./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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.10.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9102a3dc168a1a089cfcbe45042daf88c4c5eebedf113fc0c98e676c1fbaab5b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:34:57,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:34:57,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:34:57,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:34:57,858 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:34:57,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:34:57,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:34:57,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:34:57,891 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:34:57,892 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:34:57,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:34:57,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:34:57,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:34:57,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:34:57,894 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:34:57,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:34:57,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:34:57,897 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:34:57,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:34:57,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:34:57,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:34:57,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:34:57,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:34:57,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:34:57,904 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:34:57,904 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:34:57,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:34:57,904 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:34:57,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:34:57,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:34:57,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:34:57,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:34:57,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:34:57,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:34:57,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:34:57,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:34:57,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:34:57,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:34:57,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:34:57,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:34:57,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:34:57,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:34:57,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9102a3dc168a1a089cfcbe45042daf88c4c5eebedf113fc0c98e676c1fbaab5b [2024-11-18 14:34:58,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:34:58,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:34:58,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:34:58,226 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:34:58,228 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:34:58,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2024-11-18 14:34:59,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:34:59,958 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:34:59,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2024-11-18 14:34:59,981 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79de87629/e7198522c30c40bd97ffc162047865b2/FLAGead1f5346 [2024-11-18 14:34:59,994 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79de87629/e7198522c30c40bd97ffc162047865b2 [2024-11-18 14:34:59,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:34:59,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:34:59,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:35:00,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:35:00,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:35:00,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:34:59" (1/1) ... [2024-11-18 14:35:00,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee1b2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00, skipping insertion in model container [2024-11-18 14:35:00,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:34:59" (1/1) ... [2024-11-18 14:35:00,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:35:00,261 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c[671,684] [2024-11-18 14:35:00,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:35:00,377 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:35:00,387 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c[671,684] [2024-11-18 14:35:00,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:35:00,497 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:35:00,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00 WrapperNode [2024-11-18 14:35:00,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:35:00,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:35:00,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:35:00,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:35:00,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,572 INFO L138 Inliner]: procedures = 48, calls = 62, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 765 [2024-11-18 14:35:00,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:35:00,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:35:00,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:35:00,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:35:00,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,615 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 14:35:00,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:35:00,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:35:00,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:35:00,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:35:00,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:35:00,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:35:00,707 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 14:35:00,714 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 14:35:00,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:35:00,769 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 14:35:00,770 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 14:35:00,770 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 14:35:00,770 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 14:35:00,770 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 14:35:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 14:35:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 14:35:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 14:35:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 14:35:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 14:35:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 14:35:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 14:35:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:35:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 14:35:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 14:35:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:35:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:35:00,911 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:35:00,913 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:35:01,856 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2024-11-18 14:35:01,857 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:35:01,885 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:35:01,888 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-18 14:35:01,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:35:01 BoogieIcfgContainer [2024-11-18 14:35:01,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:35:01,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:35:01,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:35:01,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:35:01,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:34:59" (1/3) ... [2024-11-18 14:35:01,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459cb54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:35:01, skipping insertion in model container [2024-11-18 14:35:01,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (2/3) ... [2024-11-18 14:35:01,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459cb54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:35:01, skipping insertion in model container [2024-11-18 14:35:01,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:35:01" (3/3) ... [2024-11-18 14:35:01,900 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-1.c [2024-11-18 14:35:01,920 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:35:01,921 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:35:02,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:35:02,006 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;@162584fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:35:02,006 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:35:02,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 316 states have (on average 1.639240506329114) internal successors, (518), 320 states have internal predecessors, (518), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 14:35:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:02,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:02,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:02,028 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:02,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1236979497, now seen corresponding path program 1 times [2024-11-18 14:35:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:02,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282991620] [2024-11-18 14:35:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:02,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:02,509 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 14:35:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282991620] [2024-11-18 14:35:02,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282991620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:02,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:02,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:35:02,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730289093] [2024-11-18 14:35:02,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:02,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:35:02,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:02,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:35:02,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:35:02,551 INFO L87 Difference]: Start difference. First operand has 351 states, 316 states have (on average 1.639240506329114) internal successors, (518), 320 states have internal predecessors, (518), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 14:35:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:02,657 INFO L93 Difference]: Finished difference Result 694 states and 1131 transitions. [2024-11-18 14:35:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:35:02,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 156 [2024-11-18 14:35:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:02,675 INFO L225 Difference]: With dead ends: 694 [2024-11-18 14:35:02,675 INFO L226 Difference]: Without dead ends: 345 [2024-11-18 14:35:02,680 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 14:35:02,684 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 534 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 538 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 14:35:02,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 538 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:35:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-18 14:35:02,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2024-11-18 14:35:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 312 states have (on average 1.5544871794871795) internal successors, (485), 314 states have internal predecessors, (485), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 14:35:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 535 transitions. [2024-11-18 14:35:02,754 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 535 transitions. Word has length 156 [2024-11-18 14:35:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:02,759 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 535 transitions. [2024-11-18 14:35:02,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 14:35:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 535 transitions. [2024-11-18 14:35:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:02,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:02,766 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:02,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:35:02,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:02,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash 851117095, now seen corresponding path program 1 times [2024-11-18 14:35:02,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:02,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157839244] [2024-11-18 14:35:02,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:02,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:02,961 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 14:35:02,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:02,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157839244] [2024-11-18 14:35:02,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157839244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:02,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:02,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:35:02,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417273669] [2024-11-18 14:35:02,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:02,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:35:02,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:02,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:35:02,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:35:02,969 INFO L87 Difference]: Start difference. First operand 345 states and 535 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 14:35:03,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:03,019 INFO L93 Difference]: Finished difference Result 676 states and 1047 transitions. [2024-11-18 14:35:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:35:03,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 156 [2024-11-18 14:35:03,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:03,024 INFO L225 Difference]: With dead ends: 676 [2024-11-18 14:35:03,027 INFO L226 Difference]: Without dead ends: 345 [2024-11-18 14:35:03,029 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 14:35:03,030 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 521 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 533 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 14:35:03,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 533 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:35:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-18 14:35:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2024-11-18 14:35:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 312 states have (on average 1.5512820512820513) internal successors, (484), 314 states have internal predecessors, (484), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 14:35:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 534 transitions. [2024-11-18 14:35:03,102 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 534 transitions. Word has length 156 [2024-11-18 14:35:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:03,103 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 534 transitions. [2024-11-18 14:35:03,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 14:35:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 534 transitions. [2024-11-18 14:35:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:03,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:03,106 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:03,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:35:03,106 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:03,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1007097637, now seen corresponding path program 1 times [2024-11-18 14:35:03,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:03,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516923933] [2024-11-18 14:35:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:03,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:03,388 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 14:35:03,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:03,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516923933] [2024-11-18 14:35:03,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516923933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:03,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:03,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:35:03,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180199808] [2024-11-18 14:35:03,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:03,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:35:03,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:35:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:35:03,393 INFO L87 Difference]: Start difference. First operand 345 states and 534 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:04,141 INFO L93 Difference]: Finished difference Result 1039 states and 1626 transitions. [2024-11-18 14:35:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:35:04,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-11-18 14:35:04,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:04,149 INFO L225 Difference]: With dead ends: 1039 [2024-11-18 14:35:04,150 INFO L226 Difference]: Without dead ends: 712 [2024-11-18 14:35:04,151 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 14:35:04,154 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 1005 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:04,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1488 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-11-18 14:35:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 685. [2024-11-18 14:35:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 626 states have (on average 1.5638977635782747) internal successors, (979), 629 states have internal predecessors, (979), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2024-11-18 14:35:04,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1068 transitions. [2024-11-18 14:35:04,201 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1068 transitions. Word has length 156 [2024-11-18 14:35:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:04,202 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1068 transitions. [2024-11-18 14:35:04,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1068 transitions. [2024-11-18 14:35:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:04,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:04,205 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:04,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:35:04,205 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:04,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1673132833, now seen corresponding path program 1 times [2024-11-18 14:35:04,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:04,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833254988] [2024-11-18 14:35:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:04,428 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 14:35:04,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:04,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833254988] [2024-11-18 14:35:04,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833254988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:04,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:04,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:04,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13225986] [2024-11-18 14:35:04,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:04,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:04,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:04,431 INFO L87 Difference]: Start difference. First operand 685 states and 1068 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:05,309 INFO L93 Difference]: Finished difference Result 1784 states and 2815 transitions. [2024-11-18 14:35:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-11-18 14:35:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:05,317 INFO L225 Difference]: With dead ends: 1784 [2024-11-18 14:35:05,317 INFO L226 Difference]: Without dead ends: 1117 [2024-11-18 14:35:05,320 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 14:35:05,321 INFO L432 NwaCegarLoop]: 711 mSDtfsCounter, 1010 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:05,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 2892 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 14:35:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2024-11-18 14:35:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1002. [2024-11-18 14:35:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 917 states have (on average 1.5572519083969465) internal successors, (1428), 921 states have internal predecessors, (1428), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (66), 63 states have call predecessors, (66), 62 states have call successors, (66) [2024-11-18 14:35:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1558 transitions. [2024-11-18 14:35:05,387 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1558 transitions. Word has length 156 [2024-11-18 14:35:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:05,387 INFO L471 AbstractCegarLoop]: Abstraction has 1002 states and 1558 transitions. [2024-11-18 14:35:05,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1558 transitions. [2024-11-18 14:35:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:05,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:05,390 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:05,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:35:05,391 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:05,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1222880861, now seen corresponding path program 1 times [2024-11-18 14:35:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:05,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396016287] [2024-11-18 14:35:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:05,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:05,598 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 14:35:05,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:05,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396016287] [2024-11-18 14:35:05,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396016287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:05,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:05,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552806613] [2024-11-18 14:35:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:05,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:05,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:05,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:05,603 INFO L87 Difference]: Start difference. First operand 1002 states and 1558 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:06,418 INFO L93 Difference]: Finished difference Result 2793 states and 4400 transitions. [2024-11-18 14:35:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:06,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-11-18 14:35:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:06,430 INFO L225 Difference]: With dead ends: 2793 [2024-11-18 14:35:06,431 INFO L226 Difference]: Without dead ends: 1809 [2024-11-18 14:35:06,435 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 14:35:06,436 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 1034 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:06,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 2007 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2024-11-18 14:35:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1677. [2024-11-18 14:35:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1538 states have (on average 1.5611183355006502) internal successors, (2401), 1546 states have internal predecessors, (2401), 102 states have call successors, (102), 31 states have call predecessors, (102), 36 states have return successors, (116), 103 states have call predecessors, (116), 100 states have call successors, (116) [2024-11-18 14:35:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2619 transitions. [2024-11-18 14:35:06,550 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2619 transitions. Word has length 156 [2024-11-18 14:35:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:06,550 INFO L471 AbstractCegarLoop]: Abstraction has 1677 states and 2619 transitions. [2024-11-18 14:35:06,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2619 transitions. [2024-11-18 14:35:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:06,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:06,553 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:06,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:35:06,554 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:06,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1454645985, now seen corresponding path program 1 times [2024-11-18 14:35:06,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:06,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579952246] [2024-11-18 14:35:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:06,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:06,724 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 14:35:06,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:06,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579952246] [2024-11-18 14:35:06,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579952246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:06,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:06,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:06,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170054054] [2024-11-18 14:35:06,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:06,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:06,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:06,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:06,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:06,727 INFO L87 Difference]: Start difference. First operand 1677 states and 2619 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:07,656 INFO L93 Difference]: Finished difference Result 4954 states and 7859 transitions. [2024-11-18 14:35:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:07,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-11-18 14:35:07,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:07,680 INFO L225 Difference]: With dead ends: 4954 [2024-11-18 14:35:07,680 INFO L226 Difference]: Without dead ends: 3295 [2024-11-18 14:35:07,687 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 14:35:07,688 INFO L432 NwaCegarLoop]: 700 mSDtfsCounter, 997 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:07,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 2850 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2024-11-18 14:35:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 3135. [2024-11-18 14:35:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 2882 states have (on average 1.5763358778625953) internal successors, (4543), 2904 states have internal predecessors, (4543), 178 states have call successors, (178), 55 states have call predecessors, (178), 74 states have return successors, (240), 183 states have call predecessors, (240), 176 states have call successors, (240) [2024-11-18 14:35:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 4961 transitions. [2024-11-18 14:35:07,863 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 4961 transitions. Word has length 156 [2024-11-18 14:35:07,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:07,864 INFO L471 AbstractCegarLoop]: Abstraction has 3135 states and 4961 transitions. [2024-11-18 14:35:07,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:07,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 4961 transitions. [2024-11-18 14:35:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:07,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:07,868 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:07,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:35:07,868 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:07,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1743465375, now seen corresponding path program 1 times [2024-11-18 14:35:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:07,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367953447] [2024-11-18 14:35:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:08,078 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 14:35:08,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367953447] [2024-11-18 14:35:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367953447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:08,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:08,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:08,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089848244] [2024-11-18 14:35:08,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:08,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:08,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:08,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:08,082 INFO L87 Difference]: Start difference. First operand 3135 states and 4961 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:09,065 INFO L93 Difference]: Finished difference Result 9708 states and 15683 transitions. [2024-11-18 14:35:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:09,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-11-18 14:35:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:09,106 INFO L225 Difference]: With dead ends: 9708 [2024-11-18 14:35:09,106 INFO L226 Difference]: Without dead ends: 6591 [2024-11-18 14:35:09,117 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 14:35:09,120 INFO L432 NwaCegarLoop]: 697 mSDtfsCounter, 992 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:09,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 2838 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2024-11-18 14:35:09,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6366. [2024-11-18 14:35:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6366 states, 5867 states have (on average 1.6020112493608318) internal successors, (9399), 5935 states have internal predecessors, (9399), 330 states have call successors, (330), 103 states have call predecessors, (330), 168 states have return successors, (584), 343 states have call predecessors, (584), 328 states have call successors, (584) [2024-11-18 14:35:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 10313 transitions. [2024-11-18 14:35:09,533 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 10313 transitions. Word has length 156 [2024-11-18 14:35:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:09,533 INFO L471 AbstractCegarLoop]: Abstraction has 6366 states and 10313 transitions. [2024-11-18 14:35:09,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 10313 transitions. [2024-11-18 14:35:09,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:09,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:09,538 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:09,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:35:09,538 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:09,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:09,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1198592801, now seen corresponding path program 1 times [2024-11-18 14:35:09,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:09,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906647631] [2024-11-18 14:35:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:09,701 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 14:35:09,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:09,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906647631] [2024-11-18 14:35:09,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906647631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:09,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:09,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:09,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855332538] [2024-11-18 14:35:09,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:09,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:09,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:09,704 INFO L87 Difference]: Start difference. First operand 6366 states and 10313 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:10,945 INFO L93 Difference]: Finished difference Result 20417 states and 33985 transitions. [2024-11-18 14:35:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:10,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-11-18 14:35:10,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:11,044 INFO L225 Difference]: With dead ends: 20417 [2024-11-18 14:35:11,044 INFO L226 Difference]: Without dead ends: 14069 [2024-11-18 14:35:11,071 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 14:35:11,073 INFO L432 NwaCegarLoop]: 694 mSDtfsCounter, 987 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:11,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 2826 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14069 states. [2024-11-18 14:35:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14069 to 13719. [2024-11-18 14:35:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13719 states, 12674 states have (on average 1.635079690705381) internal successors, (20723), 12888 states have internal predecessors, (20723), 634 states have call successors, (634), 199 states have call predecessors, (634), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2024-11-18 14:35:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13719 states to 13719 states and 23013 transitions. [2024-11-18 14:35:11,903 INFO L78 Accepts]: Start accepts. Automaton has 13719 states and 23013 transitions. Word has length 156 [2024-11-18 14:35:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:11,903 INFO L471 AbstractCegarLoop]: Abstraction has 13719 states and 23013 transitions. [2024-11-18 14:35:11,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 13719 states and 23013 transitions. [2024-11-18 14:35:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:11,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:11,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:11,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:35:11,915 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:11,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1873752927, now seen corresponding path program 1 times [2024-11-18 14:35:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762654043] [2024-11-18 14:35:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:11,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:12,097 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 14:35:12,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:12,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762654043] [2024-11-18 14:35:12,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762654043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:12,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:12,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:12,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977909384] [2024-11-18 14:35:12,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:12,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:12,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:12,104 INFO L87 Difference]: Start difference. First operand 13719 states and 23013 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:13,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:13,866 INFO L93 Difference]: Finished difference Result 45224 states and 78615 transitions. [2024-11-18 14:35:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:13,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-11-18 14:35:13,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:14,076 INFO L225 Difference]: With dead ends: 45224 [2024-11-18 14:35:14,077 INFO L226 Difference]: Without dead ends: 31523 [2024-11-18 14:35:14,148 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 14:35:14,151 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 982 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:14,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 2814 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:14,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31523 states. [2024-11-18 14:35:16,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31523 to 30936. [2024-11-18 14:35:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30936 states, 28637 states have (on average 1.6723469637182666) internal successors, (47891), 29305 states have internal predecessors, (47891), 1242 states have call successors, (1242), 391 states have call predecessors, (1242), 1056 states have return successors, (5336), 1303 states have call predecessors, (5336), 1240 states have call successors, (5336) [2024-11-18 14:35:16,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30936 states to 30936 states and 54469 transitions. [2024-11-18 14:35:16,246 INFO L78 Accepts]: Start accepts. Automaton has 30936 states and 54469 transitions. Word has length 156 [2024-11-18 14:35:16,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:16,246 INFO L471 AbstractCegarLoop]: Abstraction has 30936 states and 54469 transitions. [2024-11-18 14:35:16,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 30936 states and 54469 transitions. [2024-11-18 14:35:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:16,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:16,263 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:16,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:35:16,263 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:16,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:16,264 INFO L85 PathProgramCache]: Analyzing trace with hash 925700961, now seen corresponding path program 1 times [2024-11-18 14:35:16,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:16,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569195787] [2024-11-18 14:35:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:16,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:16,399 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 14:35:16,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:16,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569195787] [2024-11-18 14:35:16,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569195787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:16,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:16,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:16,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789087430] [2024-11-18 14:35:16,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:16,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:16,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:16,402 INFO L87 Difference]: Start difference. First operand 30936 states and 54469 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:19,373 INFO L93 Difference]: Finished difference Result 104367 states and 192621 transitions. [2024-11-18 14:35:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:19,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-11-18 14:35:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:20,038 INFO L225 Difference]: With dead ends: 104367 [2024-11-18 14:35:20,038 INFO L226 Difference]: Without dead ends: 73449 [2024-11-18 14:35:20,177 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 14:35:20,178 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 977 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:20,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 2802 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:20,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73449 states. [2024-11-18 14:35:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73449 to 72417. [2024-11-18 14:35:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72417 states, 67124 states have (on average 1.7107293963411) internal successors, (114831), 69186 states have internal predecessors, (114831), 2458 states have call successors, (2458), 775 states have call predecessors, (2458), 2834 states have return successors, (18840), 2583 states have call predecessors, (18840), 2456 states have call successors, (18840) [2024-11-18 14:35:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72417 states to 72417 states and 136129 transitions. [2024-11-18 14:35:25,205 INFO L78 Accepts]: Start accepts. Automaton has 72417 states and 136129 transitions. Word has length 156 [2024-11-18 14:35:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:25,206 INFO L471 AbstractCegarLoop]: Abstraction has 72417 states and 136129 transitions. [2024-11-18 14:35:25,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 72417 states and 136129 transitions. [2024-11-18 14:35:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:25,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:25,234 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:25,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:35:25,235 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:25,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:25,236 INFO L85 PathProgramCache]: Analyzing trace with hash 340929311, now seen corresponding path program 1 times [2024-11-18 14:35:25,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:25,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273563594] [2024-11-18 14:35:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:25,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:25,486 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 14:35:25,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:25,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273563594] [2024-11-18 14:35:25,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273563594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:25,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:25,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:25,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912916473] [2024-11-18 14:35:25,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:25,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:25,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:25,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:25,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:25,490 INFO L87 Difference]: Start difference. First operand 72417 states and 136129 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:31,458 INFO L93 Difference]: Finished difference Result 249322 states and 498763 transitions. [2024-11-18 14:35:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:31,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-11-18 14:35:31,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:33,027 INFO L225 Difference]: With dead ends: 249322 [2024-11-18 14:35:33,027 INFO L226 Difference]: Without dead ends: 176923 [2024-11-18 14:35:33,237 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 14:35:33,238 INFO L432 NwaCegarLoop]: 685 mSDtfsCounter, 972 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:33,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 2790 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:33,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176923 states. [2024-11-18 14:35:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176923 to 175062. [2024-11-18 14:35:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175062 states, 162323 states have (on average 1.7473740628253545) internal successors, (283639), 168631 states have internal predecessors, (283639), 4890 states have call successors, (4890), 1543 states have call predecessors, (4890), 7848 states have return successors, (70424), 5143 states have call predecessors, (70424), 4888 states have call successors, (70424) [2024-11-18 14:35:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175062 states to 175062 states and 358953 transitions. [2024-11-18 14:35:44,306 INFO L78 Accepts]: Start accepts. Automaton has 175062 states and 358953 transitions. Word has length 156 [2024-11-18 14:35:44,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:44,307 INFO L471 AbstractCegarLoop]: Abstraction has 175062 states and 358953 transitions. [2024-11-18 14:35:44,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 175062 states and 358953 transitions. [2024-11-18 14:35:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:35:44,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:44,356 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:44,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:35:44,356 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:44,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash -93576287, now seen corresponding path program 1 times [2024-11-18 14:35:44,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:44,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349365999] [2024-11-18 14:35:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:44,500 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 14:35:44,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349365999] [2024-11-18 14:35:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349365999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:44,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:44,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:44,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313797732] [2024-11-18 14:35:44,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:44,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:44,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:44,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:44,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:44,503 INFO L87 Difference]: Start difference. First operand 175062 states and 358953 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)