./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.09.cil-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 16:08:10,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 16:08:10,936 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 16:08:10,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 16:08:10,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 16:08:10,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 16:08:10,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 16:08:10,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 16:08:10,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 16:08:10,971 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 16:08:10,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 16:08:10,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 16:08:10,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 16:08:10,973 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 16:08:10,973 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 16:08:10,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 16:08:10,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 16:08:10,974 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 16:08:10,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 16:08:10,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 16:08:10,974 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 16:08:10,974 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 16:08:10,975 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:08:10,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 16:08:10,975 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 16:08:10,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 16:08:10,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 16:08:10,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 16:08:10,976 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 16:08:10,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 16:08:10,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 16:08:10,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 16:08:10,976 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 [2025-02-05 16:08:11,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 16:08:11,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 16:08:11,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 16:08:11,260 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 16:08:11,261 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 16:08:11,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2025-02-05 16:08:12,623 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24960210f/32c737255a424252b1b8acb3f92848a5/FLAGedb9c6ae7 [2025-02-05 16:08:12,906 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 16:08:12,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2025-02-05 16:08:12,938 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24960210f/32c737255a424252b1b8acb3f92848a5/FLAGedb9c6ae7 [2025-02-05 16:08:13,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24960210f/32c737255a424252b1b8acb3f92848a5 [2025-02-05 16:08:13,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 16:08:13,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 16:08:13,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 16:08:13,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 16:08:13,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 16:08:13,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1ea205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13, skipping insertion in model container [2025-02-05 16:08:13,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,218 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 16:08:13,334 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2025-02-05 16:08:13,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:08:13,439 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 16:08:13,447 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2025-02-05 16:08:13,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:08:13,533 INFO L204 MainTranslator]: Completed translation [2025-02-05 16:08:13,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13 WrapperNode [2025-02-05 16:08:13,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 16:08:13,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 16:08:13,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 16:08:13,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 16:08:13,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,582 INFO L138 Inliner]: procedures = 46, calls = 59, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 669 [2025-02-05 16:08:13,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 16:08:13,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 16:08:13,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 16:08:13,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 16:08:13,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,630 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]. [2025-02-05 16:08:13,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,648 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 16:08:13,668 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 16:08:13,668 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 16:08:13,668 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 16:08:13,669 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (1/1) ... [2025-02-05 16:08:13,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:08:13,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:08:13,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 16:08:13,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 16:08:13,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 16:08:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-02-05 16:08:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-02-05 16:08:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 16:08:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 16:08:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 16:08:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 16:08:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-05 16:08:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-05 16:08:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 16:08:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 16:08:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 16:08:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 16:08:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 16:08:13,737 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 16:08:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 16:08:13,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 16:08:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 16:08:13,848 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 16:08:13,852 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 16:08:14,606 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2025-02-05 16:08:14,606 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 16:08:14,629 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 16:08:14,630 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 16:08:14,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:08:14 BoogieIcfgContainer [2025-02-05 16:08:14,631 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 16:08:14,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 16:08:14,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 16:08:14,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 16:08:14,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:08:13" (1/3) ... [2025-02-05 16:08:14,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee4fd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:08:14, skipping insertion in model container [2025-02-05 16:08:14,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:13" (2/3) ... [2025-02-05 16:08:14,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee4fd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:08:14, skipping insertion in model container [2025-02-05 16:08:14,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:08:14" (3/3) ... [2025-02-05 16:08:14,640 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-2.c [2025-02-05 16:08:14,654 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 16:08:14,657 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.09.cil-2.c that has 8 procedures, 335 locations, 1 initial locations, 12 loop locations, and 1 error locations. [2025-02-05 16:08:14,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 16:08:14,725 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;@7ebb51f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 16:08:14,726 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 16:08:14,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 301 states have (on average 1.5747508305647842) internal successors, (474), 305 states have internal predecessors, (474), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-05 16:08:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:14,745 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:14,746 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:14,747 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:14,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:14,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1303079560, now seen corresponding path program 1 times [2025-02-05 16:08:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:14,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806306246] [2025-02-05 16:08:14,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:14,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:14,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:14,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:14,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:14,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:15,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:15,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806306246] [2025-02-05 16:08:15,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806306246] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:15,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:15,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:08:15,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292037314] [2025-02-05 16:08:15,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:15,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:08:15,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:15,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:08:15,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:08:15,390 INFO L87 Difference]: Start difference. First operand has 335 states, 301 states have (on average 1.5747508305647842) internal successors, (474), 305 states have internal predecessors, (474), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:16,135 INFO L93 Difference]: Finished difference Result 1003 states and 1586 transitions. [2025-02-05 16:08:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:08:16,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2025-02-05 16:08:16,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:16,150 INFO L225 Difference]: With dead ends: 1003 [2025-02-05 16:08:16,151 INFO L226 Difference]: Without dead ends: 677 [2025-02-05 16:08:16,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:16,163 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 935 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:16,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1442 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:16,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2025-02-05 16:08:16,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 652. [2025-02-05 16:08:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 595 states have (on average 1.5445378151260505) internal successors, (919), 598 states have internal predecessors, (919), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2025-02-05 16:08:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1004 transitions. [2025-02-05 16:08:16,253 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1004 transitions. Word has length 145 [2025-02-05 16:08:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:16,254 INFO L471 AbstractCegarLoop]: Abstraction has 652 states and 1004 transitions. [2025-02-05 16:08:16,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1004 transitions. [2025-02-05 16:08:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:16,257 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:16,257 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:16,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 16:08:16,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:16,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:16,258 INFO L85 PathProgramCache]: Analyzing trace with hash -56328714, now seen corresponding path program 1 times [2025-02-05 16:08:16,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:16,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232683596] [2025-02-05 16:08:16,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:16,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:16,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:16,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:16,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:16,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:16,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:16,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232683596] [2025-02-05 16:08:16,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232683596] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:16,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:16,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:16,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955512987] [2025-02-05 16:08:16,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:16,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:16,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:16,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:16,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:16,601 INFO L87 Difference]: Start difference. First operand 652 states and 1004 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:17,391 INFO L93 Difference]: Finished difference Result 1694 states and 2637 transitions. [2025-02-05 16:08:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:17,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2025-02-05 16:08:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:17,399 INFO L225 Difference]: With dead ends: 1694 [2025-02-05 16:08:17,400 INFO L226 Difference]: Without dead ends: 1059 [2025-02-05 16:08:17,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:17,403 INFO L435 NwaCegarLoop]: 676 mSDtfsCounter, 934 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:17,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 2752 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 16:08:17,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2025-02-05 16:08:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 954. [2025-02-05 16:08:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 872 states have (on average 1.536697247706422) internal successors, (1340), 876 states have internal predecessors, (1340), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (63), 60 states have call predecessors, (63), 59 states have call successors, (63) [2025-02-05 16:08:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1464 transitions. [2025-02-05 16:08:17,452 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1464 transitions. Word has length 145 [2025-02-05 16:08:17,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:17,452 INFO L471 AbstractCegarLoop]: Abstraction has 954 states and 1464 transitions. [2025-02-05 16:08:17,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1464 transitions. [2025-02-05 16:08:17,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:17,456 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:17,456 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:17,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 16:08:17,457 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:17,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1737856631, now seen corresponding path program 1 times [2025-02-05 16:08:17,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:17,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505908286] [2025-02-05 16:08:17,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:17,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:17,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:17,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:17,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:17,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:17,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505908286] [2025-02-05 16:08:17,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505908286] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:17,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:17,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063316329] [2025-02-05 16:08:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:17,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:17,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:17,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:17,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:17,703 INFO L87 Difference]: Start difference. First operand 954 states and 1464 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:18,481 INFO L93 Difference]: Finished difference Result 2652 states and 4120 transitions. [2025-02-05 16:08:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:18,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2025-02-05 16:08:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:18,496 INFO L225 Difference]: With dead ends: 2652 [2025-02-05 16:08:18,496 INFO L226 Difference]: Without dead ends: 1715 [2025-02-05 16:08:18,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:18,502 INFO L435 NwaCegarLoop]: 672 mSDtfsCounter, 929 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:18,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 2736 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 16:08:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2025-02-05 16:08:18,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1595. [2025-02-05 16:08:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1461 states have (on average 1.539356605065024) internal successors, (2249), 1469 states have internal predecessors, (2249), 97 states have call successors, (97), 31 states have call predecessors, (97), 36 states have return successors, (111), 98 states have call predecessors, (111), 95 states have call successors, (111) [2025-02-05 16:08:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2457 transitions. [2025-02-05 16:08:18,603 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2457 transitions. Word has length 145 [2025-02-05 16:08:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:18,605 INFO L471 AbstractCegarLoop]: Abstraction has 1595 states and 2457 transitions. [2025-02-05 16:08:18,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2457 transitions. [2025-02-05 16:08:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:18,608 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:18,608 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:18,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 16:08:18,608 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:18,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2083591722, now seen corresponding path program 1 times [2025-02-05 16:08:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:18,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11304670] [2025-02-05 16:08:18,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:18,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:18,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:18,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:18,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:18,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:18,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11304670] [2025-02-05 16:08:18,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11304670] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:18,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:18,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:18,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691101338] [2025-02-05 16:08:18,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:18,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:18,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:18,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:18,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:18,818 INFO L87 Difference]: Start difference. First operand 1595 states and 2457 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:19,603 INFO L93 Difference]: Finished difference Result 4711 states and 7375 transitions. [2025-02-05 16:08:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:19,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2025-02-05 16:08:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:19,623 INFO L225 Difference]: With dead ends: 4711 [2025-02-05 16:08:19,624 INFO L226 Difference]: Without dead ends: 3133 [2025-02-05 16:08:19,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:19,630 INFO L435 NwaCegarLoop]: 669 mSDtfsCounter, 924 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:19,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 2724 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:19,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2025-02-05 16:08:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 2982. [2025-02-05 16:08:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2738 states have (on average 1.5547845142439738) internal successors, (4257), 2760 states have internal predecessors, (4257), 169 states have call successors, (169), 55 states have call predecessors, (169), 74 states have return successors, (231), 174 states have call predecessors, (231), 167 states have call successors, (231) [2025-02-05 16:08:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 4657 transitions. [2025-02-05 16:08:19,794 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 4657 transitions. Word has length 145 [2025-02-05 16:08:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:19,794 INFO L471 AbstractCegarLoop]: Abstraction has 2982 states and 4657 transitions. [2025-02-05 16:08:19,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 4657 transitions. [2025-02-05 16:08:19,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:19,797 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:19,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:19,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 16:08:19,798 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:19,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:19,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1652674921, now seen corresponding path program 1 times [2025-02-05 16:08:19,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:19,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091093630] [2025-02-05 16:08:19,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:19,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:19,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:19,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:19,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:19,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:19,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:19,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091093630] [2025-02-05 16:08:19,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091093630] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:19,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:19,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:19,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790453406] [2025-02-05 16:08:19,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:19,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:19,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:19,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:19,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:19,987 INFO L87 Difference]: Start difference. First operand 2982 states and 4657 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:20,898 INFO L93 Difference]: Finished difference Result 9230 states and 14729 transitions. [2025-02-05 16:08:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:20,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2025-02-05 16:08:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:20,931 INFO L225 Difference]: With dead ends: 9230 [2025-02-05 16:08:20,932 INFO L226 Difference]: Without dead ends: 6265 [2025-02-05 16:08:20,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:20,943 INFO L435 NwaCegarLoop]: 666 mSDtfsCounter, 919 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:20,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 2712 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6265 states. [2025-02-05 16:08:21,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6265 to 6053. [2025-02-05 16:08:21,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6053 states, 5571 states have (on average 1.581224196733082) internal successors, (8809), 5639 states have internal predecessors, (8809), 313 states have call successors, (313), 103 states have call predecessors, (313), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2025-02-05 16:08:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6053 states to 6053 states and 9689 transitions. [2025-02-05 16:08:21,225 INFO L78 Accepts]: Start accepts. Automaton has 6053 states and 9689 transitions. Word has length 145 [2025-02-05 16:08:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:21,226 INFO L471 AbstractCegarLoop]: Abstraction has 6053 states and 9689 transitions. [2025-02-05 16:08:21,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 6053 states and 9689 transitions. [2025-02-05 16:08:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:21,237 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:21,237 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:21,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 16:08:21,237 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:21,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash -530395722, now seen corresponding path program 1 times [2025-02-05 16:08:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:21,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523495256] [2025-02-05 16:08:21,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:21,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:21,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:21,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:21,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:21,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:21,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523495256] [2025-02-05 16:08:21,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523495256] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:21,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:21,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:21,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518036056] [2025-02-05 16:08:21,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:21,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:21,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:21,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:21,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:21,413 INFO L87 Difference]: Start difference. First operand 6053 states and 9689 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:22,454 INFO L93 Difference]: Finished difference Result 19397 states and 31947 transitions. [2025-02-05 16:08:22,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2025-02-05 16:08:22,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:22,547 INFO L225 Difference]: With dead ends: 19397 [2025-02-05 16:08:22,547 INFO L226 Difference]: Without dead ends: 13361 [2025-02-05 16:08:22,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:22,573 INFO L435 NwaCegarLoop]: 663 mSDtfsCounter, 914 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:22,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2700 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:22,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13361 states. [2025-02-05 16:08:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13361 to 13032. [2025-02-05 16:08:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13032 states, 12020 states have (on average 1.6153910149750417) internal successors, (19417), 12234 states have internal predecessors, (19417), 601 states have call successors, (601), 199 states have call predecessors, (601), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-02-05 16:08:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13032 states to 13032 states and 21641 transitions. [2025-02-05 16:08:23,235 INFO L78 Accepts]: Start accepts. Automaton has 13032 states and 21641 transitions. Word has length 145 [2025-02-05 16:08:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:23,235 INFO L471 AbstractCegarLoop]: Abstraction has 13032 states and 21641 transitions. [2025-02-05 16:08:23,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:23,236 INFO L276 IsEmpty]: Start isEmpty. Operand 13032 states and 21641 transitions. [2025-02-05 16:08:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:23,244 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:23,245 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:23,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 16:08:23,245 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:23,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:23,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1861111479, now seen corresponding path program 1 times [2025-02-05 16:08:23,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:23,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387354204] [2025-02-05 16:08:23,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:23,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:23,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:23,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:23,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:23,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:23,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:23,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387354204] [2025-02-05 16:08:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387354204] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:23,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:23,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:23,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908376472] [2025-02-05 16:08:23,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:23,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:23,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:23,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:23,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:23,397 INFO L87 Difference]: Start difference. First operand 13032 states and 21641 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:24,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:24,929 INFO L93 Difference]: Finished difference Result 42904 states and 73977 transitions. [2025-02-05 16:08:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:24,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2025-02-05 16:08:24,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:25,117 INFO L225 Difference]: With dead ends: 42904 [2025-02-05 16:08:25,117 INFO L226 Difference]: Without dead ends: 29889 [2025-02-05 16:08:25,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:25,245 INFO L435 NwaCegarLoop]: 660 mSDtfsCounter, 909 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:25,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 2688 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 16:08:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29889 states. [2025-02-05 16:08:26,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29889 to 29339. [2025-02-05 16:08:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29339 states, 27105 states have (on average 1.653901494189264) internal successors, (44829), 27773 states have internal predecessors, (44829), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 1056 states have return successors, (5271), 1238 states have call predecessors, (5271), 1175 states have call successors, (5271) [2025-02-05 16:08:26,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29339 states to 29339 states and 51277 transitions. [2025-02-05 16:08:26,495 INFO L78 Accepts]: Start accepts. Automaton has 29339 states and 51277 transitions. Word has length 145 [2025-02-05 16:08:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:26,495 INFO L471 AbstractCegarLoop]: Abstraction has 29339 states and 51277 transitions. [2025-02-05 16:08:26,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 29339 states and 51277 transitions. [2025-02-05 16:08:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:26,512 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:26,512 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:26,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 16:08:26,512 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:26,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash -832689770, now seen corresponding path program 1 times [2025-02-05 16:08:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750824880] [2025-02-05 16:08:26,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:26,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:26,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:26,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:26,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:26,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:26,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750824880] [2025-02-05 16:08:26,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750824880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:26,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:26,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:26,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172717993] [2025-02-05 16:08:26,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:26,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:26,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:26,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:26,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:26,663 INFO L87 Difference]: Start difference. First operand 29339 states and 51277 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:29,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:29,222 INFO L93 Difference]: Finished difference Result 98799 states and 181487 transitions. [2025-02-05 16:08:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:29,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2025-02-05 16:08:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:29,593 INFO L225 Difference]: With dead ends: 98799 [2025-02-05 16:08:29,595 INFO L226 Difference]: Without dead ends: 69477 [2025-02-05 16:08:29,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:29,693 INFO L435 NwaCegarLoop]: 657 mSDtfsCounter, 904 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:29,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 2676 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69477 states. [2025-02-05 16:08:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69477 to 68514. [2025-02-05 16:08:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68514 states, 63350 states have (on average 1.6935280189423836) internal successors, (107285), 65412 states have internal predecessors, (107285), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 2834 states have return successors, (18711), 2454 states have call predecessors, (18711), 2327 states have call successors, (18711) [2025-02-05 16:08:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68514 states to 68514 states and 128325 transitions. [2025-02-05 16:08:32,858 INFO L78 Accepts]: Start accepts. Automaton has 68514 states and 128325 transitions. Word has length 145 [2025-02-05 16:08:32,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:32,859 INFO L471 AbstractCegarLoop]: Abstraction has 68514 states and 128325 transitions. [2025-02-05 16:08:32,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 68514 states and 128325 transitions. [2025-02-05 16:08:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:32,885 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:32,885 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:32,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 16:08:32,886 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:32,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:32,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1473775913, now seen corresponding path program 1 times [2025-02-05 16:08:32,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:32,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575809045] [2025-02-05 16:08:32,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:32,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:32,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:32,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:32,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:32,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:33,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:33,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575809045] [2025-02-05 16:08:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575809045] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:33,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:33,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:33,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202815385] [2025-02-05 16:08:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:33,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:33,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:33,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:33,036 INFO L87 Difference]: Start difference. First operand 68514 states and 128325 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:37,658 INFO L93 Difference]: Finished difference Result 235314 states and 470749 transitions. [2025-02-05 16:08:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:37,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2025-02-05 16:08:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:38,709 INFO L225 Difference]: With dead ends: 235314 [2025-02-05 16:08:38,709 INFO L226 Difference]: Without dead ends: 166817 [2025-02-05 16:08:38,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:38,976 INFO L435 NwaCegarLoop]: 654 mSDtfsCounter, 899 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:38,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 2664 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 16:08:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166817 states. [2025-02-05 16:08:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166817 to 165089. [2025-02-05 16:08:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165089 states, 152607 states have (on average 1.731303282287182) internal successors, (264209), 158915 states have internal predecessors, (264209), 4633 states have call successors, (4633), 1543 states have call predecessors, (4633), 7848 states have return successors, (70167), 4886 states have call predecessors, (70167), 4631 states have call successors, (70167) [2025-02-05 16:08:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165089 states to 165089 states and 339009 transitions. [2025-02-05 16:08:47,251 INFO L78 Accepts]: Start accepts. Automaton has 165089 states and 339009 transitions. Word has length 145 [2025-02-05 16:08:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:47,252 INFO L471 AbstractCegarLoop]: Abstraction has 165089 states and 339009 transitions. [2025-02-05 16:08:47,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 165089 states and 339009 transitions. [2025-02-05 16:08:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 16:08:47,302 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:47,303 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:47,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 16:08:47,303 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:47,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash -247530122, now seen corresponding path program 1 times [2025-02-05 16:08:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:47,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606460290] [2025-02-05 16:08:47,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:47,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:47,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 16:08:47,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 16:08:47,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:47,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:47,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:47,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606460290] [2025-02-05 16:08:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606460290] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:47,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:47,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702602613] [2025-02-05 16:08:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:47,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:47,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:47,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:47,477 INFO L87 Difference]: Start difference. First operand 165089 states and 339009 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)