./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.10.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9102a3dc168a1a089cfcbe45042daf88c4c5eebedf113fc0c98e676c1fbaab5b --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:44:17,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:44:17,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:44:17,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:44:17,770 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:44:17,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:44:17,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:44:17,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:44:17,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:44:17,786 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:44:17,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:44:17,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:44:17,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:44:17,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:44:17,787 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:44:17,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:44:17,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:44:17,787 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:44:17,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:44:17,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:44:17,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:44:17,788 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:44:17,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:44:17,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:44:17,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:44:17,790 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/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 -> 9102a3dc168a1a089cfcbe45042daf88c4c5eebedf113fc0c98e676c1fbaab5b [2025-03-03 14:44:18,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:44:18,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:44:18,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:44:18,022 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:44:18,022 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:44:18,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2025-03-03 14:44:19,187 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4634d2db6/8a46fa6e60c841d6b38321ab4cc5aaad/FLAG44aa17e95 [2025-03-03 14:44:19,407 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:44:19,407 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2025-03-03 14:44:19,421 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4634d2db6/8a46fa6e60c841d6b38321ab4cc5aaad/FLAG44aa17e95 [2025-03-03 14:44:19,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4634d2db6/8a46fa6e60c841d6b38321ab4cc5aaad [2025-03-03 14:44:19,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:44:19,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:44:19,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:44:19,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:44:19,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:44:19,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:44:19" (1/1) ... [2025-03-03 14:44:19,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8ff8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:19, skipping insertion in model container [2025-03-03 14:44:19,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:44:19" (1/1) ... [2025-03-03 14:44:19,787 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:44:19,897 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c[671,684] [2025-03-03 14:44:20,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:44:20,031 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:44:20,039 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c[671,684] [2025-03-03 14:44:20,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:44:20,124 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:44:20,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20 WrapperNode [2025-03-03 14:44:20,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:44:20,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:44:20,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:44:20,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:44:20,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,187 INFO L138 Inliner]: procedures = 48, calls = 62, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 726 [2025-03-03 14:44:20,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:44:20,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:44:20,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:44:20,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:44:20,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,210 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]. [2025-03-03 14:44:20,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,220 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:44:20,232 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:44:20,232 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:44:20,232 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:44:20,236 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (1/1) ... [2025-03-03 14:44:20,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:44:20,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:44:20,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 14:44:20,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 14:44:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:44:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-03 14:44:20,283 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-03 14:44:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-03 14:44:20,283 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-03 14:44:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-03 14:44:20,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-03 14:44:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-03 14:44:20,284 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-03 14:44:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-03 14:44:20,284 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-03 14:44:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-03 14:44:20,285 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-03 14:44:20,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:44:20,285 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-03 14:44:20,285 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-03 14:44:20,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:44:20,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:44:20,376 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:44:20,378 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:44:21,055 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2025-03-03 14:44:21,055 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:44:21,076 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:44:21,076 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:44:21,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:44:21 BoogieIcfgContainer [2025-03-03 14:44:21,077 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:44:21,079 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:44:21,079 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:44:21,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:44:21,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:44:19" (1/3) ... [2025-03-03 14:44:21,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a048fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:44:21, skipping insertion in model container [2025-03-03 14:44:21,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:20" (2/3) ... [2025-03-03 14:44:21,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a048fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:44:21, skipping insertion in model container [2025-03-03 14:44:21,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:44:21" (3/3) ... [2025-03-03 14:44:21,085 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-1.c [2025-03-03 14:44:21,095 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:44:21,096 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.10.cil-1.c that has 8 procedures, 362 locations, 1 initial locations, 13 loop locations, and 1 error locations. [2025-03-03 14:44:21,166 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:44:21,174 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;@3a305045, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:44:21,174 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:44:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 327 states have (on average 1.5779816513761469) internal successors, (516), 331 states have internal predecessors, (516), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-03 14:44:21,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:21,187 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:21,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:21,188 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:21,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:21,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1325772106, now seen corresponding path program 1 times [2025-03-03 14:44:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:21,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933560835] [2025-03-03 14:44:21,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:21,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:21,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:21,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:21,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:21,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:21,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933560835] [2025-03-03 14:44:21,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933560835] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:21,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:21,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 14:44:21,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270368749] [2025-03-03 14:44:21,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:21,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:44:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:21,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:44:21,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:44:21,662 INFO L87 Difference]: Start difference. First operand has 362 states, 327 states have (on average 1.5779816513761469) internal successors, (516), 331 states have internal predecessors, (516), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 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) [2025-03-03 14:44:22,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:22,331 INFO L93 Difference]: Finished difference Result 1086 states and 1722 transitions. [2025-03-03 14:44:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:44:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 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 156 [2025-03-03 14:44:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:22,355 INFO L225 Difference]: With dead ends: 1086 [2025-03-03 14:44:22,356 INFO L226 Difference]: Without dead ends: 734 [2025-03-03 14:44:22,365 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 [2025-03-03 14:44:22,367 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 1022 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:22,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1566 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 14:44:22,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2025-03-03 14:44:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 707. [2025-03-03 14:44:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 648 states have (on average 1.5478395061728396) internal successors, (1003), 651 states have internal predecessors, (1003), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2025-03-03 14:44:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1092 transitions. [2025-03-03 14:44:22,456 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1092 transitions. Word has length 156 [2025-03-03 14:44:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:22,457 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1092 transitions. [2025-03-03 14:44:22,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 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) [2025-03-03 14:44:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1092 transitions. [2025-03-03 14:44:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:22,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:22,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:22,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:44:22,462 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:22,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash -488693944, now seen corresponding path program 1 times [2025-03-03 14:44:22,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:22,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115937698] [2025-03-03 14:44:22,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:22,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:22,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:22,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:22,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:22,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:22,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:22,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115937698] [2025-03-03 14:44:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115937698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:22,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038903366] [2025-03-03 14:44:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:22,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:22,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:22,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:22,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:22,742 INFO L87 Difference]: Start difference. First operand 707 states and 1092 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:23,411 INFO L93 Difference]: Finished difference Result 1839 states and 2872 transitions. [2025-03-03 14:44:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2025-03-03 14:44:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:23,420 INFO L225 Difference]: With dead ends: 1839 [2025-03-03 14:44:23,420 INFO L226 Difference]: Without dead ends: 1150 [2025-03-03 14:44:23,429 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 [2025-03-03 14:44:23,431 INFO L435 NwaCegarLoop]: 735 mSDtfsCounter, 1023 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:23,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 2999 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 14:44:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2025-03-03 14:44:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1035. [2025-03-03 14:44:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 950 states have (on average 1.54) internal successors, (1463), 954 states have internal predecessors, (1463), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (66), 63 states have call predecessors, (66), 62 states have call successors, (66) [2025-03-03 14:44:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1593 transitions. [2025-03-03 14:44:23,466 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1593 transitions. Word has length 156 [2025-03-03 14:44:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:23,466 INFO L471 AbstractCegarLoop]: Abstraction has 1035 states and 1593 transitions. [2025-03-03 14:44:23,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1593 transitions. [2025-03-03 14:44:23,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:23,468 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:23,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:23,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 14:44:23,468 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:23,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1936700791, now seen corresponding path program 1 times [2025-03-03 14:44:23,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:23,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554734544] [2025-03-03 14:44:23,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:23,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:23,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:23,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:23,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:23,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:23,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:23,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554734544] [2025-03-03 14:44:23,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554734544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:23,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:23,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:23,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43539473] [2025-03-03 14:44:23,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:23,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:23,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:23,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:23,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:23,637 INFO L87 Difference]: Start difference. First operand 1035 states and 1593 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:24,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:24,277 INFO L93 Difference]: Finished difference Result 2881 states and 4490 transitions. [2025-03-03 14:44:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:24,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2025-03-03 14:44:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:24,287 INFO L225 Difference]: With dead ends: 2881 [2025-03-03 14:44:24,287 INFO L226 Difference]: Without dead ends: 1864 [2025-03-03 14:44:24,290 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 [2025-03-03 14:44:24,292 INFO L435 NwaCegarLoop]: 731 mSDtfsCounter, 1018 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:24,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 2983 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 14:44:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2025-03-03 14:44:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1732. [2025-03-03 14:44:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1593 states have (on average 1.5430006277463904) internal successors, (2458), 1601 states have internal predecessors, (2458), 102 states have call successors, (102), 31 states have call predecessors, (102), 36 states have return successors, (116), 103 states have call predecessors, (116), 100 states have call successors, (116) [2025-03-03 14:44:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2676 transitions. [2025-03-03 14:44:24,376 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2676 transitions. Word has length 156 [2025-03-03 14:44:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:24,377 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2676 transitions. [2025-03-03 14:44:24,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2676 transitions. [2025-03-03 14:44:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:24,381 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:24,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:24,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 14:44:24,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:24,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:24,382 INFO L85 PathProgramCache]: Analyzing trace with hash -597937368, now seen corresponding path program 1 times [2025-03-03 14:44:24,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:24,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86997124] [2025-03-03 14:44:24,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:24,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:24,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:24,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:24,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:24,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:24,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:24,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86997124] [2025-03-03 14:44:24,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86997124] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:24,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:24,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:24,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900047323] [2025-03-03 14:44:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:24,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:24,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:24,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:24,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:24,554 INFO L87 Difference]: Start difference. First operand 1732 states and 2676 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:25,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:25,183 INFO L93 Difference]: Finished difference Result 5124 states and 8047 transitions. [2025-03-03 14:44:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:25,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2025-03-03 14:44:25,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:25,200 INFO L225 Difference]: With dead ends: 5124 [2025-03-03 14:44:25,200 INFO L226 Difference]: Without dead ends: 3410 [2025-03-03 14:44:25,205 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 [2025-03-03 14:44:25,206 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 1044 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:25,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2062 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 14:44:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2025-03-03 14:44:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3243. [2025-03-03 14:44:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 2990 states have (on average 1.5591973244147157) internal successors, (4662), 3012 states have internal predecessors, (4662), 178 states have call successors, (178), 55 states have call predecessors, (178), 74 states have return successors, (240), 183 states have call predecessors, (240), 176 states have call successors, (240) [2025-03-03 14:44:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 5080 transitions. [2025-03-03 14:44:25,336 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 5080 transitions. Word has length 156 [2025-03-03 14:44:25,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:25,336 INFO L471 AbstractCegarLoop]: Abstraction has 3243 states and 5080 transitions. [2025-03-03 14:44:25,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 5080 transitions. [2025-03-03 14:44:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:25,338 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:25,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:25,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 14:44:25,339 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:25,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash -416204119, now seen corresponding path program 1 times [2025-03-03 14:44:25,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:25,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403371894] [2025-03-03 14:44:25,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:25,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:25,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:25,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:25,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:25,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403371894] [2025-03-03 14:44:25,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403371894] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:25,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:25,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:25,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533555680] [2025-03-03 14:44:25,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:25,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:25,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:25,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:25,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:25,468 INFO L87 Difference]: Start difference. First operand 3243 states and 5080 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:26,194 INFO L93 Difference]: Finished difference Result 10021 states and 16025 transitions. [2025-03-03 14:44:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2025-03-03 14:44:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:26,248 INFO L225 Difference]: With dead ends: 10021 [2025-03-03 14:44:26,248 INFO L226 Difference]: Without dead ends: 6796 [2025-03-03 14:44:26,257 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 [2025-03-03 14:44:26,259 INFO L435 NwaCegarLoop]: 721 mSDtfsCounter, 1005 mSDsluCounter, 2224 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:26,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 2945 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 14:44:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6796 states. [2025-03-03 14:44:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6796 to 6571. [2025-03-03 14:44:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6072 states have (on average 1.5849802371541502) internal successors, (9624), 6140 states have internal predecessors, (9624), 330 states have call successors, (330), 103 states have call predecessors, (330), 168 states have return successors, (584), 343 states have call predecessors, (584), 328 states have call successors, (584) [2025-03-03 14:44:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 10538 transitions. [2025-03-03 14:44:26,544 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 10538 transitions. Word has length 156 [2025-03-03 14:44:26,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:26,545 INFO L471 AbstractCegarLoop]: Abstraction has 6571 states and 10538 transitions. [2025-03-03 14:44:26,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 10538 transitions. [2025-03-03 14:44:26,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:26,555 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:26,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:26,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 14:44:26,555 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:26,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash -688640406, now seen corresponding path program 1 times [2025-03-03 14:44:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:26,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026864520] [2025-03-03 14:44:26,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:26,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:26,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:26,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:26,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:26,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:26,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026864520] [2025-03-03 14:44:26,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026864520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:26,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:26,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:26,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100989943] [2025-03-03 14:44:26,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:26,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:26,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:26,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:26,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:26,694 INFO L87 Difference]: Start difference. First operand 6571 states and 10538 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:27,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:27,554 INFO L93 Difference]: Finished difference Result 21021 states and 34645 transitions. [2025-03-03 14:44:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:27,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2025-03-03 14:44:27,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:27,629 INFO L225 Difference]: With dead ends: 21021 [2025-03-03 14:44:27,630 INFO L226 Difference]: Without dead ends: 14468 [2025-03-03 14:44:27,652 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 [2025-03-03 14:44:27,653 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 1000 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:27,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 2933 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 14:44:27,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14468 states. [2025-03-03 14:44:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14468 to 14118. [2025-03-03 14:44:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14118 states, 13073 states have (on average 1.6186032280272318) internal successors, (21160), 13287 states have internal predecessors, (21160), 634 states have call successors, (634), 199 states have call predecessors, (634), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2025-03-03 14:44:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14118 states to 14118 states and 23450 transitions. [2025-03-03 14:44:28,261 INFO L78 Accepts]: Start accepts. Automaton has 14118 states and 23450 transitions. Word has length 156 [2025-03-03 14:44:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:28,262 INFO L471 AbstractCegarLoop]: Abstraction has 14118 states and 23450 transitions. [2025-03-03 14:44:28,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:28,263 INFO L276 IsEmpty]: Start isEmpty. Operand 14118 states and 23450 transitions. [2025-03-03 14:44:28,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:28,270 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:28,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:28,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 14:44:28,271 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:28,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:28,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1796423305, now seen corresponding path program 1 times [2025-03-03 14:44:28,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:28,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205883371] [2025-03-03 14:44:28,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:28,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:28,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:28,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:28,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:28,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205883371] [2025-03-03 14:44:28,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205883371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:28,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:28,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:28,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245261058] [2025-03-03 14:44:28,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:28,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:28,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:28,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:28,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:28,397 INFO L87 Difference]: Start difference. First operand 14118 states and 23450 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:29,458 INFO L93 Difference]: Finished difference Result 46410 states and 79911 transitions. [2025-03-03 14:44:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:29,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2025-03-03 14:44:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:29,588 INFO L225 Difference]: With dead ends: 46410 [2025-03-03 14:44:29,588 INFO L226 Difference]: Without dead ends: 32310 [2025-03-03 14:44:29,639 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 [2025-03-03 14:44:29,640 INFO L435 NwaCegarLoop]: 715 mSDtfsCounter, 995 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:29,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 2921 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 14:44:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32310 states. [2025-03-03 14:44:30,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32310 to 31723. [2025-03-03 14:44:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31723 states, 29424 states have (on average 1.656878738444807) internal successors, (48752), 30092 states have internal predecessors, (48752), 1242 states have call successors, (1242), 391 states have call predecessors, (1242), 1056 states have return successors, (5336), 1303 states have call predecessors, (5336), 1240 states have call successors, (5336) [2025-03-03 14:44:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31723 states to 31723 states and 55330 transitions. [2025-03-03 14:44:30,884 INFO L78 Accepts]: Start accepts. Automaton has 31723 states and 55330 transitions. Word has length 156 [2025-03-03 14:44:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:30,884 INFO L471 AbstractCegarLoop]: Abstraction has 31723 states and 55330 transitions. [2025-03-03 14:44:30,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 31723 states and 55330 transitions. [2025-03-03 14:44:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:30,898 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:30,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:30,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 14:44:30,898 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:30,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1322397322, now seen corresponding path program 1 times [2025-03-03 14:44:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716706750] [2025-03-03 14:44:30,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:30,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:30,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:30,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:30,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:31,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:31,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716706750] [2025-03-03 14:44:31,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716706750] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:31,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:31,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:31,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911999989] [2025-03-03 14:44:31,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:31,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:31,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:31,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:31,023 INFO L87 Difference]: Start difference. First operand 31723 states and 55330 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:32,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:32,899 INFO L93 Difference]: Finished difference Result 106717 states and 195189 transitions. [2025-03-03 14:44:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:32,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2025-03-03 14:44:32,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:33,301 INFO L225 Difference]: With dead ends: 106717 [2025-03-03 14:44:33,302 INFO L226 Difference]: Without dead ends: 75012 [2025-03-03 14:44:33,428 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 [2025-03-03 14:44:33,429 INFO L435 NwaCegarLoop]: 712 mSDtfsCounter, 990 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:33,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 2909 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 14:44:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75012 states. [2025-03-03 14:44:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75012 to 73980. [2025-03-03 14:44:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73980 states, 68687 states have (on average 1.6966820504607858) internal successors, (116540), 70749 states have internal predecessors, (116540), 2458 states have call successors, (2458), 775 states have call predecessors, (2458), 2834 states have return successors, (18840), 2583 states have call predecessors, (18840), 2456 states have call successors, (18840) [2025-03-03 14:44:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73980 states to 73980 states and 137838 transitions. [2025-03-03 14:44:36,073 INFO L78 Accepts]: Start accepts. Automaton has 73980 states and 137838 transitions. Word has length 156 [2025-03-03 14:44:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:36,073 INFO L471 AbstractCegarLoop]: Abstraction has 73980 states and 137838 transitions. [2025-03-03 14:44:36,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 73980 states and 137838 transitions. [2025-03-03 14:44:36,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:36,095 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:36,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:36,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 14:44:36,096 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:36,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1030011497, now seen corresponding path program 1 times [2025-03-03 14:44:36,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:36,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358930193] [2025-03-03 14:44:36,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:36,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:36,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:36,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:36,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:36,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:36,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:36,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358930193] [2025-03-03 14:44:36,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358930193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:36,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:36,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:36,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711893549] [2025-03-03 14:44:36,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:36,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:36,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:36,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:36,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:36,207 INFO L87 Difference]: Start difference. First operand 73980 states and 137838 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:40,902 INFO L93 Difference]: Finished difference Result 254000 states and 503875 transitions. [2025-03-03 14:44:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2025-03-03 14:44:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:41,797 INFO L225 Difference]: With dead ends: 254000 [2025-03-03 14:44:41,798 INFO L226 Difference]: Without dead ends: 180038 [2025-03-03 14:44:42,088 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 [2025-03-03 14:44:42,088 INFO L435 NwaCegarLoop]: 709 mSDtfsCounter, 985 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:42,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 2897 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 14:44:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180038 states. [2025-03-03 14:44:48,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180038 to 178177. [2025-03-03 14:44:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178177 states, 165438 states have (on average 1.7350548241637351) internal successors, (287044), 171746 states have internal predecessors, (287044), 4890 states have call successors, (4890), 1543 states have call predecessors, (4890), 7848 states have return successors, (70424), 5143 states have call predecessors, (70424), 4888 states have call successors, (70424) [2025-03-03 14:44:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178177 states to 178177 states and 362358 transitions. [2025-03-03 14:44:49,619 INFO L78 Accepts]: Start accepts. Automaton has 178177 states and 362358 transitions. Word has length 156 [2025-03-03 14:44:49,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:49,620 INFO L471 AbstractCegarLoop]: Abstraction has 178177 states and 362358 transitions. [2025-03-03 14:44:49,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-03 14:44:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 178177 states and 362358 transitions. [2025-03-03 14:44:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:44:49,664 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:49,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:49,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 14:44:49,665 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:49,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1334724950, now seen corresponding path program 1 times [2025-03-03 14:44:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:49,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392078355] [2025-03-03 14:44:49,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:49,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:49,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:44:49,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:44:49,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:49,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:50,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:50,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392078355] [2025-03-03 14:44:50,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392078355] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:50,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:50,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 14:44:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776021480] [2025-03-03 14:44:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:50,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:44:50,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:50,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:44:50,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:44:50,103 INFO L87 Difference]: Start difference. First operand 178177 states and 362358 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 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)