40,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:07:40,502 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 597 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:40,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 606 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:07:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2024-11-16 08:07:40,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 6213. [2024-11-16 08:07:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6213 states, 5578 states have (on average 1.4367156686984581) internal successors, (8014), 5612 states have internal predecessors, (8014), 404 states have call successors, (404), 199 states have call predecessors, (404), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2024-11-16 08:07:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 9095 transitions. [2024-11-16 08:07:40,792 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 9095 transitions. Word has length 95 [2024-11-16 08:07:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:40,792 INFO L471 AbstractCegarLoop]: Abstraction has 6213 states and 9095 transitions. [2024-11-16 08:07:40,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 9095 transitions. [2024-11-16 08:07:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:40,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:40,799 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] [2024-11-16 08:07:40,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:07:40,799 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:40,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash -159992334, now seen corresponding path program 1 times [2024-11-16 08:07:40,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:40,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159085715] [2024-11-16 08:07:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:40,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:40,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:40,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:40,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:40,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:40,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:40,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159085715] [2024-11-16 08:07:40,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159085715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:40,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:40,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:07:40,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451502010] [2024-11-16 08:07:40,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:40,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:07:40,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:40,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:07:40,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:07:40,914 INFO L87 Difference]: Start difference. First operand 6213 states and 9095 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:42,489 INFO L93 Difference]: Finished difference Result 21330 states and 31562 transitions. [2024-11-16 08:07:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 08:07:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:42,536 INFO L225 Difference]: With dead ends: 21330 [2024-11-16 08:07:42,536 INFO L226 Difference]: Without dead ends: 15129 [2024-11-16 08:07:42,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 08:07:42,552 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 683 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:42,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1483 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 08:07:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15129 states. [2024-11-16 08:07:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15129 to 12215. [2024-11-16 08:07:43,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12215 states, 11004 states have (on average 1.4367502726281351) internal successors, (15810), 11070 states have internal predecessors, (15810), 756 states have call successors, (756), 391 states have call predecessors, (756), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2024-11-16 08:07:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12215 states to 12215 states and 18113 transitions. [2024-11-16 08:07:43,087 INFO L78 Accepts]: Start accepts. Automaton has 12215 states and 18113 transitions. Word has length 95 [2024-11-16 08:07:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:43,088 INFO L471 AbstractCegarLoop]: Abstraction has 12215 states and 18113 transitions. [2024-11-16 08:07:43,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-16 08:07:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 12215 states and 18113 transitions. [2024-11-16 08:07:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 08:07:43,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:43,098 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] [2024-11-16 08:07:43,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 08:07:43,099 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:43,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:43,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2025941713, now seen corresponding path program 1 times [2024-11-16 08:07:43,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:43,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813382267] [2024-11-16 08:07:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:43,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:43,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:43,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:43,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:43,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:43,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:07:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813382267] [2024-11-16 08:07:43,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813382267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:43,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:07:43,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:07:43,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937234024] [2024-11-16 08:07:43,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:43,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:07:43,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:43,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:07:43,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:07:43,183 INFO L87 Difference]: Start difference. First operand 12215 states and 18113 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-16 08:07:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:45,228 INFO L93 Difference]: Finished difference Result 40596 states and 60245 transitions. [2024-11-16 08:07:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 08:07:45,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 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 95 [2024-11-16 08:07:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:45,306 INFO L225 Difference]: With dead ends: 40596 [2024-11-16 08:07:45,306 INFO L226 Difference]: Without dead ends: 28394 [2024-11-16 08:07:45,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-16 08:07:45,333 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 893 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:45,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1068 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 08:07:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28394 states. [2024-11-16 08:07:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28394 to 23631. [2024-11-16 08:07:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23631 states, 21216 states have (on average 1.4191176470588236) internal successors, (30108), 21411 states have internal predecessors, (30108), 1506 states have call successors, (1506), 781 states have call predecessors, (1506), 908 states have return successors, (3027), 1502 states have call predecessors, (3027), 1504 states have call successors, (3027) [2024-11-16 08:07:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23631 states to 23631 states and 34641 transitions. [2024-11-16 08:07:46,318 INFO L78 Accepts]: Start accepts. Automaton has 23631 states and 34641 transitions. Word has length 95 [2024-11-16 08:07:46,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:46,319 INFO L471 AbstractCegarLoop]: Abstraction has 23631 states and 34641 transitions. [2024-11-16 08:07:46,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-16 08:07:46,319 INFO L276 IsEmpty]: Start isEmpty. Operand 23631 states and 34641 transitions. [2024-11-16 08:07:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-16 08:07:46,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:46,362 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:07:46,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:07:46,362 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:46,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1184858566, now seen corresponding path program 1 times [2024-11-16 08:07:46,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:46,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913321755] [2024-11-16 08:07:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:46,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-16 08:07:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 08:07:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-16 08:07:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 08:07:46,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:46,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913321755] [2024-11-16 08:07:46,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913321755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:07:46,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528247029] [2024-11-16 08:07:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:46,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:07:46,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:07:46,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:07:46,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 08:07:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:46,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 08:07:46,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:07:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 08:07:46,739 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 08:07:46,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528247029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:46,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:07:46,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 08:07:46,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337074933] [2024-11-16 08:07:46,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:46,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:07:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:07:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:07:46,741 INFO L87 Difference]: Start difference. First operand 23631 states and 34641 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:07:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:48,863 INFO L93 Difference]: Finished difference Result 70086 states and 103367 transitions. [2024-11-16 08:07:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:07:48,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 157 [2024-11-16 08:07:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:49,021 INFO L225 Difference]: With dead ends: 70086 [2024-11-16 08:07:49,021 INFO L226 Difference]: Without dead ends: 46468 [2024-11-16 08:07:49,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:07:49,074 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 252 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:49,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 572 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:07:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46468 states. [2024-11-16 08:07:51,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46468 to 45943. [2024-11-16 08:07:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45943 states, 41250 states have (on average 1.4215515151515152) internal successors, (58639), 41638 states have internal predecessors, (58639), 2876 states have call successors, (2876), 1561 states have call predecessors, (2876), 1816 states have return successors, (5857), 2807 states have call predecessors, (5857), 2874 states have call successors, (5857) [2024-11-16 08:07:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45943 states to 45943 states and 67372 transitions. [2024-11-16 08:07:51,213 INFO L78 Accepts]: Start accepts. Automaton has 45943 states and 67372 transitions. Word has length 157 [2024-11-16 08:07:51,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:07:51,214 INFO L471 AbstractCegarLoop]: Abstraction has 45943 states and 67372 transitions. [2024-11-16 08:07:51,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:07:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 45943 states and 67372 transitions. [2024-11-16 08:07:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-16 08:07:51,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:07:51,271 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:07:51,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 08:07:51,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 08:07:51,473 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:07:51,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:07:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash 857062604, now seen corresponding path program 1 times [2024-11-16 08:07:51,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:07:51,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579723389] [2024-11-16 08:07:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:51,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:07:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:07:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:07:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:07:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:07:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:07:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-16 08:07:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 08:07:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-16 08:07:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 08:07:51,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:07:51,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579723389] [2024-11-16 08:07:51,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579723389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:07:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224173995] [2024-11-16 08:07:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:07:51,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:07:51,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:07:51,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:07:51,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 08:07:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:07:51,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 08:07:51,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:07:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 08:07:51,746 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 08:07:51,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224173995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:07:51,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:07:51,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 08:07:51,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18068088] [2024-11-16 08:07:51,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:07:51,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:07:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:07:51,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:07:51,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:07:51,748 INFO L87 Difference]: Start difference. First operand 45943 states and 67372 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:07:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:07:55,761 INFO L93 Difference]: Finished difference Result 136626 states and 201620 transitions. [2024-11-16 08:07:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:07:55,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 157 [2024-11-16 08:07:55,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:07:56,031 INFO L225 Difference]: With dead ends: 136626 [2024-11-16 08:07:56,031 INFO L226 Difference]: Without dead ends: 90696 [2024-11-16 08:07:56,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:07:56,126 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 246 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:07:56,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 572 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:07:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90696 states. [2024-11-16 08:08:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90696 to 89651. [2024-11-16 08:08:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89651 states, 80404 states have (on average 1.4227774737575245) internal successors, (114397), 81178 states have internal predecessors, (114397), 5614 states have call successors, (5614), 3121 states have call predecessors, (5614), 3632 states have return successors, (11515), 5415 states have call predecessors, (11515), 5612 states have call successors, (11515) [2024-11-16 08:08:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89651 states to 89651 states and 131526 transitions. [2024-11-16 08:08:00,648 INFO L78 Accepts]: Start accepts. Automaton has 89651 states and 131526 transitions. Word has length 157 [2024-11-16 08:08:00,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:08:00,648 INFO L471 AbstractCegarLoop]: Abstraction has 89651 states and 131526 transitions. [2024-11-16 08:08:00,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:08:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 89651 states and 131526 transitions. [2024-11-16 08:08:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-16 08:08:00,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:08:00,734 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:08:00,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 08:08:00,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 08:08:00,935 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:08:00,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:08:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1467888722, now seen corresponding path program 1 times [2024-11-16 08:08:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:08:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081317448] [2024-11-16 08:08:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:08:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:08:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:00,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:08:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:01,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 08:08:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:01,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:08:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:01,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 08:08:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:01,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 08:08:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:01,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-16 08:08:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:01,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 08:08:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:01,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-16 08:08:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 08:08:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:08:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081317448] [2024-11-16 08:08:01,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081317448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:08:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563268951] [2024-11-16 08:08:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:08:01,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:08:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:08:01,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:08:01,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 08:08:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:08:01,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 08:08:01,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:08:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-16 08:08:01,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 08:08:01,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563268951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:08:01,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:08:01,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 08:08:01,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242476310] [2024-11-16 08:08:01,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:08:01,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:08:01,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:08:01,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:08:01,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:08:01,193 INFO L87 Difference]: Start difference. First operand 89651 states and 131526 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:08:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:08:09,088 INFO L93 Difference]: Finished difference Result 266574 states and 393560 transitions. [2024-11-16 08:08:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:08:09,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 157 [2024-11-16 08:08:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:08:09,833 INFO L225 Difference]: With dead ends: 266574 [2024-11-16 08:08:09,833 INFO L226 Difference]: Without dead ends: 176936 [2024-11-16 08:08:09,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:08:09,992 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 258 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:08:09,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 572 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:08:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176936 states.