./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32b030e5f1b46150870f8dd8e24821389f0ffe4175e43053767dc9109bffcf9b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:34:39,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:34:40,048 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:34:40,056 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:34:40,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:34:40,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:34:40,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:34:40,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:34:40,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:34:40,091 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:34:40,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:34:40,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:34:40,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:34:40,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:34:40,095 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:34:40,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:34:40,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:34:40,096 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:34:40,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:34:40,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:34:40,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:34:40,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:34:40,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:34:40,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:34:40,101 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:34:40,101 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:34:40,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:34:40,102 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:34:40,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:34:40,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:34:40,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:34:40,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:34:40,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:34:40,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:34:40,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:34:40,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:34:40,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:34:40,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:34:40,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:34:40,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:34:40,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:34:40,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:34:40,106 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32b030e5f1b46150870f8dd8e24821389f0ffe4175e43053767dc9109bffcf9b [2024-11-18 14:34:40,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:34:40,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:34:40,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:34:40,420 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:34:40,421 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:34:40,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.07.cil-2.c [2024-11-18 14:34:41,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:34:42,156 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:34:42,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-2.c [2024-11-18 14:34:42,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae3b143e/e20baa29f061400f9c6f78cdf382911a/FLAGd87512f75 [2024-11-18 14:34:42,195 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae3b143e/e20baa29f061400f9c6f78cdf382911a [2024-11-18 14:34:42,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:34:42,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:34:42,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:34:42,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:34:42,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:34:42,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d442be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42, skipping insertion in model container [2024-11-18 14:34:42,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:34:42,455 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.07.cil-2.c[671,684] [2024-11-18 14:34:42,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:34:42,598 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:34:42,610 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.07.cil-2.c[671,684] [2024-11-18 14:34:42,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:34:42,676 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:34:42,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42 WrapperNode [2024-11-18 14:34:42,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:34:42,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:34:42,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:34:42,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:34:42,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,751 INFO L138 Inliner]: procedures = 42, calls = 53, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 585 [2024-11-18 14:34:42,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:34:42,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:34:42,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:34:42,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:34:42,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,770 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,794 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:34:42,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:34:42,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:34:42,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:34:42,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:34:42,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (1/1) ... [2024-11-18 14:34:42,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:34:42,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:34:42,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:34:42,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:34:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:34:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 14:34:42,959 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 14:34:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 14:34:42,960 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 14:34:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 14:34:42,960 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 14:34:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 14:34:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 14:34:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 14:34:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 14:34:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 14:34:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 14:34:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:34:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 14:34:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 14:34:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:34:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:34:43,069 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:34:43,072 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:34:43,768 INFO L? ?]: Removed 71 outVars from TransFormulas that were not future-live. [2024-11-18 14:34:43,768 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:34:43,792 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:34:43,794 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-18 14:34:43,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:34:43 BoogieIcfgContainer [2024-11-18 14:34:43,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:34:43,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:34:43,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:34:43,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:34:43,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:34:42" (1/3) ... [2024-11-18 14:34:43,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617236cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:34:43, skipping insertion in model container [2024-11-18 14:34:43,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:42" (2/3) ... [2024-11-18 14:34:43,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617236cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:34:43, skipping insertion in model container [2024-11-18 14:34:43,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:34:43" (3/3) ... [2024-11-18 14:34:43,805 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-2.c [2024-11-18 14:34:43,821 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:34:43,822 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:34:43,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:34:43,902 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;@6faeb187, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:34:43,902 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:34:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 241 states have (on average 1.6265560165975104) internal successors, (392), 245 states have internal predecessors, (392), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-18 14:34:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:34:43,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:34:43,922 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:34:43,923 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:34:43,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:34:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1875957767, now seen corresponding path program 1 times [2024-11-18 14:34:43,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:34:43,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966988503] [2024-11-18 14:34:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:34:43,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:34:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:34:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:34:44,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:34:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966988503] [2024-11-18 14:34:44,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966988503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:34:44,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:34:44,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:34:44,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992117554] [2024-11-18 14:34:44,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:34:44,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:34:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:34:44,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:34:44,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:34:44,408 INFO L87 Difference]: Start difference. First operand has 273 states, 241 states have (on average 1.6265560165975104) internal successors, (392), 245 states have internal predecessors, (392), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:34:44,539 INFO L93 Difference]: Finished difference Result 536 states and 863 transitions. [2024-11-18 14:34:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:34:44,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2024-11-18 14:34:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:34:44,562 INFO L225 Difference]: With dead ends: 536 [2024-11-18 14:34:44,562 INFO L226 Difference]: Without dead ends: 267 [2024-11-18 14:34:44,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:34:44,576 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 406 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:34:44,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 412 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:34:44,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-18 14:34:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-11-18 14:34:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 237 states have (on average 1.540084388185654) internal successors, (365), 239 states have internal predecessors, (365), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 14:34:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 409 transitions. [2024-11-18 14:34:44,656 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 409 transitions. Word has length 123 [2024-11-18 14:34:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:34:44,658 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 409 transitions. [2024-11-18 14:34:44,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 409 transitions. [2024-11-18 14:34:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:34:44,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:34:44,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:34:44,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:34:44,663 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:34:44,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:34:44,664 INFO L85 PathProgramCache]: Analyzing trace with hash -125928503, now seen corresponding path program 1 times [2024-11-18 14:34:44,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:34:44,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847495281] [2024-11-18 14:34:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:34:44,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:34:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:34:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:34:44,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:34:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847495281] [2024-11-18 14:34:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847495281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:34:44,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:34:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:34:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232652551] [2024-11-18 14:34:44,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:34:44,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:34:44,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:34:45,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:34:45,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:34:45,001 INFO L87 Difference]: Start difference. First operand 267 states and 409 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:34:45,586 INFO L93 Difference]: Finished difference Result 799 states and 1237 transitions. [2024-11-18 14:34:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:34:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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 123 [2024-11-18 14:34:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:34:45,595 INFO L225 Difference]: With dead ends: 799 [2024-11-18 14:34:45,596 INFO L226 Difference]: Without dead ends: 547 [2024-11-18 14:34:45,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:34:45,600 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 748 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:34:45,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1131 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:34:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-18 14:34:45,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 526. [2024-11-18 14:34:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 473 states have (on average 1.5517970401691332) internal successors, (734), 476 states have internal predecessors, (734), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2024-11-18 14:34:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 811 transitions. [2024-11-18 14:34:45,649 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 811 transitions. Word has length 123 [2024-11-18 14:34:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:34:45,649 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 811 transitions. [2024-11-18 14:34:45,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 811 transitions. [2024-11-18 14:34:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:34:45,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:34:45,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:34:45,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:34:45,663 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:34:45,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:34:45,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1143576891, now seen corresponding path program 1 times [2024-11-18 14:34:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:34:45,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900541356] [2024-11-18 14:34:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:34:45,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:34:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:34:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:34:45,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:34:45,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900541356] [2024-11-18 14:34:45,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900541356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:34:45,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:34:45,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:34:45,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816090239] [2024-11-18 14:34:45,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:34:45,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:34:45,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:34:45,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:34:45,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:34:45,903 INFO L87 Difference]: Start difference. First operand 526 states and 811 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:34:46,633 INFO L93 Difference]: Finished difference Result 1359 states and 2116 transitions. [2024-11-18 14:34:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:34:46,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 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 123 [2024-11-18 14:34:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:34:46,641 INFO L225 Difference]: With dead ends: 1359 [2024-11-18 14:34:46,641 INFO L226 Difference]: Without dead ends: 848 [2024-11-18 14:34:46,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:34:46,646 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 744 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:34:46,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 2168 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:34:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-18 14:34:46,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 767. [2024-11-18 14:34:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 691 states have (on average 1.5441389290882779) internal successors, (1067), 695 states have internal predecessors, (1067), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (57), 54 states have call predecessors, (57), 53 states have call successors, (57) [2024-11-18 14:34:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1179 transitions. [2024-11-18 14:34:46,700 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1179 transitions. Word has length 123 [2024-11-18 14:34:46,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:34:46,701 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1179 transitions. [2024-11-18 14:34:46,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1179 transitions. [2024-11-18 14:34:46,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:34:46,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:34:46,707 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:34:46,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:34:46,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:34:46,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:34:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash 245717123, now seen corresponding path program 1 times [2024-11-18 14:34:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:34:46,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593166185] [2024-11-18 14:34:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:34:46,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:34:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:34:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:34:46,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:34:46,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593166185] [2024-11-18 14:34:46,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593166185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:34:46,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:34:46,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:34:46,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248365865] [2024-11-18 14:34:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:34:46,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:34:46,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:34:46,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:34:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:34:46,901 INFO L87 Difference]: Start difference. First operand 767 states and 1179 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:34:47,582 INFO L93 Difference]: Finished difference Result 2119 states and 3293 transitions. [2024-11-18 14:34:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:34:47,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 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 123 [2024-11-18 14:34:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:34:47,591 INFO L225 Difference]: With dead ends: 2119 [2024-11-18 14:34:47,591 INFO L226 Difference]: Without dead ends: 1367 [2024-11-18 14:34:47,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:34:47,594 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 739 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:34:47,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 2152 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:34:47,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2024-11-18 14:34:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1276. [2024-11-18 14:34:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1152 states have (on average 1.5451388888888888) internal successors, (1780), 1160 states have internal predecessors, (1780), 87 states have call successors, (87), 31 states have call predecessors, (87), 36 states have return successors, (101), 88 states have call predecessors, (101), 85 states have call successors, (101) [2024-11-18 14:34:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1968 transitions. [2024-11-18 14:34:47,666 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1968 transitions. Word has length 123 [2024-11-18 14:34:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:34:47,667 INFO L471 AbstractCegarLoop]: Abstraction has 1276 states and 1968 transitions. [2024-11-18 14:34:47,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1968 transitions. [2024-11-18 14:34:47,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:34:47,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:34:47,669 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:34:47,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:34:47,670 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:34:47,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:34:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1787676923, now seen corresponding path program 1 times [2024-11-18 14:34:47,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:34:47,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745039835] [2024-11-18 14:34:47,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:34:47,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:34:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:34:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:34:47,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:34:47,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745039835] [2024-11-18 14:34:47,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745039835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:34:47,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:34:47,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:34:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372597750] [2024-11-18 14:34:47,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:34:47,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:34:47,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:34:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:34:47,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:34:47,812 INFO L87 Difference]: Start difference. First operand 1276 states and 1968 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:34:48,543 INFO L93 Difference]: Finished difference Result 3742 states and 5856 transitions. [2024-11-18 14:34:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:34:48,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 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 123 [2024-11-18 14:34:48,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:34:48,559 INFO L225 Difference]: With dead ends: 3742 [2024-11-18 14:34:48,559 INFO L226 Difference]: Without dead ends: 2481 [2024-11-18 14:34:48,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:34:48,564 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 734 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:34:48,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 2140 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:34:48,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2024-11-18 14:34:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2369. [2024-11-18 14:34:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2369 states, 2143 states have (on average 1.5566962202519832) internal successors, (3336), 2165 states have internal predecessors, (3336), 151 states have call successors, (151), 55 states have call predecessors, (151), 74 states have return successors, (213), 156 states have call predecessors, (213), 149 states have call successors, (213) [2024-11-18 14:34:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 3700 transitions. [2024-11-18 14:34:48,677 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 3700 transitions. Word has length 123 [2024-11-18 14:34:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:34:48,678 INFO L471 AbstractCegarLoop]: Abstraction has 2369 states and 3700 transitions. [2024-11-18 14:34:48,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 3700 transitions. [2024-11-18 14:34:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:34:48,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:34:48,681 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:34:48,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:34:48,682 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:34:48,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:34:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash 640581699, now seen corresponding path program 1 times [2024-11-18 14:34:48,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:34:48,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550031429] [2024-11-18 14:34:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:34:48,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:34:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:34:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:34:48,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:34:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550031429] [2024-11-18 14:34:48,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550031429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:34:48,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:34:48,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:34:48,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107569298] [2024-11-18 14:34:48,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:34:48,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:34:48,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:34:48,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:34:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:34:48,868 INFO L87 Difference]: Start difference. First operand 2369 states and 3700 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:34:49,715 INFO L93 Difference]: Finished difference Result 7269 states and 11586 transitions. [2024-11-18 14:34:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:34:49,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 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 123 [2024-11-18 14:34:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:34:49,745 INFO L225 Difference]: With dead ends: 7269 [2024-11-18 14:34:49,745 INFO L226 Difference]: Without dead ends: 4915 [2024-11-18 14:34:49,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:34:49,756 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 729 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:34:49,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 2128 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:34:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2024-11-18 14:34:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4762. [2024-11-18 14:34:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 4314 states have (on average 1.5771905424200279) internal successors, (6804), 4382 states have internal predecessors, (6804), 279 states have call successors, (279), 103 states have call predecessors, (279), 168 states have return successors, (533), 292 states have call predecessors, (533), 277 states have call successors, (533) [2024-11-18 14:34:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 7616 transitions. [2024-11-18 14:34:50,049 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 7616 transitions. Word has length 123 [2024-11-18 14:34:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:34:50,049 INFO L471 AbstractCegarLoop]: Abstraction has 4762 states and 7616 transitions. [2024-11-18 14:34:50,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 7616 transitions. [2024-11-18 14:34:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:34:50,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:34:50,054 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:34:50,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:34:50,055 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:34:50,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:34:50,055 INFO L85 PathProgramCache]: Analyzing trace with hash -666560699, now seen corresponding path program 1 times [2024-11-18 14:34:50,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:34:50,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434976700] [2024-11-18 14:34:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:34:50,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:34:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:34:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:34:50,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:34:50,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434976700] [2024-11-18 14:34:50,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434976700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:34:50,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:34:50,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:34:50,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943355101] [2024-11-18 14:34:50,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:34:50,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:34:50,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:34:50,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:34:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:34:50,251 INFO L87 Difference]: Start difference. First operand 4762 states and 7616 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:34:51,158 INFO L93 Difference]: Finished difference Result 15092 states and 24836 transitions. [2024-11-18 14:34:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:34:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 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 123 [2024-11-18 14:34:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:34:51,225 INFO L225 Difference]: With dead ends: 15092 [2024-11-18 14:34:51,225 INFO L226 Difference]: Without dead ends: 10345 [2024-11-18 14:34:51,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:34:51,246 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 753 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:34:51,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1475 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:34:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10345 states. [2024-11-18 14:34:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10345 to 10115. [2024-11-18 14:34:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10115 states, 9169 states have (on average 1.603664521758098) internal successors, (14704), 9383 states have internal predecessors, (14704), 535 states have call successors, (535), 199 states have call predecessors, (535), 410 states have return successors, (1557), 564 states have call predecessors, (1557), 533 states have call successors, (1557) [2024-11-18 14:34:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10115 states to 10115 states and 16796 transitions. [2024-11-18 14:34:51,825 INFO L78 Accepts]: Start accepts. Automaton has 10115 states and 16796 transitions. Word has length 123 [2024-11-18 14:34:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:34:51,826 INFO L471 AbstractCegarLoop]: Abstraction has 10115 states and 16796 transitions. [2024-11-18 14:34:51,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 10115 states and 16796 transitions. [2024-11-18 14:34:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:34:51,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:34:51,834 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:34:51,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:34:51,834 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:34:51,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:34:51,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1230936067, now seen corresponding path program 1 times [2024-11-18 14:34:51,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:34:51,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477108898] [2024-11-18 14:34:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:34:51,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:34:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:34:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:34:52,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:34:52,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477108898] [2024-11-18 14:34:52,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477108898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:34:52,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:34:52,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:34:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903564115] [2024-11-18 14:34:52,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:34:52,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:34:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:34:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:34:52,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:34:52,015 INFO L87 Difference]: Start difference. First operand 10115 states and 16796 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:34:53,296 INFO L93 Difference]: Finished difference Result 32831 states and 56770 transitions. [2024-11-18 14:34:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:34:53,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 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 123 [2024-11-18 14:34:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:34:53,513 INFO L225 Difference]: With dead ends: 32831 [2024-11-18 14:34:53,513 INFO L226 Difference]: Without dead ends: 22731 [2024-11-18 14:34:53,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:34:53,559 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 719 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:34:53,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 2104 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:34:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22731 states. [2024-11-18 14:34:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22731 to 22360. [2024-11-18 14:34:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22360 states, 20256 states have (on average 1.6330963665086888) internal successors, (33080), 20924 states have internal predecessors, (33080), 1047 states have call successors, (1047), 391 states have call predecessors, (1047), 1056 states have return successors, (5141), 1108 states have call predecessors, (5141), 1045 states have call successors, (5141) [2024-11-18 14:34:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22360 states to 22360 states and 39268 transitions. [2024-11-18 14:34:55,022 INFO L78 Accepts]: Start accepts. Automaton has 22360 states and 39268 transitions. Word has length 123 [2024-11-18 14:34:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:34:55,023 INFO L471 AbstractCegarLoop]: Abstraction has 22360 states and 39268 transitions. [2024-11-18 14:34:55,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 22360 states and 39268 transitions. [2024-11-18 14:34:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:34:55,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:34:55,037 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:34:55,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:34:55,038 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:34:55,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:34:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2032990331, now seen corresponding path program 1 times [2024-11-18 14:34:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:34:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50778121] [2024-11-18 14:34:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:34:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:34:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:34:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:34:55,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:34:55,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50778121] [2024-11-18 14:34:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50778121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:34:55,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:34:55,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:34:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281279359] [2024-11-18 14:34:55,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:34:55,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:34:55,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:34:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:34:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:34:55,176 INFO L87 Difference]: Start difference. First operand 22360 states and 39268 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:34:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:34:57,317 INFO L93 Difference]: Finished difference Result 77406 states and 142857 transitions. [2024-11-18 14:34:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:34:57,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 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 123 [2024-11-18 14:34:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:34:57,678 INFO L225 Difference]: With dead ends: 77406 [2024-11-18 14:34:57,678 INFO L226 Difference]: Without dead ends: 55061 [2024-11-18 14:34:57,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:34:57,777 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 938 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:34:57,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 2079 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:34:57,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55061 states. [2024-11-18 14:35:00,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55061 to 50789. [2024-11-18 14:35:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50789 states, 45947 states have (on average 1.6644394628593815) internal successors, (76476), 48009 states have internal predecessors, (76476), 2007 states have call successors, (2007), 775 states have call predecessors, (2007), 2834 states have return successors, (18389), 2132 states have call predecessors, (18389), 2005 states have call successors, (18389) [2024-11-18 14:35:01,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50789 states to 50789 states and 96872 transitions. [2024-11-18 14:35:01,062 INFO L78 Accepts]: Start accepts. Automaton has 50789 states and 96872 transitions. Word has length 123 [2024-11-18 14:35:01,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:01,063 INFO L471 AbstractCegarLoop]: Abstraction has 50789 states and 96872 transitions. [2024-11-18 14:35:01,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:01,064 INFO L276 IsEmpty]: Start isEmpty. Operand 50789 states and 96872 transitions. [2024-11-18 14:35:01,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:35:01,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:01,086 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:01,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:35:01,086 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:01,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:01,087 INFO L85 PathProgramCache]: Analyzing trace with hash 355573699, now seen corresponding path program 1 times [2024-11-18 14:35:01,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:01,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051590727] [2024-11-18 14:35:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:01,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:01,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:01,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051590727] [2024-11-18 14:35:01,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051590727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:01,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:01,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:01,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455171566] [2024-11-18 14:35:01,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:01,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:01,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:01,210 INFO L87 Difference]: Start difference. First operand 50789 states and 96872 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:05,894 INFO L93 Difference]: Finished difference Result 173419 states and 356555 transitions. [2024-11-18 14:35:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:05,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 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 123 [2024-11-18 14:35:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:06,974 INFO L225 Difference]: With dead ends: 173419 [2024-11-18 14:35:06,974 INFO L226 Difference]: Without dead ends: 122645 [2024-11-18 14:35:07,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:35:07,168 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 870 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:07,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 2053 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 14:35:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122645 states. [2024-11-18 14:35:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122645 to 116203. [2024-11-18 14:35:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116203 states, 104491 states have (on average 1.6862504904728637) internal successors, (176198), 110799 states have internal predecessors, (176198), 3863 states have call successors, (3863), 1543 states have call predecessors, (3863), 7848 states have return successors, (69397), 4116 states have call predecessors, (69397), 3861 states have call successors, (69397) [2024-11-18 14:35:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116203 states to 116203 states and 249458 transitions. [2024-11-18 14:35:16,910 INFO L78 Accepts]: Start accepts. Automaton has 116203 states and 249458 transitions. Word has length 123 [2024-11-18 14:35:16,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:16,911 INFO L471 AbstractCegarLoop]: Abstraction has 116203 states and 249458 transitions. [2024-11-18 14:35:16,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:16,911 INFO L276 IsEmpty]: Start isEmpty. Operand 116203 states and 249458 transitions. [2024-11-18 14:35:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:35:16,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:16,962 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:16,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:35:16,963 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:16,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash -701157503, now seen corresponding path program 1 times [2024-11-18 14:35:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:16,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411195938] [2024-11-18 14:35:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:16,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:17,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:17,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411195938] [2024-11-18 14:35:17,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411195938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:17,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:17,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:35:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039445034] [2024-11-18 14:35:17,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:17,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:35:17,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:35:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:35:17,098 INFO L87 Difference]: Start difference. First operand 116203 states and 249458 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:24,203 INFO L93 Difference]: Finished difference Result 271769 states and 624011 transitions. [2024-11-18 14:35:24,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:35:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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 123 [2024-11-18 14:35:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:25,339 INFO L225 Difference]: With dead ends: 271769 [2024-11-18 14:35:25,339 INFO L226 Difference]: Without dead ends: 155581 [2024-11-18 14:35:25,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:25,620 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 527 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:25,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 756 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:35:25,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155581 states. [2024-11-18 14:35:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155581 to 116203. [2024-11-18 14:35:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116203 states, 104491 states have (on average 1.6837909485027418) internal successors, (175941), 110799 states have internal predecessors, (175941), 3863 states have call successors, (3863), 1543 states have call predecessors, (3863), 7848 states have return successors, (69397), 4116 states have call predecessors, (69397), 3861 states have call successors, (69397) [2024-11-18 14:35:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116203 states to 116203 states and 249201 transitions. [2024-11-18 14:35:37,566 INFO L78 Accepts]: Start accepts. Automaton has 116203 states and 249201 transitions. Word has length 123 [2024-11-18 14:35:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:37,567 INFO L471 AbstractCegarLoop]: Abstraction has 116203 states and 249201 transitions. [2024-11-18 14:35:37,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 116203 states and 249201 transitions. [2024-11-18 14:35:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 14:35:37,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:37,613 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:37,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:35:37,614 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:37,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash 650227715, now seen corresponding path program 1 times [2024-11-18 14:35:37,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:37,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260459239] [2024-11-18 14:35:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:37,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:37,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:37,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260459239] [2024-11-18 14:35:37,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260459239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:37,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:37,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:37,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245496725] [2024-11-18 14:35:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:37,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:37,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:37,740 INFO L87 Difference]: Start difference. First operand 116203 states and 249201 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 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)